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Programme & Abstracts

Photonics

Global

Conference @SINGAPORE

2012

13-16 December 2012

Resorts World Convention Centre Singapore


Programme & Abstract Book of 2012 Photonics Global Conference @ Singapore Proceedings CD ROM IEEE Catalog Number: CFP1227F-ART ISBN: 978-1-4673-2516-5 © 2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.


PGC2012

Programme & Abstracts 1

Table of Contents

I. Committee Members ……………………………………………………………………………… 2

II. General Information ……………………………………………………………………………….. 3

III. Conference Programme ………………………………………………………………………….. 7

i. Programme at-a-Glance ………………………………………………………………… 8

ii. Short Courses ………………………………………………………………………………….. 9

iii. Keynote Speakers ………………………………………………………………………… 10

iv. Workshops …………………………………………………………………………………… 11

v. Technical Programme ………………………………………………………………….. 13

vi. Abstracts ……………………………………………………………………………………… 46


PGC2012

2 Programme & Abstracts

I. Committee Members

Organizing Committee

Honorary Conference Chairs Chan Hin Kam, Tee Hiang Cheng

Advisors Yong Liang Guan, Geok Eng Ng

General Chairs Perry Shum, Swee Chuan Tjin

Programme Chairs Pita Kantisara, Kevin Xiao

Special Sessions Chairs Beng Koon Ng, Jason Png

Finance Chairs Feng Luan, Changyuan Yu

Exhibition Chairs Emily Hao, U. S. Dinish

Local Arrangement Chairs Michelle Shao, Qijie Wang

Publication Chairs Ying Huang, Seongwoo Yoo

Publicity Chairs Xiaohong Tang, Jing Zhang

International Advisory Committee

Vincent Chan, MIT, USA

Wood Hi Cheng, NSYSU, TAIWAN

T C Chong, SUTD, Singapore

James Coleman, UIUC, USA

Martijn de Sterke, Sydney Univ, Australia

Ajoy Ghatak, IIT Delhi, INDIA

Oliver Graydon, Nature Photonics, Japan

Kazuo Hotate,Tokyo Univ, Japan

Erich Ippen, MIT, USA

Gerd Keiser, PhotonicsComm, USA

Frank Levinson, SWG Incubator, Singapore

Richard Linke, IEEE Photonics Soc, USA

Charles Lieber, Harvard Univ, USA

Chinlon Lin, Lightel, USA

John Marsh, Glasgow Univ, UK

Malini Olivo, SBIC, Singapore

Alex Wai, HK PolyU, HK

Alan E. Willner,USC, USA

Bingkun Zhou, Tsinghua Univ, China


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II. General Information

Exhibition

Date: Friday, 14 December – Sunday, 16 December 2012

Time: 09:00 ~ 18:00

Venue: East Lobby, Level 1

All attendees are welcomed to visit the exhibition and build professional contacts.

Conference Banquet

Date: Saturday, 15 December 2012

Time: 19:00 ~ 21:00

Venue: Yunnan Garden Restaurant

One-North, NTU Alumni Club

11 Slim Barracks Rise, Level 3, Singapore 138664

Dress Code: Smart Casual

Transport will be provided from the conference venue to the banquet venue, please

check with the registration counter for schedule and pick up point. Conference banquet

is sponsored by Yangtze Optical Fibre and Cable Company Ltd.

IEEE Photonics Society Member Lounge Date: Friday, 14 December – Sunday, 16 December 2012

Time: 09:00 ~ 18:00

IEEE member lounge is open for all IEEE Photonics Society members. Drinks and snacks

are provided. IEEE Photonics Society Member Lounge is sponsored by DenseLight

Semiconductors Pte Ltd.

Mobile Access Web access to conference proceeding is a new feature this year. Delegates can access our

phone-friendly site to view full-length manuscript, receive daily announcement and various

features. Access the conference proceeding through http:/m.photonicsglobal.org/index.php.

QR code


PGC2012


Presentation Guideline

Instructions for Presenters

Speakers are requested to be in their respective session rooms at least 10 minutes prior to the

commencement of each session.

The duration of an invited presentation is 30 minutes. This includes 25 minutes for the presentation

itself and 5 minutes for Q&A. The duration of a regular presentation is 15 minutes. This includes 12

minutes for the presentation itself and 3 minutes for Q&A. We could appreciate if all presenters can

adhere strictly to this time limit.

Presentation must be carried out using Microsoft PowerPoint or PDF. No slide projectors will be

made available.

Speakers should bring their presentation materials in a thumb-drive and upload the files from 08:00--

08:30 daily or during the tea breaks or lunches.

Instructions for Session Chairs

We provide a small bell in every session room. Please ring a warning bell as follows

Invited talk: one ring at 20 minutes, two rings at 25minutes

Regular talk: one ring at 10 minutes, two rings at 12 minutes

It is a good idea to warn your presenters at the start of the session that you will be ringing this bell.

Please leave this bell in the room for the next chairperson.

Please remember the time frame. Keeping the Programme to time is very important. Please be aware of

the time periods (slots) speakers have been designated to present.

Poster Sessions Four Poster sessions will be held during 10:15-10:45 and 15:45-16:15 on 15 and 16 December at East

Lobby Level 1. At least one author should be present for each poster during the poster sessions.


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Beach Party

We will hold a beach party at the end of PGC 2012 at Bora Bora Beach Bar @ Sentosa (Palawan

Beach). All delegates are welcomed to join us. The beach party is organized by IEEE Photonics

Society Singapore Chapter Student Branch.

Date: Sunday, 16 December 2012

Time: 19:00 ~ 22:00

Venue: Bora Bora Beach Bar @ Sentosa

Dress Code: Casual

Barbeque food prepared by professional chefs will be served to attendees.

The map shows how to get to Bora Bora Beach Bar from the conference venue by public

transportation. You may also walk to the beach while enjoying the fantastic view in Sentosa. It‘s only

a 15-minite walk!


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Conference Venue Floor Plan

Opening Ceremony

Compass Ballroom, Basement 2

Technical Sessions

Function Rooms, Level 1

Exhibition & Poster


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III. Conference Programme

i. Programme At-a-Glance

ii. Short Courses

iii. Keynote Speakers

iv. Workshops

v. Technical Programme

vi. Abstract


Thur. 13 Dec

09:00-12:00 Short Course I: Basics of Optical Communications (conducted in Nanyang Technological University)

14:00-17:00 Short Course II: Fundamentals of Biophotonics (conducted in Nanyang Technological University)

Fri. 14 Dec

09:15-09:30 Opening Ceremony (Compass Ballroom, Resorts World Convention Centre)

09:30-10:15 Keynote Presentation I: “What Next for the Optical Internet?” David N. Payne (University of Southampton, UK) 10:15-10:45 Morning Tea Break

10:45-11:30 Keynote Presentation II: “From Metamaterials to Metadevices” Nikolay I. Zheludev (University of Southampton, UK)

11:30-13:15 Lunch Session

Room Pisces 1 Room Pisces 2 Room Pisces 3 Room Pisces 4 Room Virgo 1 Room Virgo 2 Room Virgo 3 Room Virgo 4

13:15-15:15 Session 1-3

Photonic Crystals and Plasmonics I

Bioimaging and Sensing I

CRP Workshop on Artificial Structures I

Microstructured and Special Optical

Fibres I

Waveguide based Devices

Workshop on Breakthroughs in Nonlinear Optics I

Nanostructures Enhanced Green

Energy Conversion

Mid-IR and Terahertz Plasmonics and Metamaterials

15:15-15:45 Afternoon Tea Break

15:45-17:45 Session 1-4

Semiconductors and Optoelectronic

Devices I

Bioimaging and Sensing II

CRP Workshop on Artificial Structures II

Microstructured and Special Optical

Fibres II Integration

Microwave Photonics Devices

Interface and Mechanism in

Photovoltaic Devices

Diffuse Optical Imaging and

Spectroscopy

Sat. 15 Dec

08:30-10:15 Session 2-1

Photonic Crystals and Plasmonics II

Emerging Techniques in Biophotonics

Plasmonics and Applications

Optical Fibre Technology I

Workshop on Disruptive Photonic

Technologies I

Workshop on Fabrication of Special

Fibres and Applications I

Optical Signal Processing

Quantum Cascade Lasers I

10:15-10:45 Morning Tea Break & Poster Session I

10:45-12:30 Session 2-2


Devices II

Optical Probes in Biophotonics

Nanostructures and Applications

Optical Fibre Technology II


Technologies II


Fibres and Applications II

Optical Transmission I

Quantum Cascade Lasers II


14:00-15:45 Session 2-3

Nanodevices and Biosensors

Bioimaging and Sensing III

Optoelectronics Devices

Optical Fibre Technology III


Technologies III


Fibres and Applications III

Optical Transmission II

Mid-IR and THz Waveguides

15:45-16:15 Afternoon Tea Break & Poster Session II

16:15:18:00 Session 2-4

Nanophotonics Bioimaging and Sensing IV

Photonic Crystal and Metamaterials

Optical Fibre Technology and

Applications

Plasmonics and Metamaterials I


Fibres and Applications IV

Optical Devices Mid-IR and THz Applications

19:00-21:00 Conference Banquet

Sun. 16 Dec

08:30-10:15 Session 3-1

Integrated and Guided-Wave optics

Bioimaging and Sensing V

Light Scattering and Absorption

Optical Fibre Grating Sensors

Plasmonics and Metamaterials II

Fibre Lasers and Applications I

Optical System and Devices

PGSC Keynote Session

10:15-10:45 Morning Tea Break & Poster Session III

10:45-12:30 Session 3-2


Devices III

Emerging Applications and

Devices Photonic Devices

Optical Fibre Grating Technology

Plasmonics and Metamaterials III

Workshop on Breakthroughs in

Nonlinear Optics II

Photonic Energy Systems and

Nanobiophotonics

PGSC Industry Session


14:00-15:45 Session 3-3

Nanophotonics and Photonic Devices

Bioimaging and Sensing VI

Modulators and Detectors

Special Optical Fibre Grating and Applications

Plasmonics and Metamaterials IV

Fibre Lasers and Applications II

Photonic Interconnect and Switching

Technologies for Future Data Centers I

PGSC Student Forum

15:45-16:15 Afternoon Tea Break & Poster Session IV

16:15:18:00 Session 3-4

Nanophotonics and Electro-Optic

Devices

Radio over Fibre and Advanced Optical Communications

Signal Processing via Silicon Photonics

Sensing Technology and Smart Grid

Photonic Interconnect and Switching

Technologies for Future Data Centers II

PGSC Panel Discussion on Challenges in Photonics Research and Future Career Development

& PGSC Best Student Paper Award Presentation

i. Programme at-a-Glance


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ii. Short Courses

Basics of Optical Communications 09:00-12:00, 13 December 2012

Description: Modern high-capacity telecommunication networks based on optical fiber technology

have become an integral and indispensable part of society. The importance of these networks requires

careful engineering in all technological aspects ranging from system design and installation to network

operation and maintenance. To attain an understanding of the fundamental principles, this course

covers the functions and operational characteristics of available optical fibers, transceivers, and

specialized passive and active components needed for designing modern optical fiber communication

links. It explains distortion effects on lightwave signals, defines bit error rate and receiver sensitivity,

and identifies procedures used to verify operating characteristics. The course also defines wavelength

division multiplexing (WDM) concepts, components, applications, and link design examples.

Fundamentals of Biophotonics 14:00-17:00, 13 December 2012

Description: Biophotonics deals with the interaction between light and biological matter. Basically it

is the science of generating, detecting, and controlling light to image, analyze, and manipulate

biological materials. Biophotonics techniques are used in a number of disciplines: in biology to

investigate molecular interactions, in medical research to study diseases in tissue and blood, in medical

clinics to noninvasively diagnose and treat diseases, in dentistry to treat caries and gum diseases, and

in the smart medical home to monitor vital signs of patients. This short course describes applications

of photonics techniques to biology and medicine. Topics include the following:

1. Interaction of light with biological cells and tissues

2. Biophotonics technologies, such as microscopy, spectroscopy, and tomography

3. Instruments: fiber-optic probes, biosensors, optical tweezers, medical lasers

4. Biomedical applications such as tissue engineering, low-level light therapy, monitoring patient

vital signs, endoscopy, and light-based cosmetics

Instructor Biography:

Dr. Gerd Keiser has extensive experience in studying photonic technology, such as component development, telecom optical transmission systems, fiber-to-the-premises (FTTP) networks, and intelligent building networks. During the past five years he was involved with biophotonics research and teaching. He has written four books related to photonic devices and communication networks. In addition, he teaches tutorial courses at various international conferences. Currently he is a Principal Consultant and Educator at PhotonicsComm Solutions in the USA. Earlier he was involved with telecom network designs, was a consultant for the telecom industry, was an adjunct

professor of electrical engineering at Boston University, and was a National Science Council Chair Professor at the National Taiwan University of Science and Technology. He is an IEEE Fellow, a SPIE Fellow, a member of OSA, and an Associate Editor of Optical Fiber Technology.


PGC2012


iii. Keynote Speakers

Professor David N. Payne

Optoelectronics Research Centre,

University of Southampton, UK

What Next for the Optical Internet?

Powering the optical fibre internet with its huge global reach, photonics has changed our lives.

Optical fibres snake across continents and oceans carrying terabits per second of data in a vast

information network that brings untold human connectivity. But capacity demand continues to grow at

a startling rate, doubling every two years, while the internet is estimated as burning several per cent of

world energy usage. The optical internet is reaching its capacity limits. The solution to these

consequences of unbridled demand is more photonics, reaching further into the network with optics to

overcome the existing bottlenecks and employing next-generation optical components – Internet 2.0.

The great success of optical fibres and planar circuits in telecommunications has generated

numerous tantalising applications in a number of related fields, such as sensing, bio- and nano-

photonics and high-power lasers. Incredibly, the same fibres that carry tiny internet signals can also

generate kilowatts of power, sufficient to cut through inch-thick steel and perhaps drive the next

generation of high energy physics.

The talk will celebrate optical fibre technology and asks what next?

Professor Nikolay I. Zheludev



From Metamaterials to Metadevices

We define metadevices as devices with all sorts of useful functionalities that can be achieved by

structuring of materials responsive to external stimuli on a scale smaller than the operational length.

We report an overview on our recent work on developing photonic and microwave electromagnetic

metadevices, in particular metadevices exploiting phase change media, electrosctatic and opto-

mechanical forces, coherent effects and nonlinear and quantum response of superconductors.


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iv. Workshops

Workshop on Disruptive Photonic Technologies

Organizers: Nikolay Zheludev (University of Southampton, UK)

Zexiang Shen (Nanyang Technological University, Singapore)

Session I (08:30 -- 10:30, 15 Dec 2012, Room Virgo 1)

Chair: Nikolay Zheludev

Speakers: Nader Engheta (University of Pennsylvania, USA)

Willie Padilla (Boston College, USA)

Session II (10:45 -- 12:45, 15 Dec 2012, Room Virgo 1)

Chair: Nikolay Zheludev

Speakers: Harald Giessen (University of Stuttgart, Germany)

Rachel Pei Chin Won (Nature Photonics, Japan)

Session III (14:00 -- 16:00, 15 Dec 2012, Room Virgo 1)

Chair: Zexiang Shen

Speakers: Benjamin Eggleton (University of Sydney, Australia)

David Smith (Duke University, USA)

Workshop on Breakthroughs in Nonlinear Optics

Organizers: John Dudley (CNRS - Université de Franche-Comté, Besançon, France)


Chair: John Dudley

Speakers: Daniel Gauthier (Duke University, USA)

Anna Peacock (University of Southampton, UK)

Alessia Pasquazi (INRS-EMT, Canada)


Chair: Anna Peacock

Speakers: Benjamin Eggleton (University of Sydney, Australia)

Tobias Kippenberg (EPFL (Swiss Federal Institute of Technology) Lausanne,

Switzerland)

John Dudley (CNRS - Université de Franche-Comté, Besançon, France)


PGC2012


Workshop on Fabrication of Special Fibres and Applications

Organizers: Kyounghwan (Ken) Oh (Yonsei University, South Korea)

Seongwoo Yoo (Nanyang Technological University, Singapore)


Chair: Kyounghwan (Ken) Oh

Speakers: Jonathan Knight (University of Bath, UK)

Dan Hewak (University of Southampton, UK)

Heike Ebendorff-Heidepriem (University of Adelaide, Australia)

Nicolas Joly (Max-Planck Institute for the Science of Light, Germany)


Chair: Seongwoo Yoo

Speakers: Bernard Dussardier (Université Nice-Sophia Antipolis, France)

Masaaki Hirano (Sumitomo Electric Industries, ltd., Japan)

Jie Luo (Yangtze Optical Fibre and Cable Company Ltd. R&D Center, China)

Session III (14:00 -- 16:00, 15 Dec 2012, Room Virgo 1)

Chair: Kantisara Pita

Speakers: John Ballato (Clemson University, USA)

Valerio Romano (University of Bern, Switzerland)

Georges Humbert (XLIM CNRS Université de Limoges, France)

Sergey Semjonov (Fiber Optics Research Center, Russian Federation)

Session IV (16:15 -- 17:45, 15 Dec 2012, Room Virgo 1)

Chair: Kyounghwan (Ken) Oh

Speakers: Raman Kashyap (Ecole Polytechnique de Montréal, Canada)

Walter Margulis (Acreo, Sweden)

Panel Discussion:

Expanding fiber functionality in the spectral, modal and spatial domain, which would be

most viable?


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v. Technical Programme


PGC2012


Session 1-1 (Date: 14.12.2012)

Compass Ballroom

9:15--9:30 Opening Ceremony

9:30--10:15 Keynote Speaker

What Next for the Optical Internet?

Prof. David N. Payne


Session 1-2 (Date: 14.12.2012)

Compass Ballroom

10:45--11:30 Keynote Speaker

From Metamaterials to Metadevices

Prof. Nikolay I. Zheludev


Session 1-3 (Date: 14.12.2012)

Room Pisces 1

Session Name: Photonic Crystals and Plasmonics

Session Chair: Soo Jin Chua

13:15--13:45

(c12a296) Invited

Oral 1-3A-1

Plasmonic Light Absorbers And Photothermal Effects

Min Qiu

13:45--14:15

(c12a307) Invited (cancelled)

Oral 1-3A-2

Surface plasmon resonance: how does that work at the nanoscale?

Boris Snopok

14:15--14:30

(c12a430)

Oral 1-3A-3

Generation Of Short Contrapropagating Pulses Of Second Harmonic In Frequency Double Domain

Positive/Negative Index Metamaterials

Alexander K. Popov, Igor S. Nefedov, Sergey A. Myslivets

14:30--15:00

(c12a531) Invited

Oral 1-3A-4

Engineering of Vis-NIR Metamaterials towards Revolutionary Ultrasensitive and Versatile Plasmonic

Biosensors

Jun Zhang, Cuong Cao, Qihua Xiong

15:00--15:15

(c12a690)

Oral 1-3A-5

1D Magneto-Plasmonic Periodic Structures-Oblique Wave Propagation

Shahram Hosseinzadeh

Room Pisces 2

Session Name: Bioimaging and Sensing I

Session Chair: U. S. Dinish

13:15--13:45

(c12a716) Invited

Oral 1-3B-1

Optothermal Therapy With Nanoparticles

Min Gu

13:45--14:00

(c12a605)

Oral 1-3B-2

Photoacoustic Phasoscopy for Tissue Characterization

Fei Gao, Yuanjin Zheng, Xiaohua Feng, Claus-Dieter Ohl

14:00--14:30

(c12a294) Invited

Oral 1-3B-3

Two-photon Fluorescence Nanothermometry in Bio-Photonics

Jaque Daniel

14:30--14:45

(c12a506)

Oral 1-3B-4

Metallic Nanoantenna Arrays for LSPR and SERS Biosensing


PGC2012


Stephanie Dodson, Shuzhou Li, Qihua Xiong

14:45--15:00

(c12a384)

Oral 1-3B-5

Optical Imaging of Hyperoxic Lung Injury

Reyhaneh Sepehr, Sepideh Maleki, Annie Eis, Girijia Konduri, Mahsa Ranji

Room Pisces 3

Session Name: CRP Workshop on Artificial Structures I

Session Chair: Dao Hua Zhang

13:15--13:45

(c12a742) Invited

Oral 1-3C-1

Heteroepitaxial indium phosphide micro and nanostructures on silicon for silicon photonics

Sebastian Lourdudoss

13:45--14:15

(c12a414) Invited

Oral 1-3C-2

Active Liquid Crystalline 3-D Photonic-Crystal and Plasmonics Metamaterials/Nanostructures

Iam Choon Khoo

14:15--14:45

(c12a421) Invited

Oral 1-3C-3

Metamaterials to bridge propagating waves with surface waves and control electromagnetic waves

Shulin Sun, Qiong He, Shiyi Xiao, Wujiong Sun, Zhengyong Song, Lei Zhou

14:45--15:15

(c12a637) Invited

Oral 1-3C-4

Fourier Transform-based k·p Method: An Approach to Meshless Modeling of Low-dimensional

Heterostructures

Ting Mei, Qiuji Zhao, Dao Hua Zhang

Room Pisces 4

Session Name: Microstructured and Special Optical Fibres I

Session Chair: Dora Juan Juan Hu

13:15--13:45

(c12a601) Invited

Oral 1-3D-1

Microstructured Optical Fibers: An Emerging Fiber Optics Platform for Application-specific Specialty

Fiber Designs

Bishnu P. Pal, Somnath Ghosh, Ajanta Barh, Ravendra K. Varshney

13:45--14:15

(c12a357) Invited

Oral 1-3D-2

Innovation On Fabrication Method For Large Mode-Area And High Concentration Yb3+-Doped

Microstructure Optical Fibers

Guiyao Zhou

14:15--14:30

(c12a629)

Oral 1-3D-3

Design and Fabrication of LMA Low-Bending Loss Leakage Channel Fibers

Mrinmay Pal, Kunimasa Saitoh

14:30--14:45

(c12a486)

Oral 1-3D-4

Design and Fabrication of Side-channel Photonic Crystal Fiber

Ying Cui, Georges Humbert, Xuan-Quyen Dinh, Feng Luan, Hai Vu Ngoc, Tran Quoc Tien, Jean-

Louis Auguste, Ping Perry Shum

14:45--15:00

(c12a658)

Oral 1-3D-5

Fabrication and Characteristic of A Simplified Hollow-core Microstructured Fiber

Huifeng Wei, Xinben Zhang

Room Virgo 1

Session Name: Waveguide based Devices

Session Chair: Graham Reed

13:15--13:30

(c12a385)

Oral 1-3E-1

Polarization Splitter Using Horizontal Slot waveguides

Huijuan Zhang, Suchandrima Das, Ying Huang, Chao Li, Mingbin Yu, John Thong, Guo-Qiang Lo

13:30--13:45

(c12a401)

Oral 1-3E-2

TE-Pass Polarizer Based on Horizontal Nanoplasmonic Slot Waveguide

Ying Huang, Shiyang Zhu, Huijuan Zhang, Tsung-Yang Liow, Patrick Lo


PGC2012


13:45--14:15

(c12a464) Invited

Oral 1-3E-3

Recent Advances in Suspended Silicon Membrane Waveguides

Hon Ki Tsang, Zhen-Zhou Cheng

14:15--14:30

(c12a723)

Oral 1-3E-4

Mode Converter Between Channel Waveguide And Slot Waveguide

Jing Zhang

14:30--14:45

(c12a391)

Oral 1-3E-5

Cleaved Fiber-to-Nano Waveguide Mode Converter for Silicon Photonics Devices

Qing Fang, Junfeng Song, Tsung-Yang Liow, Lianxi Jia, Xianshu Luo, Mingbin Yu, Guoqiang Lo

14:45--15:00

(c12a472)

Oral 1-3E-6

Tolerant Wideband High-Efficiency Grating Coupler For TM Mode Excitation

Zhe Xiao, Feng Luan, Tsung-Yang Liow, Jing Zhang, Ping Shum

Room Virgo 2

Session Name: Workshop on Breakthroughs in Nonlinear Optics I

Session Chair: John Dudley

13:15--14:00

(c12a724) Invited

Oral 1-3F-1

Chaos In Optoelectronics And Applications

Daniel Gauthier

14:00--14:30

(c12a725) Invited

Oral 1-3F-2

New Frontiers in Functionalized Optical Fibers

Anna Peacock

14:30--15:00

(c12a703) Invited

Oral 1-3F-3

Advances in Nonlinear Integrated and Waveguide Devices

Alessia Pasquazi, Marco Peccianti, Dave Moss, Roberto Morandotti

Room Virgo 3

Session Name: Nanostructures Enhanced Green Energy Conversion

Session Chair: Jiguang Li

13:15--13:45

(c12a312) Invited

Oral 1-3G-1

Novel vertically-aligned ZnO Nanoforms for Excitonic Solar Cells: Dye sensitized and Organic Solar

Cells

Monica Lira-Cantu, Irene Gonzalez-Valls

13:45--14:15

(c12a450) Invited

Oral 1-3G-2

TiO2 Nanostructure Design And Its Application In Dye-Sensitized Solar Cells

Ziqi Sun, Jung Ho Kim, Shi Xue Dou

14:15--14:45

(c12a494) Invited

Oral 1-3G-3

Optimization of Photoanode Materials for High-Efficiency Dye-Sensitized Solar Cells

Litao Sun

14:45--15:00

(c12a485)

Oral 1-3G-4

Quantum Cascade Structures for Efficient Thermo-Photovoltaic Energy Conversion

Maruf Ahmed, Delwar Hossain, Anisuzzaman Talukder

Room Virgo 4

Session Name: Mid-IR and Terahertz Plasmonics and Metamaterials

Session Chair: Wen-Hui Fan

13:15--13:45

(c12a338) Invited

Oral 1-3H-1

Plasmonic materials at mid-IR and Terahertz range

Jing Hua Teng

13:45--14:15

(c12a776) Invited

Oral 1-3H-2


PGC2012


Surface magneto plasmons

Qijie Wang, Bin Hu

14:15--14:30

(c12a640)

Oral 1-3H-3

Developing Ultrafast Raman Laser Sources

Aravindan Warrier

Session 1-4 (Date: 14.12.2012)

Room Pisces 1

Session Name: Semiconductors and Optoelectronic Devices I (cancelled)

Session Chair: Atsushi A. Yamaguchi

Room Pisces 2

Session Name: Bioimaging and Sensing II

Session Chair: Min Gu

15:45--16:15

(c12a293) Invited

Oral 1-4B-1

Highly luminescent silicate nanoparticles obtained by spray-drying process for biophotonics.

Fabien Dubois, Josephine Zimmermann, CéCile Philippot, Alain Ibanez

16:15--16:45

(c12a292) Invited

Oral 1-4B-2

Confocal Fluorescence Spectral Imaging Technique and its Applications to Drug Development

Alexey Feofanov

16:45--17:00

(c12a489)

Oral 1-4B-3

Plasmon-Enhanced Whispering Gallery Mode Biosensing

Frank Vollmer

17:00--17:15

(c12a525)

Oral 1-4B-4

Development of multiplexed silicon dual microring sensor for the detection of bladder cancer

biomarkers

Kyung Woo Kim, Junfeng Song, Qing Liu, Yong Shin, Mi Kyung Park

17:15--17:30

(c12a579)

Oral 1-4B-5

Light Scattering and Colour Generation in exoskeletons of Jewelled Beetles

Valyukh Sergiy, Arwin Hans, Järrendahl Kenneth

Room Pisces 3

Session Name: CRP Workshop on Artificial Structures II

Session Chair: Ting Mei

15:45--16:15

(c12a578) Invited

Oral 1-4C-1

A new approach to a practical subwavelength-resolving microscope

Yi-Chen Chuang, Richard Dudley, Michael Fiddy

16:15--16:45

(c12a721) Invited

Oral 1-4C-2

Plasmonic Nanorod Metamaterials For Nanophotonics

Anatoly V Zayats

16:45--17:15

(c12a767) Invited

Oral 1-4C-3

Plasmonic manipulation through light control and its applications in microscopic imaging and sensing

Xiaocong Yuan

Room Pisces 4

Session Name: Microstructured and Special Optical Fibres II

Session Chair: Feng Luan

15:45--16:15

(c12a499) Invited

Oral 1-4D-1

Plasmonics Enhanced Scattering in Photonic Crystal Fibers

Xia Yu

16:15--16:30

(c12a351)

Oral 1-4D-2

Broadband, Coherent Mid-IR Supercontinuum Generation using Highly Nonlinear Tapered Photonic

Crystal Fibers


PGC2012


Amine Ben Salem, Rim Cherif, Mourad Zghal

16:30--16:45

(c12a374)

Oral 1-4D-3

Optically switchable all-fiber optic polarizer

Ching-Yun Huang, Wei-Huan Fu, Vincent K. S. Hsiao

16:45--17:00

(c12a561)

Oral 1-4D-4

Ultra-Flattened Near-zero Dispersion PCF Using Selective Liquid Infiltration: A new study with four

air-hole rings

Partha Maji, Partha Roychaudhuri

17:00--17:15

(c12a564)

Oral 1-4D-5

Light-induced waveguides in chiral nematic liquid crystals

Miroslaw Karpierz

17:15--17:30

(c12a571)

Oral 1-4D-6

Photonic Crystal Fiber Strain Sensors for Laparoscopic Surgical Devices

Sunish Mathews, Dean Callaghan, Yuliya Semenova, Ginu Rajan, Gerald Farrell

17:30--17:45

(c12a667)

Oral 1-4D-7

Fabrication and Development of Flat Fibers

Katrina D Dambul

Room Virgo 1

Session Name: Integration

Session Chair: Jason Png

15:45--16:15

(c12a388) Invited

Oral 1-4E-1

Planar Photonics for CMOS Integration

David Cumming, Timothy Drysdale, James Grant, Iain Mccrindle, Kirsty Walls

16:15--16:30

(c12a696)

Oral 1-4E-2

Readout Integrated Circuit with Dual Mode Design for Infrared Focal Plane Array Photo-detector

Yi-Chuan Lu, Tai-Ping Sun, Hsiu-Li Shieh, Shiang-Feng Tang, Wen-Jen Lin

16:30--16:45

(c12a595)

Oral 1-4E-3

GaSb-based integrated lasers and photodetectors on a Silicon-On-Insulator waveguide circuit for

sensing applications in the shortwave infrared

Nannicha Hattasan

16:45--17:00

(c12a403)

Oral 1-4E-4

Thermal-tunable microring resonator-based WDM optical receiver for on-chip optical interconnect

Xianshu Luo, Junfeng Song, Qing Fang, Xiaoguang Tu, Tsung-Yang Liow, Mingbin Yu, Guo-Qiang Lo

17:00--17:30

(c12a513) Invited

Oral 1-4E-5

Silicon photonics for on-chip optical interconnects and optical trapping

Andrew W. Poon, Shaoqi Feng , Ting Lei, Hong Cai, Jiawei Wang, Yu Li

Room Virgo 2

Session Name: Microwave Photonics Devices

Session Chair: Pascale Nouchi

15:45--16:15

(c12a734) Invited

Oral 1-4F-1

Application of Nitride-based Semiconductor Materials to High Speed THz Photodiode

AuréLien Gauthier-Brun, Jing Hua Teng, Elhadj Dogheche, Liu Wei, Anisha Gokarna, Masayoshi

Tonouchi, Didier Decoster, Soo Jin Chua

16:15--16:30

(c12a413)

Oral 1-4F-2

InGaAsP/InGaP QW Structures Multi-Wavelength High Power Laser Diode Using Quantum-Well

Intermixing

Zhongliang Qiao , Xiaohong Tang, Eng Kian Kenneth Lee, Peng Huei Lim , Baoxue Bo

16:30--16:45

(c12a460)

Oral 1-4F-3

Comparison of First and Second Annealing GaN Photocathode

Xiaohui Wang

16:45--17:00

(c12a492)

Oral 1-4F-4

Full spectrum millimeter-wave LiNbO3 electro-optic modulator

Julien Macario, Peng Yao, Shouyuan Shi, Alicia Zablocki, Charles Harrity, Richard D. Martin,

Christopher A. Schuetz, Dennis W. Prather


PGC2012


17:00--17:15

(c12a677)

Oral 1-4F-5

Novel Wireless Millimeter-Wave to Lightwave Signal Converters by Electro-Optic Crystals

Suspended to Narrow-Gap-Embedded Patch-Antennas on Low-k Dielectric Substrates

Yusuf Nur Wijayanto, Hiroshi Murata, Yasuyuki Okamura

17:15--17:45

(c12a697) Invited

Oral 1-4F-6

Investigation of Structural, Morphological and Optical Properties of GaN/AlGaN Heterostructures on

Si

Irma Saraswati, Elhadj Dogheche, Didier Decoster, Nji Raden Poespawati, Retno Wigajatri, Suk-Min

Ko, Y.H. Cho, Dimitris Pavlidis

Room Virgo 3

Session Name: Interface and Mechanism in Photovoltaic Devices

Session Chair: Litao Sun

15:45--16:15

(c12a313) Invited

Oral 1-4G-1

Solar-driven photoelectrochemical water splitting with vertically aligned Ta3N5 nanorod arrays

Yanbo Li, Kubota Jun, Kazunari Domen

16:15--16:45

(c12a400) Invited

Oral 1-4G-2

Double Textured Front and Back Surface for Light Trapping in a Solar Cell

S. M. Iftiquar

16:45--17:15

(c12a495) Invited

Oral 1-4G-3

Solution Processable TiOx Thin Films for Photovoltaic Applications

Jiguang Li

17:15--17:30

(c12a611)

Oral 1-4G-4

Electronic Energy Transfer and Carrier Dynamics in CdSe/CdTe Binary Nanocrystals

Guozhong Xing

Room Virgo 4

Session Name: Diffuse Optical Imaging and Spectroscopy

Session Chair: Beop-Min Kim

15:45--16:15

(c12a728) Invited

Oral 1-4H-1

The effect of electrical stimulation on the brain system

Minah Suh

16:15--16:30

(c12a638)

Oral 1-4H-2

Non-invasive Hemodynamic Response Monitoring of Chlorin e6-mediated Photodynamic Therapy

Using Diffuse Optical Measurement

Jing Dong, Hui Jin Toh, Renzhe Bi, Patricia S.P. Thong, Khee-Chee Soo, Kijoon Lee

16:30--16:45

(c12a538)

Oral 1-4H-3

Hemodynamic Responses to Odor Stimulation in the Main Olfactory Bulb of Rats using NIRS

Seungduk Lee, Jaewoo Shin, Hwan Gon Lee, Jae-Hong Park, Changkyun Im, Choong-Ki Kim,

Hyung-Cheul Shin, Beop-Min Kim

16:45--17:00

(c12a604)

Oral 1-4H-4

Role of hemodynamic parameters measured with diffuse optics for diagnosis and therapy monitoring

of human breast cancer

Regine Choe, David Busch, Turgut Durduran, Arjun Yodh

17:00--17:15

(c12a718)

Oral 1-4H-5

Theoretical investigation of near-infrared light path in multi-layer brain models for three DOT systems

Xiaowei Zhou

17:15--17:30

(c12a713)

Oral 1-4H-6

A numerical method for simulating noncontact diffuse reflectance measurements in epithelial cancer

Caigang Zhu, Quan Liu

17:30--17:45

(c12a462)

Oral 1-4H-7

Spatial Diffuse Correlation Spectroscopy for Depth Selective Flow Measurement

Renzhe Bi, Jing Dong, Kijoon Lee

Session 2-1 (Date: 15.12.2012)


PGC2012


Room Pisces 1

Session Name: Photonic Crystals and Plasmonics II

Session Chair: Xiaohong Tang

8:30--9:00

(c12a354) Invited

Oral 2-1A-1

Optical properties of metamaterials near optical wavelengths

Bruno Gallas

9:00--9:15

(c12a694)

Oral 2-1A-2

Transversely Quasicrystallographic 3D Photonic Chiral Lattices: Polarization-sensitive Complex

Photonic Band gap structures

Jolly Xavier, Joby Joseph

9:15--9:30

(c12a446)

Oral 2-1A-3

Optical Function Generator based on Cascaded Nonlinear Mixing in a Photonic Crystal

Han Sung Chan, Zhi-Ming Hsieh, Lung-Han Peng, Andy Kung

9:30--9:45

(c12a699)

Oral 2-1A-4

Optically-Driven Deposition of Carbon Nanotubes on Erbium-Doped Fibers for Short-Cavity

Passively Mode-Locked Fiber Lasers

Huan Huan Liu, Kin Kee Chow

9:45--10:00

(c12a793)

Oral 2-1A-5

Fabrication Zirconia-Erbium Doped Fibers and Its Application in the Generation of Non-Linear

Phenomena and Compact Pulsed Fiber Laser Systems

H. Ahmad, K. Thambiratnam, M. C. Paul, A. Z. Zulkifli, S. W. Harun

10:00--10:30

(c12a797) Invited

Oral 2-1A-6

Graphene and Nanotube Based Ultrafast Lasers

D. Popa, Z. Sun, T. Hasan, F. Torrisi, Z. Jiang, F. Wang, A. C. Ferrari

Room Pisces 2

Session Name: Emerging Techniques in Biophotonics

Session Chair: Gil Rosenman

8:30--9:00

(c12a576) Invited

Oral 2-1B-1

Miniaturized optofluidic label-free cytometry

Xuantao Su, Yan Yang, Xuming Sun, Xu Qiao, Kun Song, Beihua Kong

9:00--9:15

(c12a542)

Oral 2-1B-2

Plasmonic Nanohole Array for Biosensor Applications

Sweeyin Lim, Agampodi Promoda Perera, Yong Zhang, Mi Kyoung Park

9:15--9:30

(c12a644)

Oral 2-1B-3

Multiple optical tweezers generated by Fresnel zone plate arrays

Yunfeng Jiang, Kaikai Huang, Xuanhui Lu

9:30--10:00

(c12a592) Invited

Oral 2-1B-4

Single-molecule tracking microscopy: Unraveling the spatio-temporal dynamics of individual proteins

in living cells

Davide Normanno

Room Pisces 3

Session Name: Plasmonics and Applications

Session Chair: Jing Hua Teng

8:30--9:00

(c12a736) Invited

Oral 2-1C-1

Super-Resolution Near-Field Imaging and Sensing by Plasmonic Nanoparticles on AgOx Thin Film

Din Ping Tsai

9:00--9:15

(c12a562)

Oral 2-1C-2

Photonic Band-Gap Optical Filters Using Different Air-Bridge Structures

Farzin Emami, Amir Mehr, Farzad Mohajeri

9:15--9:30

(c12a577)

Oral 2-1C-3

Photonic Chiral Structures with Defects

Jagadeesh Syamprasad, Jolly Xavier, Joby Joseph


PGC2012


9:30--9:45

(c12a476)

Oral 2-1C-4

Slow Light Based Waveguides with Nanopillar Cavities for Photonic Switching Applications

Nagesh Janrao, Vijay Janyani

9:45--10:00

(c12a763)

Oral 2-1C-5

Transformation Optics Applied to Plasmonics: From Nanocrescents to Nanowire Dimers

Dang Yuan Lei

10:00--10:15

(c12a761)

Oral 2-1C-6

Design of sharp bends with transformation plasmonics

Yueke Wang

10:15--10:30

(c12a558)

Oral 2-1C-7

Real-time determination of metal concentrations in liquid flows using micro-plasma emission

spectroscopy

Kalle Blomberg Von Der Geest, Jari Hyvonen, Toni Laurila

Room Pisces 4

Session Name: Optical Fibre Technology I

Session Chair: Ping Shum

8:30--9:00

(c12a710) Invited

Oral 2-1D-1

Photonic crystal fiber-based interferometry for sensing applications

Dora Juan Juan Hu

9:00--9:30

(c12a701) Invited

Oral 2-1D-2

Microfiber Structures and its Sensor and Laser Applications

Sulaiman Wadiharun Harun

9:30--9:45

(c12a508)

Oral 2-1D-3

Temperature-independent strain sensor based on simplified hollow-core photonic crystal fibers

Zhifang Wu, Yan-Ge Liu, Zhi Wang, Tingting Han, Perry Ping Shum

9:45--10:00

(c12a511)

Oral 2-1D-4

A high sensitivity temperature sensor based on a selectively Filled Photonic Crystal Fiber Sagnac

Interferometer

Tingting Han, Yange Liu, Zhi Wang, Zhifang Wu

10:00--10:15

(c12a621)

Oral 2-1D-5

Assembly Photonic Crystal Arrays on the Facet of Optical Fibers and its Applications

Haibin Ni, Ming Wang, Ting-Ting Wang, Wei Chen

Room Virgo 1

Session Name: Workshop on Disruptive Photonic Technologies I

Session Chair: Nikolay Zheludev

8:30--9:30

(c12a727) Invited

Oral 2-1E-1

Recent advances in meta-optics

Nader Engheta

9:30--10:30

(c12a779) Invited

Oral 2-1E-2

Metamaterial Electromagnetic Wave Absorbers: Applications from Imaging to Energy Harvesting

Willie Padilla

Room Virgo 2

Session Name: Workshop on Fabrication of Special Fibres and Applications I

Session Chair: Kyounghwan (Ken) Oh

8:30--9:00

(c12a733) Invited

Oral 2-1F-1

Silica-based fibers for the mid-IR

Jonathan Knight, Fei Yu

9:00--9:30

(c12a755) Invited

Oral 2-1F-2

Next steps in the fabrication of Chalcogenide glass optical fiber and related photonic devices


PGC2012


Dan Hewak

9:30--10:00

(c12a773) Invited

Oral 2-1F-3

Pushing the limits in soft glass properties and microstructured fibre fabrication

Heike Ebendorff-Heidepriem

10:00--10:30

(c12a377) Invited

Oral 2-1F-4

Recent advances in non-linear optics in gas-filled Kagome-fiber

Nicolas Joly, John Travers, Kafai Mak, Francesco Tani, Wonkeun Chang, Gordon Wong, Philipp

Hölzer, Mohiudeen Azhar, Philip Russell

Room Virgo 3

Session Name: Optical Signal Processing

Session Chair: Calvin Chan

8:30--9:00

(c12a297) Invited

Oral 2-1G-1

Recent Progress in Ultrafast Optical Signal Processing

Jian Wang

9:00--9:30

(c12a419) Invited

Oral 2-1G-2

Ultrafast optical signal processing assisted by chirp dynamics in semiconductor optical amplifiers

Yong Liu

9:30--9:45

(c12a441)

Oral 2-1G-3

Mitigation of Nonlinearity based on Optimized Percentage of Dispersion Pre-compensation in

Coherent Optical PDM-OFDM Systems

Shengjiao Cao, Changyuan Yu, Pooi-Yuen Kam

9:45--10:00

(c12a431)

Oral 2-1G-4

Design and Analysis of Diversity Optical CDMA

Wing Kwong

10:00--10:15

(c12a392)

Oral 2-1G-5

Optimization of an Optical Array Receiver for Deep-Space Optical Communication during Earth-Mars

Conjunction Phase

Ali Hashmi, Ali Eftekhar, Ali Adibi, Farid Amoozegar

Room Virgo 4

Session Name: Quantum Cascade Lasers I

Session Chair: Qijie Wang

8:30--9:00

(c12a766) Invited

Oral 2-1H-1

Microwave stabilization and modulation of quantum cascade lasers

Carlo Sirtori

9:00--9:30

(c12a771) Invited

Oral 2-1H-2

Quantum well infrared photodetectors operated at and near room temperature

Hui Chun Liu

9:30--10:00

(c12a712) Invited

Oral 2-1H-3

Approaches towards room temperature THz lasers

Greg Sun

10:00--10:15

(c12a478)

Oral 2-1H-4

Microscopic analysis on optical gain of terahertz quantum cascade lasers: many-body and non-

parabolicity effects

Tao Liu, Qijie Wang

10:15--10:30

(c12a442)

Oral 2-1H-5

Quantum Cascade Lasers of λ≈14 μm Based on Three-phonon-resonance Design

Bo Meng, Qijie Wang

Poster Session I (Date: 15.12.2012)


PGC2012


P1-01

(c12a337) Fabrication of Biogenic Inorganic Nanomaterials by Shewanella spp

Cuong Ho, Anh-Tuyet Nguyeh, Thi-phuong-Quynh Le, Shenghwa Jiang, Hor-Gil Hur

P1-02

(c12a447) Investigation of tunable TE graphene surface plasmon

Xiaoyong He, Qiejie Wang

P1-03

(c12a535) Simulation-based Study of Bragg Grating Effects in Multi-layer Liposomes

Wei Long Ng, Derrick Yong, Xia Yu, Chi Chiu Chan

P1-04

(c12a630) Hybrid Plasmonic Waveguides for Nonlinear Applications

Sarah Aldawsari, Brian West

P1-05

(c12a342) Shaping the Profile of Photonic Crystal Nanorods

Xiaoxiao Jiang, Qiongchan Gu, Jiangtao Lv, Yanjun Lu, Guangyuan Si, Hongjun Dun, Zhenhe Ma,

Fengwen Wang

P1-06

(c12a438) A library of ultra-compact multimode-interference coupler for optical splitters and combiners

on SOI System

Haifeng Zhou, Lianxi Jia, Kavitha Devi Buddharaju, Guoqiang Lo

P1-07

(c12a536) Experimental Investigation of a Multi-wavelength Erbium-doped Photonic Crystal Fiber Laser

Wanjun Zheng

P1-08

(c12a635) Chalcogenide Glass Microstructured Exposed-core Fiber for Chemical Sensing

Perrine Toupin, Laurent Brilland, Catherine Boussard-Plédel, Bruno Bureau, Johann Trolès

P1-09

(c12a344) The Fiber-Optic Sensing Fluorescence Detection System for Chinese Traditional Medicine

Injection Based on Charge-coupled Devices

Jiangtao Lv, Qiongchan Gu, Xiaoxiao Jiang, Guangyuan Si, Zhenhe Ma, Fengwen Wang

P1-10

(c12a443) Spatial light source design for depth direction coherence control

Dong Wei, Hirokazu Matsumoto

P1-11

(c12a541) Annealing Effects on Properties of InSbN Alloys Prepared by Ion Implantation

Daohua Zhang, Yunjiang Jin

P1-12

(c12a641) Face Recognition based on IFS with GA and BP Neural Network

Huasong Chen, Keding Yan, Qinghua Wang, Zhenhua Li

P1-13

(c12a352) A CO Detection System Based on Double Fiber Bragg Gratings

Shuhua Ma, Qiongchan Gu, Jiangtao Lv

P1-14

(c12a454) Discrete light propagation in photonic liquid crystal fibers

Katarzyna Rutkowska

P1-15

(c12a546) Laser-Based Mosquito Repelling Module

Chantira Boonsri, Sarun Sumriddetchkajorn, Prathan Buranasiri

P1-16

(c12a648) Experimental and Theoretical Study of Excitonic Electroabsorption in High Purity GaAs at

Room Temperature

Durga Prasad Sapkota, Madhu Sudan Kayastha, Makoto Takahashi, Koichi Wakita

P1-17

(c12a360) A Research of Stress Survey System Based on Fiber Bragg Grating

Xiaohong Ni, Zhiguang Xu

P1-18

(c12a456) Minimize quantum-defect heating in thulium-doped silica fiber amplifiers by tandem-pumping

Junhua Ji, Seongwoo Yoo, Ping Shum, Johan Nilsson

P1-19

(c12a549) Integration of Si/SiO2 Multilayer GRIN Lens Mode-Size Converter to Single-Mode Si Rib-

Waveguide

Ter Hoe Loh, Qian Wang

P1-20

(c12a652) Photonic Liquid Crystal Fibers - Perspectives for Practical Applications

Slawomir Ertman, Marzena Tefelska, Milosz Chychlowski, Agata Siarkowska, Tomasz Wolinski

P1-21

(c12a364) A Two-Fiber Bragg Grating Gas Leakage Detection Sensor

Lijuan Yang, Tao Liu, Jiangtao Lv, Guangyuan Si

P1-22

(c12a458) Self-Assembled Microstructures and Their applications for Microlasers and Sensors

Rui Chen, Van Duong Ta, Handong Sun

P1-23

(c12a550) Photonic Generation of Microwave/Millimeter Waves by Using an Optic Fiber Ring Cavity with

a Chirped Gaussian Pulse Injection

Haiyan Chen

P1-24

(c12a655) Quantitative diagnosis of cervical precancer using fluorescence intensity and lifetime from the

stroma

Jun Gu, Chit Yaw Fu, Beng Koon Ng, Sirajudeen Gulam Razul, Soo Kim Lim

P1-25 Investigation on plasmon-induced bubble formation in fluids


PGC2012


(c12a650) Zehui Yong, Kai Zhang, Aoqun Jian, Zefeng Chen, Xuming Zhang, Yu Wang

Session 2-2 (Date: 15.12.2012)

Room Pisces 1

Session Name: Semiconductors and Optoelectronic Devices II

Session Chair: Hark Hoe Tan

10:45--11:15

(c12a339) Invited

Oral 2-2A-1

Optical polarization and anisotropic gain characteristics in semipolar and nonpolar InGaN quantum

well lasers

Atsushi A. Yamaguchi

11:15--11:45

(c12a620) Invited

Oral 2-2A-2

Controllable Modulation of Optoelectronic Properties Based on Phosphine Oxide Semiconductors

Hui Xu

11:45--12:00

(c12a465)

Oral 2-2A-3

Influence of Cathode Module Technology on Photoemission of Transmission-mode GaAs

Photocathode Materials

Jing Zhao, Wenting Qu, Benkang Chang

12:00--12:15

(c12a569)

Oral 2-2A-4

The substrate cooling effect of ion beam post treatment on ZAO films properties

Wenna Wang, Dawei Zhang, Qi Wang, Chuanxian Tao, Zhengji Ni, Songlin Zhuang, Ting Mei,

Daohua Zhang

12:15--12:30

(c12a444)

Oral 2-2A-5

Inductively coupled plasma etching of c- and a-plane AlxGa1-xN over the entire Al composition range

Amit Shah, Masihhur Laskar, Azizur Rahman, Mahesh Gokhale, Arnab Bhattacharya

12:30--12:45

(c12a463)

Oral 2-2A-6

Influence of Electric Field Penetration on Uniformly Doping GaAs Photocathode Photoelectric

Emission Properties

Ling Ren

Room Pisces 2

Session Name: Optical Probes in Biophotonics

Session Chair: Xuantao Su

10:45--11:15

(c12a319) Invited

Oral 2-2B-1

Photobiology and Photochemistry of Photoactive Yellow Protein

Masato Kumauchi

11:15--11:45

(c12a758) Invited

Oral 2-2B-2

Direct imaging of singlet oxygen luminescence during photosensitization

Buhong Li

11:45--12:00

(c12a639)

Oral 2-2B-3

Application of Plasmonic Nanomaterials for Biosensing and Bioimaging

Wing-Cheung Law

Room Pisces 3

Session Name: Nanostructures and Applications

Session Chair: Boris Luk`yanchuk

10:45--11:15

(c12a510) Invited

Oral 2-2C-1

Magnetic response of dielectric nanostructures: theory and applications

Andrey Miroshnichenko

11:15--11:45

(c12a516) Invited

Oral 2-2C-2

Visible magnetic response and antenna properties of silicon nanoparticles

Arseniy Kuznetsov, Yuan Hsing Fu, Andrey Miroshnichenko, Yefeng Yu

11:45--12:15

(c12a748) Invited

Oral 2-2C-3


PGC2012


Hybrid plasmonic nano-objects for optical limiting effect

Tsung Sheng Kao, Karthik Kumar Shanmugavelayudam, Ming Hui Hong

12:15--12:30

(c12a355)

Oral 2-2C-4

Wavelength-dependent emission enhancement through the design of active plasmonic nanoantennas

MéLanie Ferrié, Nicola Pinna, Renaud Vallée, Serge Ravaine

Room Pisces 4

Session Name: Optical Fibre Technology II

Session Chair: Tomasz Wolinski

10:45--11:15

(c12a333) Invited

Oral 2-2D-1

Highly-sensitive temperature measurement with alcohol liquid-filled microstructured optical fibers

Xinyong Dong

11:15--11:45

(c12a598) Invited

Oral 2-2D-2

Multi-wavelength Fiber Laser with Comb Filter Based on Inter-core Interference in Photonic Crystal

Fiber

Bongkyun Kim, Khuramm Naeem, Jihee Han, Youngjoo Chung

11:45--12:00

(c12a547)

Oral 2-2D-3

Hybrid Photonic Crystal Fiber Selectively Infiltrated with Liquid Crystal

Karolina Milenko, Dora Juan Juan Hu, Perry Ping Shum, Tomasz Wolinski

12:00--12:15

(c12a631)

Oral 2-2D-4

A microfiber-based highly birefringent device

Ye Chen, Jun-Long Kou, Fei Xu, Yan-Qing Lu

12:15--12:30

(c12a461)

Oral 2-2D-5

Whispering gallery resonator based on index profiling

Yanyan Zhou

Room Virgo 1

Session Name: Workshop on Disruptive Photonic Technologies II

Session Chair: Nikolay Zheludev

10:45--11:45

(c12a780) Invited

Oral 2-2E-1

Applications of complex plasmonics

Harald Giessen

11:45--12:45

(c12a777) Invited

Oral 2-2E-2

Nature Photonics and you

Rachel Pei Chin Won

Room Virgo 2

Session Name: Workshop on Fabrication of Special Fibres and Applications II

Session Chair: Seongwoo Yoo

10:45--11:15

(c12a393) Invited

Oral 2-2F-1

Erbium-Doped Transparent Glass Ceramic Optical Fibres: Characterization using mass spectroscopy

and molecular dynamics modeling

ValéRie Mauroy, Wilfried Blanc, Christelle Guillermier, Bernard Dussardier, Michèle Ude, Stanislaw

TrzeSien

11:15--11:45

(c12a704) Invited

Oral 2-2F-2

Modern Fabrication of Classical Silica-based Fibers

Masaaki Hirano

11:45--12:15

(c12a722) Invited

Oral 2-2F-3

New Progress on Specialty Fibers

Jie Luo, Liangming Xiong, Huifeng Wei, Rui Zhang, Jiangtao Guo, Tao Xia, Weijun Tong, Kangkang

Chen


PGC2012


Room Virgo 3

Session Name: Optical Transmission I

Session Chair: Qi Yang

10:45--11:15

(c12a745) Invited

Oral 2-2G-1

A 240 Gb/s Self-coherent CO-OFDM Transmission Applying Real-Time Receiption over 48 KM

SSMF

Xiao Xiao, Yang Qi

11:15--11:45

(c12a432) Invited

Oral 2-2G-2

All-Optical Modulation Format Conversion from OOK to Advanced Formats Based on Fiber

Nonlinearity

Akihiro Maruta

11:45--12:00

(c12a346)

Oral 2-2G-3

Numerical Evaluation of Robust and Spectrally Efficient 112Gbit/s Transmission Employing Digital

Backward Propagation

Rameez Asif, Chien-Yu Lin, Bernhard Schmauss

12:00--12:15

(c12a559)

Oral 2-2G-4

Optical Signal to Noise Ratio Monitoring Using a Noval Optical Notch Filtering Scheme

Yi Yu, Jing Yang, Changyuan Yu

12:15--12:30

(c12a449)

Oral 2-2G-5

Impact of Local Storages on Performance of PONs

Sandu Abeywickrama, Elaine Wong

Room Virgo 4

Session Name: Quantum cascade lasers II

Session Chair: Carlo Sirtori

10:45--11:15

(c12a754) Invited

Oral 2-2H-1

Room-temeprature THz quantum cascade laser sources

Mikhail Belkin, Karun Vijayraghavan, Frederic Demmerle, Min Jang, Aiting Jiang, Christian Grasse,

Markus-Christian Amann

11:15--11:45

(c12a706) Invited

Oral 2-2H-2

Mode-locking of terahertz quantum cascade lasers

Joshua Freeman

11:45--12:00

(c12a517)

Oral 2-2H-3

Single-mode narrow beam divergence surface-emitting concentric-circular-grating terahertz quantum

cascade lasers

Guozhen Liang, Houkun Liang, Qi Jie Wang

12:00--12:15

(c12a389)

Oral 2-2H-4

Study of Design-Dependent Electroluminescence Linewidth of Quantum Cascade Lasers

Rafatul Faria, Orchi Hassan, Fariah Hayee, Md. Shahadat Hasan Sohel, Asif Ahmed, Muhammad

Anisuzzaman Talukder

12:15--12:30

(c12a543)

Oral 2-2H-5 (cancelled)

Mid-infrared Bessel Beams Generation by Subwavelength Structure on Quantum Cascade Laser

Jin Tao

12:30--12:45

(c12a387)

Oral 2-2H-6

Quantum Cascade Laser Wavelength Tuning due to Temperature-Dependent Index of Refraction

Asif Ahmed, Orchi Hassan, Md. Sohel, Fariah Hayee, Rafatul Faria, Muhammad Talukder

Session 2-3 (Date: 15.12.2012)

Room Pisces 1

Session Name: Nanodevices and Biosensors

Session Chair: Kiyoshi Asakawa

14:00--14:30

(c12a311) Invited

Oral 2-3A-1

Technologies for developing Next-generation of Diagnostics

Sandeep Kumar Vashist


PGC2012


14:30--15:00

(c12a318) Invited

Oral 2-3A-2

Lanthanide-Doped Nanoparticles for Applications in Biology

Fiorenzo Vetrone

15:00--15:30

(c12a411) Invited

Oral 2-3A-3

Surface electromagnetic waves in a graphene-based Bragg grating for biosensing applications

Ting Yu

15:30--15:45

(c12a471)

Oral 2-3A-4

A model of an optical biosensor detecting environment

Phan Anh D., Trasy Dustin A., Viet Nguyen Ai

Room Pisces 2

Session Name: Bioimaging and Sensing III

Session Chair: Alexander Jesacher

14:00--14:30

(c12a802) Invited

Oral 2-3B-1

Bioimaging and Sensing with Novel SERS Techniques

Dinish U. S., Malini Olivo

14:30--15:00

(c12a566) Invited

Oral 2-3B-2

Laser-based Optical Bio-imaging Platforms – From Protein Dynamics in a Monolayer to Bulk

Chemical Changes in a Living Fat Cell

Jonathan Hobley

15:00--15:30

(c12a295) Invited

Oral 2-3B-3

Solid State Enhanced Emission of Organic Molecules for Bio-Imaging

Hyong-Jun Kim

15:30--15:45

(c12a664)

Oral 2-3B-4

Ultrasensitive low-cost solution to contamination detection in air and water

Vladislav Yakovlev

Room Pisces 3

Session Name: Optoelectronic Devices

Session Chair: Boon S. Ooi

14:00--14:30

(c12a764) Invited

Oral 2-3C-1

Epitaxially Re-grown Photonic Crystal Surface Emitting Lasers

Richard Hogg

14:30--15:00

(c12a741) Invited

Oral 2-3C-2

Intersubband Transition-Based Devices in AlGaN/GaN Heterostructures

Gad Bahir

15:00--15:15

(c12a367)

Oral 2-3C-3

1.55 µm InAs/GaAs Quantum Dots and High Repetition Rate Quantum Dot SESAM Mode-locked

Laser

Z.Y. Zhang

15:15--15:30

(c12a529)

Oral 2-3C-4

Influence of Vertical Coupling on the Lasing Operation of Quantum-Dash Laser

Mohammed Zahed Mustafa Khan, Tien Khee Ng, Boon S. Ooi

15:30--15:45

(c12a628)

Oral 2-3C-5

Dynamics and Modulation Characteristics of Graphene Nanoribbon Array Lasers

Guangcun Shan, Chan-Hung Shek, Xinghai Zhao

Room Pisces 4

Session Name: Optical Fibre Technology III

Session Chair: Raman Kashyap

14:00--14:30

(c12a752) Invited

Oral 2-3D-1

Fiber grating based tunable devices for optical communications


PGC2012


Xuewen Shu

14:30--15:00

(c12a396) Invited

Oral 2-3D-2

Ultra-broadband photonic transport system

Hideyuki Sotobayashi

15:00--15:15

(c12a683)

Oral 2-3D-3

A spectral effective transmission beyond a baseband of the multimode fiber

Marcin Kowalczyk

15:15--15:30

(c12a405)

Oral 2-3D-4

Enhancing dynamic extinction ratio of a fiber-based seed source

Yasuhiro Kamba, Yuki Wada, Kazuyoku Tei, Shigeru Yamaguchi, Jun Enokidani, Shin Sumida

15:30--15:45

(c12a399)

Oral 2-3D-5

Compression of picosecond pulses with a chirped volume Bragg grating

Atsushi Taketomi, Kazuyoku Tei, Shigeru Yamaguchi, Shin Sumida, Jun Enokidani

Room Virgo 1

Session Name: Workshop on Disruptive Photonic Technologies III

Session Chair: Zexiang Shen

14:00--15:00

(c12a738) Invited

Oral 2-3E-1

Photonic circuits for the new information age: Faster, smaller and smarter

Benjamin Eggleton

15:00--16:00

(c12a781) Invited

Oral 2-3E-2

The Impact of Nonlocal Response in Plasmonic Metamaterials

David Smith, C. Ciracì, Y. Urzhumov

Room Virgo 2

Session Name: Workshop on Fabrication of Special Fibres and Applications III

Session Chair: Kantisara Pita

14:00--14:30

(c12a343) Invited

Oral 2-3F-1

Molten Core Fabrication of Specialty Optical Fiber: Merits and Marvels (and Occasional Misfits)

John Ballato

14:30--15:00

(c12a774) Invited

Oral 2-3F-2

Rare earth doped optical fiber fabrication by the granulated silica method

Valerio Romano, Dereje Etissa, Manuel Ryser, Soenke Pilz

15:00--15:30

(c12a325) Invited

Oral 2-3F-3

Focus on glass-powder method for the fabrication of specialty optical fibres

Georges Humbert

15:30--16:00

(c12a474) Invited

Oral 2-3F-4

Optical materials for active fibers made by powder-in-tube method

Sergey Semjonov

Room Virgo 3

Session Name: Optical Transmission II

Session Chair: Yong Liu

14:00--14:30

(c12a744) Invited

Oral 2-3G-1

Comparison of Various Bandwidth-Efficient LDPC coding schemes for Tb/s Superchannel Long-haul

Transmission

Qi Yang

14:30--15:00

(c12a304) Invited

Oral 2-3G-2

Optical Monitoring of Optical OFDM Signals in Bandwidth-Flexible Optical Transport Networks

Calvin C K Chan, Kam-Hon Tse


PGC2012


15:00--15:30

(c12a747) Invited

Oral 2-3G-3

Polarization Considerations for Amplitude Regeneration in a Fiber Optical Parametric Amplifier

Chester Shu, Xiaojie Guo, Gordon K. P. Lei, Xuelei Fu, Hon Ki Tsang

15:30--15:45

(c12a647)

Oral 2-3G-4

LED-camera communication system with RGB coding

Junhao Hu, Changyuan Yu, Yuen Sam Kwok, Francois Chin

Room Virgo 4

Session Name: Mid-IR and THz Waveguides

Session Chair: Jing Hua Teng

14:00--14:30

(c12a634) Invited

Oral 2-3H-1

Chalcogenide microstructured optical fibers

Johann Troles, Laurent Brilland

14:30--15:00

(c12a356) Invited

Oral 2-3H-2

A Field Deployable Compound Specific Isotope Analyzer based on Quantum Cascade Laser and

Hollow Waveguide

Andrei Deev, Jie Wei

15:00--15:30

(c12a324) Invited

Oral 2-3H-3

Design of Low-loss THz Waveguides and Devices by using the Finite Element method

Azizur Rahman

15:30--15:45

(c12a409)

Oral 2-3H-4

Theoretical investigation on low-loss IR-transmitting hollow-core metallic fiber with double cladding

Meng Zhang, Xia Yu, Ping Shum, Wu Yuan

Poster Session II (Date: 15.12.2012)

P2-01

(c12a466) Light Through Nanohole Arrays with Defects (cancelled)

Xiaoxiao Jiang, Qiongchan Gu, Hailong Liu, Jiangtao Lv, Song Cao, Guangyuan Si, Hongjun Duan,

Zhenhe Ma

P2-02

(c12a553) Measuring Photodarkening from Ytterbium-doped Fiber Amplifier at 1064 nm Wavelength

Emission

Nanxi Li, Seongwoo Yoo, Jin Xue, Xia Yu, Ping Shum

P2-03

(c12a666) Efficient Bending of Surface Plasmonics through a Sharp Corner

Hongyi Xu, Su Xu, Hongsheng Chen, Handong Sun, Baile Zhang

P2-04

(c12a366) Controlling Light Through Double-Ring Arrays

Xiaoxiao Jiang, Qiongchan Gu, Hailong Liu, Jiangtao Lv, Song Cao, Guangyuan Si, Hongjun Dun,

Ning Xiang, Aaron Danner

P2-05

(c12a468) Exciton-phonon Coupling in Individual ZnTe Nanorods Studied by Resonant Raman

Spectroscopy

Qing Zhang, Qihua Xiong

P2-06

(c12a555) Comprehensive Experimental Study to Develop Nanoparticle Based Optical Fiber Humidity

Sensor with Linear Response over Large Dynamic Range

Sunil Khijwania

P2-07

(c12a671) Structural Design of Microwave Photonic Filter based on Adaptive Genetic Algorithm with

Disturbance Operation

Xiangnong Wu, Ye Yin, Jing Zhang, Qian Ni

P2-08

(c12a368) Adjustable EDFA Gain Equalization Filter for Future DWDM Networks Based on a single LPG

excited by Flexural Acoustic Waves (cancelled)

Carlos Marques, Roberson Oliveira, Alexandre Pohl, Rogério Nogueira

P2-09

(c12a469) Two-photon Lasing Threshold Reduced by Phonon-assisted Anti-Stokes Emission in

Semiconductors

Qihua Xiong

P2-10

(c12a557) Optical Properties of Nanorods on Si Substrate

Kyohei Nakagawa

P2-11 Fabrication of F-ion Implanted Quantum Well Intermixed Waveguide Grating


PGC2012


(c12a675) Ramesh Kumar Sonkar, Utpal Das

P2-12

(c12a370) Controlling the Properties of Microstructured Plastic Optical Fiber Bragg Gratings using

Acousto-Optic Excitation

Carlos Marques, Lucia Bilro, L. Khan, Roberson Oliveira, David Webb, Rogério Nogueira

P2-13

(c12a470) Silicon Photomultiplier with Lateral Bulk-Si Quenching Resistors

Fei Sun, Ning Duan, Guo-Qiang Lo

P2-14

(c12a573) Underwater Communication System For Deep Sea Divers Using Visible Light

Ashish Kumar Das, A. M. Vibin, Shanthi Prince, Arpita Ghosh

P2-15

(c12a678) Modeling and Experimental Analysis of Wide-Band Flat-Gain Amplifier Utilizing High

Concentration of EDFA

Belal Hamida, Khan Sheroz, Ahmed Naji, Wajdi AL-Khateeb, Harith Ahmad, Sulaiman Huran

P2-16

(c12a373) Fluorescence nanodiamond for optical and photoacoustic imaging applications

Bailin Zhang

P2-17

(c12a473) Optimized Sandwiched Surface Plasmon Resonance Enhanced Biosensor for Multiplex

Biomarker Detection

Tianxun Gong, U. S. Dinish, Shuwen Zeng, Malini Olivo, Ken-Tye Yong

P2-18

(c12a583) Reconfigurable Compact Silicon Based Optical Cross-Connect with Slow-Light Photonic

Crystals (cancelled)

Mathew Zablocki, Michael Roman, Dennis Prather, Ahmed Sharkawy

P2-19

(c12a679) Optical Trapping with Low Numerical Aperture Objective Lens

Raktim Dasgupta

P2-20

(c12a376) Modeling of Photonic Crystal Fibers with circular and elliptical air holes arranged in Fibonacci

series manner (cancelled)

Ghanshyam Singh

P2-21

(c12a475) Simultaneous measurement of curvature and temperature based on two waist-enlarged fiber

tapers and a fiber Bragg grating

Qingqiang Meng, Xinyong Dong, Zhemin Chen, Ni Kai

P2-22

(c12a584) Improvement the Dynamic Response of QDSOA-MZI-based Optical Logic Gates

Hussein Taleb, Kambiz Abedi

P2-23

(c12a681) Dispersive Transparency in Metamaterials using Conductively Coupled Resonator Scheme

Shuvan Prashant Turaga, Sudheer Kumar Vanga, Yuanjun Yan, Andrew Anthony Bettiol

P2-24

(c12a378) A Fluorescence Fiber Temperature Detection System Based on the Lifting-Wavelet

Zhenpu Gu

P2-25

(c12a795) Self-detached TiO2 nanotube array membranes for application in dye-sensitized solar cells

Jia Lin, Xianfeng Chen, Haitao Huang

Session 2-4 (Date: 15.12.2012)

Room Pisces 1

Session Name: Nanophotonics

Session Chair: Sebastian Lourdudoss

16:15--16:45

(c12a602) Invited

Oral 2-4A-1

Advancement of photonic crystal, quantum dot and surface plasmon technologies to ultrafast optical

switching, medical imaging and mobile sensing applications

Kiyoshi Asakawa

16:45--17:15

(c12a335) Invited

Oral 2-4A-2

Study of fundamental properties of synthesized gold nanoparticles using multifunctional reducing

agent for Arsenic removal

Amit Kumar Sharma, Soni Shankhwar, Mulayam Singh Gaur

17:15--17:30

(c12a702)

Oral 2-4A-3

Optical Deposition of Nano Carbon Materials for Fiber-based Saturable Absorbers

Ye Yang, Huan Huan Liu, Kin Kee Chow

17:30--17:45

(c12a502)

Oral 2-4A-4

Effect of material loss on the energy transportation along the metallic nanovoid/nanoparticle chain

structures

Dongdong Li, Dao Hua Zhang, Yueke Wang, Zhengji Xu, Jun Wang, Fei Qin, Wenjuan Wang

17:45--18:00 Oral 2-4A-5


PGC2012


(c12a560) Dynamics of extremely high-repetition-rate Yb:YAG self-mode-locked lasers

K. W. Su, W. Z. Zhuang, G. W. Huang, Yi-Fan Chen, Y. F. Chen

18:00--18:15

(c12a769)

Oral 2-4A-6

Graphene induced optical modulation on side polished fiber

Kan Wu, Yu Wang, Kian Ping Loh, Ping Shum

Room Pisces 2

Session Name: Bioimaging and Sensing IV

Session Chair: Emily Hao

16:15--16:45

(c12a594) Invited

Oral 2-4B-1

Active optical elements – helpful tools in light microscopy

Alexander Jesacher, Monika Ritsch-Marte

16:45--17:00

(c12a645)

Oral 2-4B-2

Structured illumination based wide-field fluorescence microscopy systems development for 3D tissue

imaging

Vijay Raj Singh

17:00--17:30

(c12a554) Invited

Oral 2-4B-3

Whispering gallery mode microresonators for biomolecular sensing and spectroscopy

Wilson Kerry

17:30--18:00

(c12a799) Invited

Oral 2-4B-4

Dual-Faced Nano-Mushrooms for Tri-functional Cell Diagnosis: SEARs/Fluorescence Signaling,

Immune Targeting, and Drug Delivering

Fan-Gang Tseng, Hsin-Yi Hsieh, Chau-Hwang Lee

Room Pisces 3

Session Name: Photonic Crystal and Metamaterials

Session Chair: Michael Fiddy

16:15--16:45

(c12a788) Invited Oral 2-4C-1

Plasmonic trapping in nano-scale metallic structures for SERS and microfluidic applications

H. P. Ho, Q. W. Kang, H. F. Lu, H. X. Zhang, J. J. Chen

16:45--17:00

(c12a493)

Oral 2-4C-2

Optimization of the photonic crystal fiber by using genetic algorithms

Jyun-Hong Lu, Chii-Chang Chen

17:00--17:15

(c12a488)

Oral 2-4C-3

Magnetobiexciton in three layers graphene and its effects on graphene optical properties

Chu Thuy Anh, Vo Thi Hoa, Nguyen Tri Lan, Nguyen Ai Viet

17:15--17:30

(c12a657)

Oral 2-4C-4

Silicon-Porous Silicon based photonic crystals

Zhiya Dang

17:30--17:45

(c12a570)

Oral 2-4C-5

Bound-to-Continuum Transition in GaAs/AlGaAs QWIP

Mukul Kumar Das, Md. Aref Billaha

Room Pisces 4

Session Name: Optical Fibre Technology and Applications

Session Chair: Xuewen Shu

16:15--16:45

(c12a772) Invited

Oral 2-4D-1

Volume Bragg grating controlled fiber lasers

Peter Zeil, Fredrik Laurell

16:45--17:00

(c12a455)

Oral 2-4D-2

Accurate Determination of Initial Value of Theoretical Evaluation of Rare Earth Doped Fiber Lasers

with High Reflectance

Fatemeh Kazemizadeh, Fatemeh Shahshahani

17:00--17:15 Oral 2-4D-3


PGC2012


(c12a345) Analysis and Application of Scalable Non-linear Equalization in 112Gbit/s DP-64QAM Coherent

Transmission over Single Mode Fibers

Rameez Asif, Muhammad Khawar Islam, Muhammad Zafrullah

17:15--17:30

(c12a589)

Oral 2-4D-4

Single mode realization of low loss liquid filled birefringent photonic crystal fibers (PCFs)

Partha Maji, Partha Roychaudhuri

17:30--18:00

(c12a619) Invited

Oral 2-4D-5

Similariton Lasers and Oscillators

John Harvey, Vladimir Kruglov

Room Virgo 1

Session Name: Plasmonics and Metamaterials I

Session Chair: Tahsin Akalin

16:15--16:45

(c12a700) Invited

Oral 2-4E-1

ENZ Plasmonics and Optical Metatronics

Nader Engheta

16:45--17:15

(c12a408) Invited

Oral 2-4E-2

Carbon Nanotube and Graphene for Photonic and Optoelectronic Applications

Shinji Yamashita

17:15--17:30

(c12a687)

Oral 2-4E-3

Bowtie Nanoantennas with Void Defects

Kebo He, Ji Chen, Zhaoyu Zhang

17:30--17:45

(c12a654)

Oral 2-4E-4

Optical Fiber Tip: Nanotweezer, Nanoantenna and Plasmonic Hotspot

Samir Mondal, Sudipta Sarkar Pal, Pawan Kapur

17:45--18:00

(c12a673)

Oral 2-4E-5

Plasmon-Modulated Photoluminescence of Individual Gold Nanostructures

Hailong Hu , Huigao Duan, Joel K. W. Yang, Ze Xiang Shen

Room Virgo 2

Session Name: Workshop on Fabrication of Special Fibres and Applications IV

Session Chair: Kyounghwan (Ken) Oh

16:15--16:45

(c12a753) Invited

Oral 2-4F-1

New flexible techniques for ultra-stable ultra-short pulse generation using stimulated Brillouin

scattering

Raman Kashyap, Victor Lambin Iezzi, Sebastien Loranger

16:45--17:15

(c12a770) Invited

Oral 2-4F-2

Electrical fiber components and applications

Walter Margulis, Mikael Malmström, Oleksandr Tarasenko, Zhangwei Yu, Patrik Rugeland

17:15--17:45

Panel Discussion

Expanding fiber functionality in the spectral, modal and spatial domain, which would be most viable?

Room Virgo 3

Session Name: Optical Devices

Session Chair: Nan Chi

16:15--16:45

(c12a717) Invited

Oral 2-4G-1

PICs for Advanced Communications Systems

Jinyu Mo

16:45--17:15

(c12a551) Invited

Oral 2-4G-2

OFDMA-PON for Next Generation Access Networks

John Senior

17:15--17:30 Oral 2-4G-3


PGC2012


(c12a448) Photonic Services for Real-time Applications

Josef Vojtech, Vladimir Smotlacha, Pavel Skoda, Stanislav Sima, Jan Radil, Miloslav Hula

17:30--17:45

(c12a483)

Oral 2-4G-4

Long-Range Distributed Brillouin Fiber Sensor Using Single-Sideband Modulation and in-line

Bidirectional EDFA

Duc Minh Nguyen, Birgit Stiller, Jean-Charles Beugnot, Hervé Maillotte, Mottet Alexandre, Jerome

Hauden

17:45--18:00

(c12a665)

Oral 2-4G-5

Design of a Silicon-Plasmonic Hybrid Electro-Optic Modulator

Mu Xu, Jiayang Wu, Zhiming Zhuang, Fei Li, Tao Wang, Linjie Zhou, Yikai Su

Room Virgo 4

Session Name: Mid-IR and THz Applications

Session Chair: Johann Troles

16:15--16:45

(c12a707) Invited

Oral 2-4H-1

Intense infrared single cycle laser pulses for table-top ultrafast X-ray science

Francois Legare

16:45--17:15

(c12a676) Invited

Oral 2-4H-2

Terahertz spectroscopy and imaging based on ultrashort pulse laser

Wen-Hui Fan

17:15--17:30

(c12a514)

Oral 2-4H-3

High Performance GaSb/InAs Superlattice Long-Wave Infrared Focal Plane Array

Sarath Gunapala

17:30--17:45

(c12a588)

Oral 2-4H-4

High-Q Fluoride Glass Microresonators for Mid-Infrared Photonics Applications

Ravi Jain

17:45--18:00

(c12a695)

Oral 2-4H-5

Infrared photoluminescence from Si/Ge nanowire grown Si wafers

Seref Kalem

18:00--18:15

(c12a380)

Oral 2-4H-6

Gain Recovery Dynamics of Quantum Cascade Lasers

Muhammad Talukder

Session 3-1 (Date: 16.12.2012)

Room Pisces 1

Session Name: Integrated and Guided-Wave Optics

Session Chair: Jinghua Teng

8:30--9:00

(c12a459) Invited

Oral 3-1A-1

Integrated optic devices for entangled photon pair generation

Krishna Thyagarajan

9:00--9:15

(c12a361)

Oral 3-1A-2

On a pragmatic approach optical analogues of gravitational attractors

Damian San-Roman-Alerigi, Ahmed Ben Slimane, Tien Khee Ng, Mohammad Alsunaidi, Boon S. Ooi

9:15--9:30

(c12a437)

Oral 3-1A-3

High performance SiN waveguide optical devices platform

Xiaoguang Tu, Junfeng Song, Xianshu Luo, Tsung-Yang Liow, Mingbin Yu, Guoqiang Lo

9:30--9:45

(c12a453)

Oral 3-1A-4

Tailored Resonance Dependence on Input Optical Power in Silicon Microring Resonators

Lian Wee Luo, Gustavo Wiederhecker, Kyle Preston, Michal Lipson

9:45--10:00

(c12a548)

Oral 3-1A-5

Gain Stabilization of Quantum-Dot Semiconductor Optical Amplifier by Introducing Tapered

Waveguide Structure

Kambiz Abedi, Ehsan Mohadesrad

Room Pisces 2

Session Name: Bioimaging and Sensing V

Session Chair: Jonathan Hobley


PGC2012


8:30--9:00

(c12a303) Invited

Oral 3-1B-1

Second Harmonic nanocrystals for in-vivo optical imaging

Ronan Le Dantec , Luigi Bonacina

9:00--9:30

(c12a305) Invited

Oral 3-1B-2

An Open-microcavity Biosensor with Photonic-Crystal Structure for Detection of Cardiac Biomarkers

Bailin Zhang

9:30--9:45

(c12a505)

Oral 3-1B-3

Optimized Bi-Metallic Film Over Nanosphere SERS Substrate for Sensitive Detection of Folic Acid

Douglas Goh, U. S. Dinish , Malini Olivo

9:45--10:15

(c12a306) Invited

Oral 3-1B-4

Visible to Near-Infrared Lanthanide Emission for Molecular Imaging

Ka-Leung Wong

Room Pisces 3

Session Name: Light Scattering and Absorption

Session Chair: Larry Yuan

8:30--9:00

(c12a299) Invited

Oral 3-1C-1

Application of the Resonance Light Scattering for investigation of the mechanisms of biological action

of photosensitizers: psoralen, merocuanine 540

Alexander Potapenko, Tatiana Shmigol, Ilia Pyatnitskiy, Mikhail Malakhov

9:00--9:30

(c12a353) Invited

Oral 3-1C-2

Photovoltaic-thermoelectric Hybrid Solar Energy Harvesting Based On Silicon Nanowires

Gang Zhang

9:30--10:00

(c12a608) Invited

Oral 3-1C-3

Three Dimensional Photonic and Biophotonic Devices

Ajoy Kar

10:00--10:15

(c12a662)

Oral 3-1C-4

Light Scattering Efficiency of Oil Smoke Seeding Droplets in PIV Systems

Rami Zakaria, Peter Bryanston-Cross

Room Pisces 4

Session Name: Optical Fibre Grating Sensnors

Session Chair: Bai-Ou Guan

8:30--9:00

(c12a326) Invited

Oral 3-1D-1

Optical Fiber Grating based Technologies and Their Applications: from Nuclear Fusion to Medical

Lun-Kai Cheng, Willem Vliegenthart, Tobias Habisreuther

9:00--9:30

(c12a341) Invited

Oral 3-1D-2

Optical Fibre Sensors for Structural Health Monitoring

Tong Sun, Kenneth Grattan

9:30--10:00

(c12a656) Invited

Oral 3-1D-3

A Robust Perimeter Intrusion Detection System Using Fiber Bragg Grating Sensors

Jianzhong Hao

10:00--10:30

(c12a632) Invited

Oral 3-1D-4

Intra-cavity Multi-FBG Sensing system Based on Fiber Laser

Yunxu Sun

Room Virgo 1

Session Name: Plasmonics and Metamaterials II

Session Chair: Nader Engheta


PGC2012


8:30--9:00

(c12a314) Invited

Oral 3-1E-1

THz metamaterials and waveguides based on polymers

Alexander Argyros

9:00--9:30

(c12a490) Invited

Oral 3-1E-2

Manipulation of Optical Vortices using Spiral Nanoslots

Eng Huat Khoo

9:30--9:45

(c12a398)

Oral 3-1E-3

Experimental demonstration of integrated horizontal Cu-Si3N4-Cu plasmonic waveguide and passive

components

Shiyang Zhu

9:45--10:00

(c12a512)

Oral 3-1E-4

Fabrication and optical evaluation of 1D and 2D photonic metamaterial crystal

Shimpei Tanabe, Yoshinori Nakagawa, Toshihiro Okamoto , Masanobu Haraguchi, Toshiro Isu,

Genichi Shinomiya

10:00--10:15

(c12a585)

Oral 3-1E-5

Simulation of Optical Transmission Enhancements for the Silver Nanoparticles Embedded in the

Silica Layer atop the Silicon Substrate

Hung-Ying Yang, Jia-Han Li

Room Virgo 2

Session Name: Fibre Lasers and Applications I

Session Chair: John Harvey

8:30--9:00

(c12a328) Invited

Oral 3-1F-1

Advanced Optical Fibers and Their Applications in Fiber Lasers

Dong Liang, Kunimasa Saitoh, Fanting Kong, Thomas Hawkins, Devon Mcclane, Guancheng Gu

9:00--9:30

(c12a445) Invited

Oral 3-1F-2

Graphite and Charcoal Nano-Particles Induced Saturable Absorption for Passively Mode-Locking the

Erbium Doped Fiber Lasers

Gong-Ru Lin, Yung-Hsiang Lin

9:30--10:00

(c12a778) Invited

Oral 3-1F-3

Ho-doped fluoride fibres for mid-infrared radiation emission

Stuart Jackson

10:00--10:15

(c12a527)

Oral 3-1F-4

All-fiber all-normal-dispersion passively mode-locked Yb-doped ring laser based on graphene oxide

Xiaohui Li

10:15--10:30

(c12a521)

Oral 3-1F-5

Generation of Femtosecond Pulses Using Actively Mode-Locked Fiber Ring Laser

Dang Trang Nguyen, Teruo Muramatsu, Akihiro Morimoto

Room Virgo 3

Session Name: Optical System and Devices

Session Chair: Andrey Sukhorukov

8:30--9:00

(c12a746) Invited

Oral 3-1G-1

Multi-channel multi-carrier generation using multi-wavelength frequency shifting recirculating loop

Nan Chi

9:00--9:30

(c12a327) Invited

Oral 3-1G-2

Fast Random Bit Generation Using Oversampled Optical Chaos

Xiao-Zhou Li, Sze-Chun Chan

9:30--9:45

(c12a672)

Oral 3-1G-3

Nested Silicon Microring Resonator with Multiple Coupling Regimes

Jiayang Wu, Zhiming Zhuang, Mu Xu, Pan Cao, Xinhong Jiang, Linjie Zhou, Yikai Su


PGC2012


9:45--10:00

(c12a539)

Oral 3-1G-4

InSb1-xNx alloys on GaSb substrate by MOCVD for long wavelength detection

Yunjiang Jin, Daohua Zhang, Xiaohong Tang, Jinhua Teng

Room Virgo 4

Session Name: Postgraduate Student Conference (PGSC) Keynote Session

8:30--8:45 Opening Ceremony

8:45--9:30 Keynote Speaker Surviving in Science: what they don’t tell you about careers in research!

Prof. John Dudley

CNRS FEMTO-ST, France

9:30--10:15 Keynote Speaker Applications of Optical Fibers to Healthcare and Biophotonics Research

Prof. Gerd Keiser

PhotonicsComm Solutions, Inc., USA

Poster Session III (Date: 16.12.2012)

P3-01

(c12a586) GRIN-like Thin Dielectric Slab Lens through Effective Index Engineering

Henrik Melkonyan, Marcus S. Dahlem

P3-02

(c12a682) Numerical Fitting of Ionization Coefficients for APDs based on Ternary Materials

Mamun Rabbani, Dipta Majumder, Farseem Mannan Mohammedy

P3-03

(c12a381) Dispersion-flattened transmission based on liquid-crystal-coated plasmonic subwavelength

structures

Yanjun Liu, Guangyuan Si, Eunce S. P. Leong, Jinghua Teng

P3-04

(c12a479) A microfabricated fibre optic sensor for methane gas measurement in underground coal mines

Mohammad Amanzadeh, Saiied M. Aminossadati, Mehmet S. Kizil, Eion Sheridan, Warwick P. Bowen

P3-05

(c12a684) Cost Evaluation Analysis for Next Generation Home Network Using Optical Fiber

Shota Shimazaki, Dai Hanawa, Kimio Oguchi

P3-06

(c12a787) Enhancement of Refractive Index Sensitivity for Rectangular-microfiber Sagnac Loop Sensors

Jie Li, Lipeng Sun, Yang Ran, Bai-ou Guan

P3-07

(c12a390) Microbubble-Enabled Photonic Crystal Fiber-based Sensors

Jun Long Lim, Dora Juan Juan Hu, Perry Ping Shum, Yixin Wang, Emily Jianzhong Hao

P3-08

(c12a481) Photonic crystals in proton-exchanged LiNbO3 waveguides for photonic applications

Jun Deng, Wei Jia, Ching Eng Png, Aaron James Danner

P3-09

(c12a487) Metal-enhanced fluorescence in liposomes for photothermal studies

Elizabeth Mei Yin Lee, Derrick Yong, Xia Yu, Chan Chi Chiu

P3-10

(c12a685) Particle Swarm Optimization Algorithm for Enhancing the Performance of Light Property and

Optical Buffer with Bragg-Like Corrugation Ring-Shape-Hole Photonic Crystal Waveguide

Seyed Mohammad Mirjalili, Kambiz Abedi, Seyedali Mirjalili

P3-11

(c12a395) Research on the FBG’s High Temperature Sustainability Influenced by the Drawing Process

Shuqiang Zhang, Tu Feng

P3-12

(c12a491) Fabrication of Optical Fiber Gratings through Focused Ion Beam Techniques for Sensing

Applications

Jin Huang, Ammar Alqahtani, Jaime Viegas, Marcus Dahlem

P3-13

(c12a591) An Experimental Study on the Luminescence Effects of POF-based Flexible Textile Using

Different Methods of Weaving and Electronic Packaging

Jin-Hee Yang, Joo-Hyeon Lee, Hyeon-Seong Cho, Sun-Hyung Park, Seon-ah Khang

P3-14

(c12a719) Performance Monitoring of Silicon Avalanche Photodiode for Time-resolved Measurement of

Diffused Light over Temperature

Ali Hasnain

P3-15

(c12a402) Analysis of ultracompact silicon electro-optic modulator based on Cu-insulator-Si hybrid

plasmonic donut resonator

Shiyang Zhu

P3-16

(c12a497) Silicon Avalanche Photodiode Array Fabrication for Imaging Application

Tok Chee Wei

P3-17 Impact of Silicon Nonlinearities on the Performance of Integrated Electronic-Photonic Analog-


http://www.photonicsglobal.org/admin/paperload.php?paperId=499

PGC2012


(c12a593) to-Digital Converters

Anatol Khilo, Franz Kaertner

P3-18

(c12a412) Incoherent Soliton Fission Driven Supercontinuum Generation Pumped by Partially Coherent

Light

Edmund Kelleher, Miro Erkintalo, John Travers

P3-19

(c12a501) Detection of Bladder Cancer related DNA Biomarkers Using Silicon Microring Resonators

Yong Shin, Promoda Perera, Kyung Woo Kim, Mi Kyoung Park

P3-20

(c12a597) A New Tunable Photonic Crystal Electro-optic Device

Kambiz Abedi, Pooria Ghasemi

P3-21

(c12a415) Multiplexing of LPFG Resonant Wavelengths for Abnormal Reaction Detection in Large-Scale

Plants by Distributed High Temperature Monitoring

Yutaka Katsuyama, Saburo Kasahara, Yutaka Tokunaga, Osanori Koyama

P3-22

(c12a503) Characteristics of Suspended-Core Fiber Interferometer: Modal Analysis

Jun Long Lim, Dora Juan Juan Hu, Dongyao Cui, Seongwoo Yoo, Perry Ping Shum, Wei Loh

P3-23

(c12a606) Gold Nanoparticles Enhanced Fluorescence in Organic Lighting Emission Diodes

Bo Liu, Kou Chen Liu, Huang Qi Xiao, Cheng Han Wu, Chao Sung Lai

P3-24

(c12a787) Buffer-Based Dynamic Provisioning for Sliding Bulk Transfer Requests in WDM Optical

Networks

Min Zhu, Wen-De Zhong, Shilin Xiao

Session 3-2 (Date: 16.12.2012)

Room Pisces 1

Session Name: Semiconductors and Optoelectronic Devices III

Session Chair: Aiqun Liu

10:45--11:15

(c12a330) Invited

Oral 3-2A-1

III-V Nanowires Grown by MOCVD for Optoelectronic Applications

Hark Hoe Tan

11:15--11:45

(c12a663) Invited

Oral 3-2A-2

Random Raman Lasing

Vladislav Yakovlev

11:45--12:00

(c12a316)

Oral 3-2A-3

Semitransparent metal-free large area organic solar module by spray

Evan Lafalce, Patrick Toglia, Xiaomei Jiang

12:00--12:15

(c12a688)

Oral 3-2A-4

All-Polymer Electro-Optic Switch

M. Balasubramanian, Rahul Singhal

12:15--12:30

(c12a567)

Oral 3-2A-5

Ge-content Dependent Efficiency of Si/SiGe Heterojunction Solar cell

Mukul Kumar Das, Santosh Kumar Choudhary

Room Pisces 2

Session Name: Emerging Applications and Devices

Session Chair: Hon Tsang

10:45--11:15

(c12a607) Invited

Oral 3-2B-1

Mid-infrared silicon photonics devices

Goran Mashanovich, Milos Nedeljkovic, Milan Milosevic, Marc Sorel, Thomas Krauss, Anna

Peacock, Harold Chong, Graham Reed

11:15--11:45

(c12a711) Invited

Oral 3-2B-2

Applications of plasmonics in silicon-based photonics

Robert Kelsall

11:45—12:15

(c12a782) Invited

Oral 3-2B-3

High Contrast Long-Period Waveguide Gratings on Silicon-on-Insulator (SOI) Substrate

Ricky W. Chuang, Guo-Shian Wang, Mao-Teng Hsu


PGC2012


12:15--12:30

(c12a404)

Oral 3-2B-4

Plasma activation assisted low-temperature direct wafer bonding

Hongyao Chua, Xianshu Luo, Wai Hong See Toh, Junfeng Song, Tsung-Yang Liow, Mingbin Yu, Guo-

Qiang Lo

Room Pisces 3

Session Name: Photonic Devices

Session Chair: Richard Hogg

10:45--11:15

(c12a581) Invited

Oral 3-2C-1

Slow-light enhanced optomechanical interactions in nano-beam waveguides

Andrey Sukhorukov

11:15--11:45

(c12a322) Invited

Oral 3-2C-2

Silicon Photonics

Michal Lipson

11:45--12:15

(c12a749) Invited

Oral 3-2C-3

Using nanoscale building blocks to make electronic and photonic devices

Rosei Federico

12:15--12:30

(c12a731)

Oral 3-2C-4

Whispering Gallery Mode Excitation and Collection using Fused-Tapered Fiber Tips

Di Zhu, Yanyan Zhou, Xia Yu, Ping Shum, Feng Luan

Room Pisces 4

Session Name: Optical Fibre Grating Technology

Session Chair: Tong Sun

10:45--11:15

(c12a600) Invited

Oral 3-2D-1

Calibration of a phase-shift formed in a linearly chirped fiber Bragg grating and its application to

environmental parameters sensor

Hongpu Li

11:15--11:45

(c12a689) Invited

Oral 3-2D-2

Researches of the Physical Mechanics of CO2-Laser Written Long-Period Fiber Gratings

Yunqi Liu

11:45--12:00

(c12a406)

Oral 3-2D-3

Refractometer Based on Tilted Fiber Bragg Grating Incorporating With Waist-Enlarged Fusion

Bitaper

Jie Zheng, Xinyong Dong, Pengbing Hu, Shuqin Zhang, Shangzhong Jin, Perry Ping Shum

12:00--12:15

(c12a336)

Oral 3-2D-4

Sensitivity of Horizontal Positioned FBG Sensor in a Cylindrical FBG Load cell for Cable

Prestressing Monitoring Applications

Vasagavijayan Sinivasagam

12:15--12:30

(c12a534)

Oral 3-2D-5

Implementation of Optical CDMA based on Passive Optical Networks

Tawfig Eltaif, Hesham Bakarman

12:30--12:45

(c12a668)

Oral 3-2D-6

Multi-Sensor Real-Time Sensing Based on Fiber Grating Array

Liwei Li, Xiaoke Yi, Tamal Shahriar Joy

Room Virgo 1

Session Name: Plasmonics and Metamaterials III

Session Chair: Tahsin Akalin

10:45--11:15

(c12a329) Invited

Oral 3-2E-1

Enhanced light-matter interaction in nanostructured disordered materials

Rémi Carminati

11:15--11:45 Invited


PGC2012


(c12a545) Oral 3-2E-2

Photonic meta-atom of independently controllable exotic permittivity and permeability

Namkyoo Park, Sukmo Koo, Daniel Mason

11:45--12:00

(c12a424)

Oral 3-2E-3

Characterization of near field transducer for high density heat assisted magnetic recording combined

with FePt recording media

Sajid Hussian, Shawn Siew, Charanjit Bhatia, Hyunsoo Yang , Aaron Danner

12:00--12:15

(c12a530)

Oral 3-2E-4

Controlling Light with Plasmon-plasmon Interaction

Yuriy Akimov, Hong Son Chu

12:15--12:30

(c12a544)

Oral 3-2E-5

Nanoparticle Enhancement for Thin-Film Silicon Solar Cells

Yuriy Akimov, Wee Shing Koh

Room Virgo 2

Session Name: Workshop on Breakthroughs in Nonlinear Optics II

Session Chair: Anna Peacock

10:45--11:30

(c12a739) Invited

Oral 3-2F-1

Nonlinear photonic circuits for ultrafast signal processing: Breaking the terabit per-second barrier

Benjamin Eggleton

11:30--12:00

(c12a750) Invited

Oral 3-2F-2

Optomechanics and Frequency Comb Generation in Optical Microresonators

Tobias J. Kippenberg

12:00--12:30

(c12a363) Invited

Oral 3-2F-3

Extreme events in nature, randomness and rogue wave in optics

John Dudley, Benjamin Wetzel, Bertrand Kibler, Christophe Finot, Guy Millot, Kamal Hammani,

Goery Genty, Frederic Dias

Room Virgo 3

Session Name: Photonic Energy Systems and Nanobiophotonics

Session Chair: Changming Li

10:45--11:15

(c12a379) Invited

Oral 3-2G-1

Low-Power Transmitters for Green Access Networks

Elaine Wong

11:15--11:45

(c12a317) Invited

Oral 3-2G-2

Intersection of light and gold nanoparticles for biomedical applications

Dakrong Pissuwan, Michael Cortie, Takuro Niidome, Nicholas Smith

11:45--12:15

(c12a320) Invited

Oral 3-2G-3

Bioinspired Peptide Photonic Nanomaterials

Gil Rosenman

12:15--12:30

(c12a568)

Oral 3-2G-4

All-Semiconductor Laser based Wind Lidar

Peter John Rodrigo, Christian Pedersen

12:30--12:45

(c12a651)

Oral 3-2G-5

Photocatalytic water purification using planar microreactor

Ning Wang, Furui Tan, Xuming Zhang

Room Virgo 4

Session Name: Postgraduate Student Conference (PGSC) Industry Session

10.45--11.15 Advances in ultrafast oscillators and amplifiers for spectroscopy and microscopy applications

Philippe Feru

Coherent

11.15--11.45 Field Tracing with VirtualLab™: Optical Modeling Beyond Ray Tracing


PGC2012


Christian Hellmann

LightTrans GmbH

11.45--12.15 Supercontinuum sources and interfaces for Bio-Imaging

Chuong Tran

NKT Photonics A/S

Session 3-3 (Date: 16.12.2012)

Room Pisces 1

Session Name: Nanophotonics and Photonic Devices

Session Chair: Xiaohong Tang

14:00--14:30

(c12a496) Invited

Oral 3-3A-1

Synthesis of Homogenous Tungsten Bronze Nanomaterials with Excellent Muti-functionality by a

Water Controlled-Release Solvothermal Process

Shu Yin

14:30--15:00

(c12a760) Invited

Oral 3-3A-2

High Speed Optical Device Simulation

Soon Thor Lim , Ching Eng Png , Vivek Dixit

15:00--15:15

(c12a646)

Oral 3-3A-3

Metal-assisted photonic mode for ultrasmall bending with long sub-wavelength propagation length

Chengyuan Yang, Ee Jin Teo, Tian Goh, Siew Lang Teo, Jinghua Teng, Andrew Bettiol

15:15--15:30

(c12a397)

Oral 3-3A-4

Research on picosecond passively Q-switched microchip laser

Takuya Inoue, Toshiki Koike, Kazuyoku Tei, Shigeru Yamaguchi, Jun Enokidani, Shin Sumida

15:30--15:45

(c12a798)

Oral 3-3A-5

Optical Response of Si/Ge superlattices with embedded Ge dots

Seref Kalem, Orjan Arthursson, Peter Werner

Room Pisces 2

Session Name: Bioimaging and Sensing VI (cancelled)

Session Chair: U. S. Dinish

14:00--14:30


Oral 3-3B-1

Construction of macro scale structure based on nanosized structure units and study on its sensing

properties to bio-/chem- environments

Xianfang Zhu

14:30--15:00


Oral 3-3B-2

Integrated optofluidics devices: dye sources and plasmonic nanosensors

Anne-Marie Haghiri-Gosnet, Sébastien Méance, Guillaume Aubry, Andrea Cattoni, Jean-Christophe

Galas, Qingli Kou, Stéphane Collin

15:00--15:30

(c12a294) Invited (rescheduled to Oral 1-3B-3 )

Oral 3-3B-3

Two-photon Fluorescence Nanothermometry in Bio-Photonics

Jaque Daniel

15:30--16:00


Oral 3-3B-4

A Spatiotemporal Approach to Coherent Control: Implications in Microscopy

Debabrata Goswami

Room Pisces 3

Session Name: Modulators and Detectors

Session Chair: Goran Mashanovich

14:00--14:30

(c12a603) Invited

Oral 3-3C-1

High performance carrier depletion based silicon optical modulators

Dave Thomson

14:30--14:45 Oral 3-3C-2


PGC2012


(c12a371) Ge/Si Avalanche Photodetectors with High Gain-Bandwidth Product

Ning Duan

14:45--15:00

(c12a698)

Oral 3-3C-3

Bit-Error Rate Analysis of Integrated Optoelectronic Receiver

Jin-Sung Youn

15:00--15:15

(c12a500)

Oral 3-3C-4

Performance Optimization of Waveguided Germanium pin Photodetector for Optical Communication

Applications

Andy Lim

15:15--15:45

(c12a323) Invited

Oral 3-3C-5

Low-loss silicon Mach-Zehnder modulators for high-speed optical fibre telecommunications

Kensuke Ogawa

Room Pisces 4

Session Name: Special Optical Fibre Gratings and Applications

Session Chair: Hongpu Li

14:00--14:30

(c12a332) Invited

Oral 3-3D-1

Microfiber Bragg Grating: Fabrication and Application to Refractive Index Sensing

Bai-Ou Guan

14:30--15:00

(c12a705) Invited

Oral 3-3D-2

Optical fiber gratings written in Microstructured optical fibers

Yiping Wang

15:00--15:15

(c12a498)

Oral 3-3D-3

Etched Singlemode Polymer Fiber Bragg Gratings for High Sensitivity Tensile Force Measurements

Ginu Rajan, Bing Liu, Yanhua Luo, Eliathamby Ambikairajah

15:15--15:30

(c12a369)

Oral 3-3D-4 (cancelled)

Optical notch filters with fine parameter control using regenerated fiber Bragg gratings

Carlos Marques, Valmir Oliveira, Hypolito Kalinowski, Rogério Nogueira

15:30--15:45

(c12a686)

Oral 3-3D-5

Optical twisting alert sensor based on PM-EDF short cavity DBR laser

Xuan Quyen Dinh, Meng Jiang, Perry Ping Shum, Zhifang Wu

Room Virgo 1

Session Name: Plasmonics and Metamaterials IV

Session Chair: Aaron Ho

14:00--14:30

(c12a642) Invited

Oral 3-3E-1

Plasmonic resonance enhanced light absorption in metallic nanostructures

Min Qiu

14:30--15:00

(c12a653) Invited(cancelled)

Oral 3-3E-2

Analysis of nanolaser dynamics and gain in metamaterials using semiclassical model

Arkadi Chipouline

15:00--15:30

(c12a762) Invited

Oral 3-3E-3

Single-Particle Plasmon-Resonance Spectroscopy of Nanoscale Phase-Transition in Vanadium

Dioxide

Dang Yuan Lei, Kannatassen Appavoo, Yannick Sonnefraud, Richard Haglund, Stefan Maier

15:30--15:45

(c12a350)

Oral 3-3E-4

Vandium Dioxide Active Plasmonics

Kelvin J. A. Ooi, Ping Bai, Hong Son Chu, Lay Kee Ang

Room Virgo 2

Session Name: Fibre Lasers and Applications II

Session Chair: Liang Dong


PGC2012


14:00--14:30

Empty slot (Invited talk rescheduled to other time slot)

14:30--15:00

(c12a417) Invited

Oral 3-3F-2

New Effects at Cavity Lengthening of an All-Fiber Dissipative-Soliton Oscillator

Sergey A. Babin, Denis S. Kharenko, Evgeniy V. Podivilov, Alexander A. Apolonski

15:00--15:30

(c12a321) Invited

Oral 3-3F-3

High-energy fiber lasers in the dissipative system

Xueming Liu

15:30--15:45

(c12a556)

Oral 3-3F-4

Observation of Soliton Intermittency in a Fiber Laser

Xuan Wu, Ping Shum, Dingyuan Tang

15:45--16:00

(c12a599)

Oral 3-3F-5

Low-noise passively mode-locked fiber laser with linear cavity

Kan Wu, Ping Shum

Room Virgo 3

Session Name: Photonic Interconnect and Switching Technologies for Future Data Centers I

Session Chair: Yong Kee Yeo

14:00--14:30

(c12a484) Invited

Oral 3-3G-1

High gain Properties of Highly Stacked Quantum Dot Fabricated by a Strain-Compensation Technique

Kouichi Akahane, Naokatsu Yamamoto, Tetsuya Kawanishi

14:30--15:00

(c12a518) Invited

Oral 3-3G-2

Recent progress in development of quantum dot devices for optical interconnects

Yu Tanaka, Mitsuru Sugawara, Arakawa Yasuhiko

15:00--15:30

(c12a714) Invited

Oral 3-3G-3

A Transformable Hybrid Packet and Circuit Switching Network Node

Weiqiang Sun, Weisheng Hu

15:30--15:45

(c12a452)

Oral 3-3G-4

Performance of Reconfigurable Free-Space Card-to-Card Optical Interconnects under Atmospheric

Turbulence

Ke Wang, Ampalavanapillai Nirmalathas, Christina Lim, Efstratios Skafidas, Kamal Alameh

Room Virgo 4

Session Name: Postgraduate Student Conference (PGSC) Student Forum

14:00--15:45

Students will present their works as their country representatives. One best student paper in PGSC will be awarded.

Poster Session IV (Date: 16.12.2012)

P4-01

(c12a610) Modeling of a Type-II Antimonide based Superlattice for Novel Optical Switching Applications

Muktadir Rahman, A. S. M Shamsur Rouf, Farseem Mannan Mohammedy

P4-02

(c12a418) Microlasers and Optical Sensors based on Flexible Polymer Fibers

Van Duong Ta, Rui Chen, Handong Sun

P4-03

(c12a507) The role of cold sonicated development scenarios for achieving ultradense and high aspect ratio

for optical metamaterial applications

Landobasa Y. M. Tobing, Liliana Tjahjana, Dao Hua Zhang

P4-04

(c12a622) Performance Comparisons between Lightpath and Light-tree Schemes in Dynamic Multicast

Traffic Grooming Process

Xiaojun Yu, Gaoxi Xiao, Tee-Hiang Cheng

P4-05

(c12a515) Differential mode group delay measurement for few-mode fiber using phase-sensitive

intermodal spectral domain interferometer

Chan-Young Kim, Il-Shin Song, Tae-Jung Ahn

P4-06 Investigation of Optical Gain in AlGaAs/GaAs Symmetric Double Semi-Parabolic Quantum


PGC2012


(c12a425) Well Laser

Alireza Keshavarz, Naser Zamani, Farzin Emami

P4-07

(c12a519) Effect of a weak longitudinal modulation in refractive index on transverselocalization of light in

1D disordered waveguide lattices

Somnath Ghosh, Ravi K. Varshney, Bishnu P. Pal

P4-08

(c12a426) Effect of a defected core for squeezed photonic crystal fiber

So Eun Kim, Chul Sik Kee, Chung Ghiu Lee

P4-09

(c12a520) Performance Evaluation of VCSEL ONU Using Energy-Efficient Just-In-Time Dynamic

Bandwidth Allocation Algorithm

Maluge Pubuduni Imali Dias, Elaine Wong

P4-10

(c12a623) A Novel Multimode Fiber for Distributed Temperature Sensing based on Anti-stokes Raman

Scattering

Jiangtao Guo, Tao Xia, Rui Zhang, Xiaobing Li

P4-11

(c12a427) Linear and nonlinear optical properties of quantum well with position-dependent effective mass

Gholamreza Honarasa, Alireza Keshavarz, Naser Zamani

P4-12

(c12a522) Grating Assisted Light Coupling between Long-Range and Short-Range Surface Plasmon

Polariton Modes

Qing Liu, Jack Sheng Kee, Mi Kyoung Park

P4-13

(c12a428) Breast thermography and pseudo-coloring presentation for improving gray infrared images

Zahra Zahedi

P4-14

(c12a523) Azobenzene polymer waveguide For UV sensor

Tae-jung Ahn, Il-Shin Song, Chan-Young Kim, A-Ram Han, Jong Su Yoo, Seong Yun Lee, Hyun-

Kyoung Kim

P4-15

(c12a626) Novel All-optical Wavelength Conversion with Ultrabroad Conversion Tunability and

Modulation-transparency

Gong Yongkang

P4-16

(c12a726) Occurrence of the Si Particles and Reducing Method as Using the Excimer UV

Kim YongWoo

P4-17

(c12a429) Design of broadband dispersion compensating octagonal photonic crystal fiber for optical

communication system

Md. Selim Habib, M. A. G. Khan, Md. Samiul Habib, S. M. A. Razzak

P4-18

(c12a528) Analysis of Motion-Induced Radiation of Charged Particles

Yangjie Liu, Ricky Ang

P4-19

(c12a433) Performance of indoor optical wireless communication system employing convolutional

encoding

Yeon-Mo Yang, Soeun Kim, Chung Ghiu Lee

P4-20

(c12a365) Light Through Nanocrescent Arrays

Xiaoxiao Jiang, Qiongchan Gu, Hailong Liu, Linjuan Yang, Guangyuan Si

P4-21

(c12a477) Light Property and Optical Buffer Performance Enhancement Using Particle Swarm

Optimization in Oblique Ring-Shape-Hole Photonic Crystal Waveguide


P4-22

(c12a382) Fabrication of Nanoarms and Nanotips via Focused Ion Beam Milling

Xiaoxiao Jiang, Qiongchan Gu, Jiangtao Lv, Yanjun Liu, Guangyuan Si, Hongjun Duan,

Zhenhe Ma, Fengwen Wang, Jinghua Teng

P4-23

(c12a785) A Novel Miniature Magnetic Field Sensor Based on Faraday Effect Using a Heterodyning Fiber

Grating Laser

Linghao Cheng, Jianlei Han, Zhenzhen Guo, Long Jin, Bai-Ou Guan

P4-24

(c12a786) Microfiber Fabry-Perot Sensors Inscribed by 193nm excimer laser

Jie Li, Xiang Shen, Lipeng Sun, Bai-ou Guan

Session 3-4 (Date: 16.12.2012)

Room Pisces 1

Session Name: Nanophotonics and Electro-Optic Devices

Session Chair: Dan Hewak

16:15--16:45

(c12a298) Invited

Oral 3-4A-1

New optical bio-sensor from DNA and nano structures

Ai Viet Nguyen, Anh D. Phan





PGC2012


16:45--17:15

(c12a791) Invited

Oral 3-4A-2

Tunneling of Light in Gradient Dielectric Nanostructures: from Paradoxes to Devices

A.B.Shvartsburg, O.D.Volpian

17:15--17:30

(c12a580)

Oral 3-4A-3

Study of Phase Conjugated wave in DASPB dye-doped polymer films

Shubhrajyotsna Aithal, Sreeramana Aithal

17:30--17:45

(c12a582)

Oral 3-4A-4

Precision determinations of laser radiation coherence by digital processing of their interferograms

Eugene Tikhonov

17:45--18:00

(c12a633)

Oral 3-4A-5

Optical frequency comb generation by cascaded second-order nonlinear effect in a quasi-phase

matched micro-ring resonator

Zi-Jian Wu, Yang Ming, Fei Xu, Yan-Qing Lu

18:00--18:15

(c12a643)

Oral 3-4A-6

Exciton Type 2 in Graphene Bilayer

Thi Hoa Vo, Thi Thao To, Van Thanh Ngo, Ai Viet Nguyen, Tri Lan Nguyen

Room Pisces 2

Session Name: Radio over Fibre and Advanced Optical Communications

Session Chair: Elhadj Dogheche

16:15--16:45

(c12a359) Invited

Oral 3-4B-1

Digitized RF-over-Fiber for Efficiency Fiber-Wireless Signal Transport

Christina Lim

16:45--17:00

(c12a383)

Oral 3-4B-2

Performance enhancement of radio-over-fiber system by optical injection locking of a directly

modulated semiconductor laser

Puspa Devi Pukhrambam,Ming-Hsueh Chuang, San-Liang Lee, Gerd Keiser, Yung-Jr Hung, Joni W.

Simatupang

17:00--17:15

(c12a434)

Oral 3-4B-3

90-GHz Radio-on-Radio-over-Fiber System for Linearly Located Distributed Antenna Systems

Atsushi Kanno, Dat Pham Tien, Tetsuya Kawanishi, Naruto Yonemoto, Nobuhiko Shibagaki

17:15--17:30

(c12a439)

Oral 3-4B-4

12-Gbit/s DMT Transmission Based on 1-GHz RSOA with Mitigated Rayleigh Backreflection

Employing 10-MHz Clipping of Optical Seed Carrier

Moon-Ki Hong, Sang-Min Jung, Iwa Kartiwa, Sang-Kook Han

17:30--17:45

(c12a451)

Oral 3-4B-5

Photonic Generation of Microwave Pulses with Wide Frequency Multiplication Tuning Range

Jia Haur Wong , Sheel Aditya, Huy Quoc Lam, Kenneth Eng Kian Lee, Peng Huei Lim, Perry Ping

Shum

17:45--18:00

(c12a674)

Oral 3-4B-6

An OFDMA-PON architecture supporting flexible all-optical VPN with source-free ONUs

Zhiming Zhang, Mu Xu, Jiayang Wu, Pan Cao, Xiaofeng Hu, Tao Wang, Yikai Su

Room Pisces 3

Session Name: Signal Processing via Silicon Photonics

Session Chair: Dave Thomson

16:15--16:45

(c12a743) Invited

Oral 3-4C-1

CMOS Compatible Chips for Nonlinear Optics

David Moss, Roberto Morandotti, Marco Peccianti, Alessia Pasquazi

16:45--17:00

(c12a435)

Oral 3-4C-2

Numerical analysis of the Four-Wavelength-Mixing (FWM) in the ring-resonator on SOI

Lianxi Jia, Junfeng Song, Xiaoguang Tu, Mingbin Yu, Patrick Lo

17:00--17:15

(c12a680)

Oral 3-4C-3

Free carrier and group velocity dispersion effects on silicon-based optical pulse compression

Dawn Tse Hui Tan

17:15--17:45 Invited


PGC2012


(c12a800) Oral 3-4C-4

High Speed Optical Interconnect based on silicon Photonics

Haisheng Rong

17:45--18:00

(c12a526)

Oral 3-4C-5

Silicon microring resonator sensors for the detection of volatile organic compounds

Dongliang Fu, Qing Liu, Jack Sheng Kee, Mi Kyoung Park

18:00--18:15

(c12a467)

Oral 3-4C-6

Optically trapping cold atoms by using a silicon nanopillar

Thuy Anh Chu, Thi Nga Do, Tri Lan Nguyen, Ai Viet Nguyen

Room Pisces 4

Session Name: Sensing Technology and Smart Grid

Session Chair: Jianzhong Hao

16:15--16:45

(c12a751) Invited

Oral 3-4D-1

Brillouin Scattering in Plastic Optical Fibers: Fundamental Properties and Sensing Applications

Mizuno Yosuke, Hayashi Neisei, Nakamura Kentaro

16:45--17:15

(c12a790) Invited

Oral 3-4D-2

New technologies for optical fiber distributed sensors based on Rayleigh and Brillouin scattering

Xuping Zhang, Junhui Hu, Yixin Zhang

17:15--17:30

(c12a618)

Oral 3-4D-3

Monitoring optical fiber sensor networks by optical frequency-domain reflectometry

Zhenyang Ding, Tiegen Liu, Kun Liu, Yang Du, Dingjie Li

17:30--17:45

(c12a482)

Oral 3-4D-4

Design of Fast Pulse Coding and Decoding System for BOTDR

Fan Zhu, Xuping Zhang, Yixin Zhang

17:45--18:00

(c12a625)

Oral 3-4D-5

A Modified Demodulation Algorithm for Fiber-Optic Distributed Temperature Sensing System Based

on Raman Scattering

Tao Xia, Jiangtao Guo, Xiaobing Li, Xin Mao

Room Virgo 1

Session Name: Photonic Interconnect and Switching Technologies for Future Data Centers II

Session Chair: Tetsuya Kawanishi

16:15--16:45

(c12a740) Invited

Oral 3-4E-1

Nanostructured silicon photonics devices fabricated by CMO-compatible process

Toshihiko Baba

16:45--17:00

(c12a627)

Oral 3-4E-2

Modeling An Electrically Driven Single-Graphene-Nanoribbon Laser for Optical Interconnects

Guangcun Shan, C.H. Shek

17:00--17:15

(c12a375)

Oral 3-4E-3

Modeling and performance analysis of single substrate based 1×4 digital optical switches

Ghanshyam Singh, Rajesh Kumar, Vijay Janyani, A. K. Solanki

17:15--17:45

(c12a436) Invited

Oral 3-4E-4

Photonic functional devices for an optical network node using arrayed-waveguide gratings

Hiroyuki Tsuda

Room Virgo 4

Session Name: Postgraduate Student Conference (PGSC) Panel Discussion

16:45--17:45 Topic: Challenges in Photonics Research and Future Career Development

Panel Members: John Dudley (University of Franche-Comté, France)

Nader Engheta (University of Pennsylvania, USA)

John Harvey (University of Auckland, New Zealand)

Aaron Ho (The Chinese University of Hong Kong, Hong Kong)

Ajoy Kar (Heriot Watt University, UK)

Rachel Won (Nature Photonics, Japan)


PGC2012


Panel members will share their opinions and experience in their research. Students will ask the questions that they feel

interested in either photonics research trends or career development.


PGC2012


vi. Abstracts

Only the first affiliation of each manuscript

is included in the abstract book. For more

information, please refer to the CD

proceeding.


PGC2012


ORAL PAPER ABSTRACTS

PGC2012

Keynote Speaker

What Next for the Optical Internet? Prof. David N. Payne



Powering the optical fibre internet with its huge

global reach, photonics has changed our lives. Optical

fibres snake across continents and oceans carrying

terabits per second of data in a vast information network

that brings untold human connectivity. But capacity

demand continues to grow at a startling rate, doubling

every two years, while the internet is estimated as

burning several per cent of world energy usage. The

optical internet is reaching its capacity limits. The

solution to these consequences of unbridled demand is

more photonics, reaching further into the network with

optics to overcome the existing bottlenecks and

employing next-generation optical components –

Internet 2.0.

The great success of optical fibres and planar circuits

in telecommunications has generated numerous

tantalising applications in a number of related fields,

such as sensing, bio- and nano-photonics and high-

power lasers. Incredibly, the same fibres that carry tiny

internet signals can also generate kilowatts of power,

sufficient to cut through inch-thick steel and perhaps

drive the next generation of high energy physics.

The talk will celebrate optical fibre technology and

asks what next?

PGC2012

Keynote Speaker

From Metamaterials to Metadevices Prof. Nikolay I. Zheludev



We define metadevices as devices with all sorts of

useful functionalities that can be achieved by structuring

of materials responsive to external stimuli on a scale

smaller than the operational length.

We report an overview on our recent work on

developing photonic and microwave electromagnetic

metadevices, in particular metadevices exploiting phase

change media, electrosctatic and optomechanical forces,

coherent effects and nonlinear and quantum response of

superconductors.

Oral 1-3A-1

Invited Speaker

Plasmonic Light Absorbers And

Photothermal Effects Min Qiu

Zhejiang University

In the present invited talk we will review our recent

work on plasmonic EM wave absorbers and related

photothermal effects. We have experimentally

demonstrated plasmonic metamaterial absorbers at

optical communication wavelength, and we have even

observed close-to-instantaneous fusion and re-shaping of

the nanoparticles with a nanosecond pulse train. We

have also developed a heat transfer model to investigate

the temporal variation and spatial distribution of

temperature for the photothermal effects in such

plasmonic gold nanostructures. Such plasmonic

photothermal effects in plasmonic nanostructures have

great potentials for many potential applications.

Oral 1-3A-3

Generation of short contrapropagating pulses of

second harmonic in frequency double domain

positive/negative index metamaterials Alexander K. Popov, Igor S. Nefedov, Sergey A. Myslivets

University of Wisconsin-Stevens Point

Extraordinary properties of short-pulse second

harmonic generation in a frequency double-domain

positive/negative index metamaterial are investigated

and shown to appear in striking contrasts with those of

their counterparts in ordinary materials. A metamaterial

made of carbon nanotubes is proposed which supports

coexistence of ordinary fundamental and backward

second harmonic electromagnetic waves.

Oral 1-3A-4

Invited Speaker

Engineering of Vis-NIR

Metamaterials towards

Revolutionary Ultrasensitive and

Versatile Plasmonic Biosensors Jun Zhang, Cuong Cao, Qihua Xiong

Nanyang Technological University By enabling subwavelength light localization and

strong electromagnetic field enhancement, plasmonic

biosensors have opened up a new realm of possibilities

for a broad range of chemical and biological sensing

applications owing to their label-free and real-time

attributes. Here, we show that by engineering geometry

of plasmonic metamaterials,1 the plasmonic resonance

of metamaterials could be tuned to visible-near infrared

regimes (Vis-NIR) such that it allows parallel

acquisition of optical transmission and highly surface-

enhanced Raman (SERS) spectra from large

functionalized SRR arrays. This will provide the basis of

versatile and dual transducing-channel devices for

identification of different conformational states of


PGC2012


Guanine-rich DNA, detection of a cancer biomarker

nucleolin, and femtomolar sensitivity detection of food

and drink additives that will be demonstrated in our

presentation. These results show that the tunable Vis-IR

metamaterials are very versatile biosensing platforms

and suggest considerable promise in genomic research,

disease diagnosis, and food safety analysis.

Oral 1-3A-5

1D Magneto-Plasmonic Periodic Structures-

Oblique Wave Propagation Shahram Hosseinzadeh

Azarbaijan Shahid Madani University

The dispersion diagram for oblique wave may differ

from that of normal incident wave. The aim of the

present paper is to investigate the above mention

deviation. In this regard, coupled partial differential

equation is derived for tangential field components are

developed. Then by eign-analysis, the eign polarization

and correspond wave constant is found, the effective

dielectric constant is determined. Finally the dispersion

diagram for periodic structure is calculated.

Oral 1-3B-1

Invited Speaker

Optothermal therapy with

nanoparticles Min Gu

Swinburne University of Technology

Dependent on the shape and size, gold nanoparticles

can absorb and scatter light with wavelength in visible

and near infrared region. Gold nanoparticles are able to

convert the absorbed energy into heat energy quickly in

the piscosecond time domain, making them excellent

candidates for photothermal cancer treatment. Among

the gold nanoparticles of various shapes, gold nanorods

have been attracting special interest as they exhibit two

absorption bands due to the surface plasmon resonance.

This property facilitates their larger cross section for

energy absorption in the near-infrared region under two-

photon excitation, which is suitable to three dimensional

imaging and therapy. We will first show our recent

progress on cancer cell imaging and treatment with gold

nanorods in nonlinear optical endoscopy and tweezing.

We will also demonstrate that broadband cancer cell

therapy of graphene oxide (GO) nanoparticles can be

induced by an ultrafast pulsed laser through two-photon

excitation.

Oral 1-3B-2

Photoacoustic Phasoscopy for Tissue

Characterization Fei Gao, Yuanjin Zheng, Xiaohua Feng, Claus-Dieter Ohl

School of Electrical and Electronics Engineering, Nanyang

Technological University, Singapore

In this paper, a novel method named photoacoustic

phasoscopy (PAP) is proposed to collect both scattered

photons and induced photoacoustic wave to build a

photo-acoustic phase spectrum, rather than conventional

frequency spectrum, for biological tissue

characterization,. PAP provides phase contrast with

enhanced sensitivity and robustness compared with pure

optical or photoacoustic sensing only. Experimental

result of characterizing three different kinds of

biological tissues proves the feasibility of PAP for

potential biomedical sensing and imaging applications.

Oral 1-3B-3

Invited Speaker

Two-photon Fluorescence

Nanothermometry in Bio-Photonics Jaque Daniel

Universidad Autonoma de Madrid Two-photon excited nano-particles are widely used

in bio-photonic applications, specially in bio-imaging

since they allow for high-resolution, high-penetration

imaging of cells and tissues. In this paper we show how

temperature dependence of the two-photon excited

fluorescence of Quantum Dots and Rare Earth doped

Nano-crystals can be used for thermal sensing and

imaging of different systems of interest in bio-photonics.

As an example we will show how QDs provide

intracellular thermal sensing during hyperthermia

treatments as well as thermal imaging of opto-fluidic

devices specially designed for optical trapping.

Oral 1-3B-4

Metallic Nanoantenna Arrays for LSPR and

SERS Biosensing Stephanie Dodson, Shuzhou Li, Qihua Xiong

NTU SPMS PAP

Nanoscale metallic structures possess unique optical

and electronic properties that can be readily exploited

for applications in highly-sensitive biosensing. The

localized surface plasmon resonance (LSPR) and surface

enhanced Raman scattering (SERS) of metallic

nanostructures can be tailored via geometry. We have

achieved highly precise fabrication with a wide range of

tunability of the structural parameters, and

systematically investigated the optical properties in

comparison with discrete dipole approximation (DDA)

calculations. We find that with optimal geometries and

very sharp resonances the maximum enhancement

factors of SERS detection can be reached up to 1011.

The resonances of the structures are tunable from visible

to infrared. These highly sharp resonances can be

utilized as LSPR shift biosensors for observing binding

events between molecules, potentially with a very low

limit-of-detection.

Oral 1-3B-5

Optical Imaging of Hyperoxic Lung Injury Reyhaneh Sepehr, Sepideh Maleki, Annie Eis, Girijia Konduri,

Mahsa Ranji

University of Wisconsin Milwaukee

The objective of this study is to use an optical

imaging technique to evaluate cellular redox state in the


PGC2012


hyperoxia induced injury in neonate rat lungs. The ratio

of two intrinsic fluorophores (NADH/FAD), referred to

as NADH redox ratio is used as an indicator of tissue

metabolism in this injury model. Lipopolysaccharide

(LPS) and oxygen toxicity, which result in pulmonary

vascular endothelial injury, contribute to vascular

simplification, as seen in the lungs of premature infants.

Hyperoxia, which is a model of acute lung injury (ALI),

reduces cell proliferation, causes DNA damage, and

promotes cell death which results in mitochondrial

dysfunction. Our preliminary studies shows a 49% more

oxidized respiratory chain of hyperoxic lungs compared

to normoxic ones from optical images.

Oral 1-3C-1

Invited Speaker

Heteroepitaxial indium phosphide

micro and nanostructures on silicon

for silicon photonics Sebastian Lourdudoss

KTH - Royal Institute of Technology

After reviewing some recent advances in direct

heteroepitaxy and selective area heteroepitaxy of III-Vs

on silicon for silicon photonics, we present our approach

of epitaxial lateral overgrowth of III-V on silicon. The

good optical quality of the micro and nanostructures

produced by this method is confirmed by

photoluminescence and cathodoluminescence studies.

Means of achieving an integrated silicon laser through

epitaxial lateral overgrowth is discussed and exemplified.

Oral 1-3C-2

Invited Speaker

Active Liquid Crystalline 3-D

Photonic-Crystal and Plasmonics

Metamaterials/Nanostructures Iam Choon Khoo

Pennsylvania State University

Photonic crystals, metamaterials and other

nanostructures have been intensively studied as they

possess novel emergent properties required for enabling

extraordinary performance and photonics

operations/functions. Active tunable or reconfigurable

variants of these materials/structures can be achieved by

incorporating electro-optical and/or nonlinear optical

materials in the synthesis and fabrication process. In this

presentation, we provide a critical review of electro-

optics and nonlinear-optics of the mesophases (including

the Blue-Phase) of liquid crystals and recent results on

plasmonic/metamaterial nano-structures infiltrated with

liquid crystals. We have demonstrated tunable

transmission, reflection, cloaking and switching

operations using thermal, electrical, optical and more

recently, acoustic means. Recent first observation of

nonlinear optical Kerr effect and random lasing actions

in dye-doped Blue Phase liquid crystals, and the impact

of these observations on next generation optical

modulation, display and image processing applications

will also be discussed. [Ref.: JOSA B28, pp. A45-A55

[2011]; Opt. Lett. 37, pp. 3225-3227 (2012)]

Oral 1-3C-3

Invited Speaker

Metamaterials to bridge

propagating waves with surface

waves and control electromagnetic

waves Shulin Sun, Qiong He, Shiyi Xiao, Wujiong

Sun, Zhengyong Song, Lei Zhou

Fudan University We review our recent efforts in employing

metamaterials to control electromagnetic (EM) waves. In

particular, we show that a carefully designed gradient-

index meta-surface can covert an incident propagating

wave to an surface wave bounded on the meta-surface

with 100% efficiency. Such an effect was

experimentally demonstrated in both microwave and

visible regimes.

Oral 1-3C-4

Invited Speaker

Fourier Transform-based kp

Method: An Approach to Meshless

Modeling of Low-dimensional

Heterostructures Ting Mei, Qiuji Zhao, Dao Hua Zhang

South China Normal University Among methods modeling electronic structures of

low dimensional heterostructures, such as first principles,

tight binding, kp, etc., the multiband kp method is the

most effective for low dimensional systems with a big

compilation of atoms such as quantum dots. Numerical

implementation like the finite difference method and the

finite element method engages differential or integral

process and thus requires a 3D-space mesh. In our

developed Fourier transform-based kp method (FTM),

both Hamiltonian matrix and envelope functions are

formulated in Fourier domain. The analytical Fourier

transform of the 3D shape function of the object can be

adopted such that meshing 3D space is avoidable in

retrieving eigen solutions of kp equations. Both the

kinetic part and the strain have been incorporated in the

Hamiltonian equation. The FTM demonstrates

advantage on controlling spurious solutions due to its

inborn cut-off process, whereas incorporation of Burt-

Foreman operator ordering further enhances the merit.

Oral 1-3D-1

Invited Speaker

Microstructured Optical Fibers: An

Emerging Fiber Optics Platform for

Application-specific Specialty Fiber

Designs Bishnu P. Pal, Somnath Ghosh, Ajanta Barh,

Ravendra K. Varshney

Indian Institute of Technology Delhi


PGC2012


The year 2012 is coincidentally the 25th year since

the first reports on EDFA and photonic crystals. EDFA

enabled us instant access to the Internet while the

concept of photonic crystal led to development of

microstructured optical fibers (MOF). MOFs have

emerged as a versatile platform for engineering specialty

optical fibers and have attracted a great deal of attention

from the FO community. Often referred to as photonic

crystal fibers in the literature – there are two main

variants - index guided and photonic bandgap guided

MOFs. Due to a multitude of MOF parameters that one

could play around, MOFs offer huge design freedom to

achieve application-specific tailored fiber designs. In

this talk, we would focus on basics of waveguidance in

MOFs and our own research in recent years on a variety

of application-specific MOF designs and also realization

of some of these designed fibers.

Oral 1-3D-2

Invited Speaker

Innovation on fabrication method

for large mode-area and high

concentration Yb3+-doped

microstructure optical fibers Guiyao Zhou

Laboratory of Nanophotonic Functional

Materials and Devices, South China Normal

University For avoiding the drawbacks of chemical vapor

deposition (CVD) technology in the fabrication of Yb3+-

doped microstructure optical fibers, such as low

concentration, nonuniform distribution of refractive

index and limitation of small core, we described non-

chemical vapor deposition (No-CVD) method for

fabricating the large mode-area and high concentration

Yb3+-doped microstructure optical fibers. The method

involves the hydrolyzing process of silicon tetrachloride

in Yb3+ ion solution, drying and dehydroxy process and

the melting process in plasma furnace. The high

concentration Yb3+-doped silica glass rods were

successfully prepared by these technologies, the doping

concentration was above 10000ppm (wt) and the

diameter of the Yb3+-doped silica glass rod could be

above 10mm. The doped silica glass rod was used as the

core of microstructure optical fibers, then the large

mode-area and high concentration Yb3+- doped

microstructure optical fibers were faricated by stacking

and drawing method.

Oral 1-3D-3

Design and Fabrication of LMA low-bending

loss Leakage Channel Fibers Mrinmay Pal, Kunimasa Saitoh

Central Glass & Ceramic Research Institute

We report design and fabrication of both all-glass

fluorine doped and air-clad leakage-channel fibers (LCF)

to achieve large-mode-area (LMA) and effectively

single-mode operation with a minimum bending loss

(BL) for compact Yb-doped fiber laser delivery

applications. The BL and effective area for the

fabricated LCF were numerically calculated by using

full-vector FEM for both A-A/ plane and B-B

/ plane. A

high enough differential BL between the fundamental

mode (~ 0.1dB/m) and the higher order mode (100dB/m)

can be found in A-A/ plane. The measured BL of the air-

clad LCF was 0.09 dB/m and effective area of 350 µm2

for 5 cm bending radius which is the best performance

for minimum bendable LCF. The dispersion

characteristic of the air-clad LCF is calculated and it has

zero dispersion at 1.264µm. Single-mode nature of

1064nm light was measured at bent LCF. All-glass F-

doped LCF was fabricated for easy splicing with

standard SMF.

Oral 1-3D-4

Design and Fabrication of Side-channel

Photonic Crystal Fiber Ying Cui, Georges Humbert, Xuan-Quyen Dinh, Feng Luan,

Hai Vu Ngoc, Tran Quoc Tien, Jean-Louis Auguste, Ping

Perry Shum

Nanyang Technological University

In this work we propose a new design of photonic

crystal fiber with a side channel in the cladding region.

The advantage of this fiber design is to provide easy

access to the fiber core for applications requiring real-

time measurement and longer interactions with light,

such as microfluidic devices and solution-based optical

sensors.

Oral 1-3D-5

Fabrication and Characteristic of A Simplified

Hollow-core Microstructured Fiber Huifeng Wei, Xinben Zhang

State Key Laboratory of Optical Fiber and Cable Manufacture

Technology, R&D center, Yangtze Optical Fiber and Cable

Company Ltd. A simplified hollow-core microstructured fiber was

fabricated and investigated. The diameter of the core is

about 31 µm, and the thickness of the bridges t is about

280nm. One broad band with relative low loss

transmission windows were measured at ~650 nm with

bandwidth of ~100 nm. A Gaussian-shaped beam

profile with visible pattern guided by the large core was

observed in far field. The curvature behavior was also

studied. This large core broad band transmission fiber

offers a good medium for applications in high energy

delivery, novel gas-cell based laser and other sensing

devices.

Oral 1-3E-1

Polarization Splitter Using Horizontal Slot

waveguides Huijuan Zhang, Suchandrima Das, Ying Huang, Chao Li,

Mingbin Yu, John Thong, Guo-Qiang Lo

Institute of Microelectronics, A*STAR

A polarization diversity circuit is essential for

overcoming the polarization-dependent characteristics of

Silicon (Si) waveguide due to the high index contrast in

Si photonics. In this work, compact and efficient

polarization splitters using horizontal slotted waveguides


PGC2012


are presented. The device is fabricated using

Complementary Metal−Oxide−Semiconductor (CMOS)

compatible processes, which allows monolithic

integration with active drive electronics and other

photonic components. (Fig 1a-1d) The splitter is built

using two parallel horizontal slotted waveguides (Fig 1e)

and achieves a balanced extinction ratio ~16 dB for a

short coupling length of 15 µm at 1550 nm. (Fig 2) The

device also exhibits a great response over C+L band

wavelength range of 1530-1600 nm.

Oral 1-3E-2

TE-Pass Polarizer Based on Horizontal

Nanoplasmonic Slot Waveguide Ying Huang, Shiyang Zhu, Huijuan Zhang, Tsung-Yang Liow,

Patrick Lo

Institute of Microelectronics, A*STAR, Singapore

We proposed a novel TE-pass polarizer on SOI

platform using horizontal nanoplasmonic slot waveguide

(HNSW). Design principle is clearly illustrated, in which

the TM mode is cut-off below 210nm-HNSW-width. 3-

D FDTD simulation is subsequently performed to

investigate and optimize the polarizer performance. We

show that more than 18dB PER can be obtained with an

ultra-compact device length of 1µm, representing a three

order of magnitude size reduction from earlier works.

The insertion loss is ~ 3dB, with a broad operating

bandwidth of 80nm.

Oral 1-3E-3

Invited Speaker

Recent Advances in Suspended

Silicon Membrane Waveguides Hon Ki Tsang, Zhen-Zhou Cheng

The Chinese University of Hong Kong

Thin silicon membrane waveguides (SMW) are of

interest for mid-infrared (mid-IR) applications because

the local removal of buried oxide (BOX) in a silicon-on-

insulator wafer significantly reduce optical absorption

losses, which are as high as 100 dB/cm in silica at 2.75

µm wavelength. We consider different SMW

dimensions to achieve low dispersion at wavelengths

between 2.0 µm and 8.0 µm, and calculate their effective

optical nonlinearity. The SMWs were characterized by

an erbium praseodymium co-doped ZBLAN fiber laser

at 2.75 µm. Negligible bending losses were measured for

radii larger than 40 µm. Waveguide loss was 3.0 dB/cm.

Microring resonators on the SMW platform had Q of

10000 and extinction ratio of 13 dB in near-IR. In mid-

IR, the Q was 8100. Apodized focusing subwavelength

grating for coupling to SMW were designed for coupling

to TM mode of the SMW. Coupling losses of 3dB were

obtained experimentally.

Oral 1-3E-4

Mode converter between channel waveguide and

slot waveguide Jing Zhang

National Metrology Centre

Silicon slot waveguide based mode converter was

designed for the effective mode conversion and

polarization rotation between a horizontal channel

waveguide and a vertical slot waveguide. The device

with minimum length of 40µm was demonstrated in

amorphous silicon waveguides to provide the mode

conversion between the TE mode in the horizontal

channel waveguide and the TM mode in the horizontal

slot-waveguide. The insertion loss at the transition

region plus the propagation loss in 1.5mm long slot

waveguide was less than 3dB. More than 10 dB

polarization extinction ratio (PER) was achieved in this

device.

Oral 1-3E-5

Cleaved Fiber-to-Nano Waveguide Mode

Converter for Silicon Photonics Devices Qing Fang, Junfeng Song, Tsung-Yang Liow, Lianxi Jia,

Xianshu Luo, Mingbin Yu, Guoqiang Lo

Institute of Microelectronics, Singapore

In this paper, a high efficient fiber-to-waveguide

mode converter is demonstrated on the SOI platform,

which is composed of a suspended tapered SiO2

waveguide and overlapped Si nano-tapers. The

overlapped Si nano-tapers are located in the center of

suspended tapered SiO2 waveguide. With a refractive

index (<1.4) matching liquid, the coupling losses

between the cleaved optical fiber and this converter are

1.5 dB/facet and 2.1 dB/facet for TE and TM modes,

respectively. The 1 dB bandwidths for both TE and TM

modes are more than 100 nm. The alignment tolerances

for both TE and TM modes are ± 2.5 µm and 2.0 µm for

1 dB excess loss in horizontal direction and vertical

direction, respectively.

Oral 1-3E-6

Tolerant wideband high-efficiency grating

coupler for TM mode excitation Zhe Xiao, Feng Luan, Tsung-Yang Liow, Jing Zhang, Ping

Shum


An optimized grating coupler featuring both ultra-

broad bandwidth and high-efficiency has been achieved

for the first time for the +1 diffraction order at a central

operating wavelength 1.55 µm for TM polarization in

horizontal slot waveguides. With proper design of the

thickness of the groove thickness in grating region, we

achieved a 60 nm 1 dB bandwidth, and the 3 dB

bandwidth is 92 nm covering the entire C-band, and

most of L-band and S-band. It is nearly two times more

than the previously reported value. Maximum coupling

efficiency of 65% has been achieved for positive

detuned grating couplers with incident light from SMF

at 8°. Sensitivity to fabrication and alignment tolerances

of the structure has been analyzed.


PGC2012


Oral 1-3F-1

Invited Speaker

Chaos in optoelectronics and

applications Daniel Gauthier

Duke University

I will discuss position-sensing techniques that relies

on the inherent sensitivity of chaos, where a

subwavelength object is illuminated by a complex

structured field generated using wave chaos and

nonlinear feedback. A two-dimensional position

accuracy of 1/300 of the wavelength is obtained.

Realizations in the radio-frequency and optical domains

will be discussed.

Oral 1-3F-2

Invited Speaker

New Frontiers in Functionalized

Optical Fibers Anna Peacock

University of Southampton

One of the earliest examples of functionalized fibers

dates back to the liquid-core fibers investigated in the

1970s. At the time, these fibers exhibited some of the

lowest transmission losses to enable many of the first

demonstrations of nonlinear optical effects in the fiber

geometry. Over the years, the techniques to incorporate

functional materials into high aspect ratio capillary

templates have become more sophisticated, with the

materials catalogue now extending to gases, metals, soft

glasses, and semiconductors. Significantly, development

in this field has coincided with the advent of

microstructured optical fibers (MOFs) which can serve

as three dimensional templates for the materials

infiltration. By exploiting the design flexibility afforded

by the MOFs, the light-matter interactions can be

precisely controlled to tailor the properties of the hybrid

fibers. This presentation will review the recent

advancements in this field with particular focus on the

development of functionalized fibers for optoelectronic

technologies.

Oral 1-3F-3

Invited Speaker

Advances in Nonlinear Integrated

and Waveguide Devices Alessia Pasquazi, Marco Peccianti, Dave

Moss, Roberto Morandotti

INRS-EMT

While the demand for bandwidth is still increasing,

electronics is now approaching many fundamental

limitations in speed. Very likely the next generation of

processors will implement optical methods to transport

the signal to different part of the chip. Hence photonics

materials and optical integration strategies will have to

meet the current CMOS technology and platform.

Ultimately a number of optical functionalities will have

to be realized in an all-optical way.

In particular, future time-domain multiplexed optical

networks will exploit stable pulsed sources exceeding

hundreds GHz repetition rates, possibly based on passive

mode locked lasers. We recently demonstrated that it is

possible to obtain stable, high repetition mode-locked

soliton emission, by using a nonlinear high-finesse filter,

thus exploiting a novel interaction mechanism that we

named Filter-Driven Four Wave Mixing (FD-FWM) and

which extends the DFWM operating mechanism through

the use of a highly nonlinear integrated micro-ring

resonator.

Oral 1-3G-1

Invited Speaker

Novel vertically-aligned ZnO

Nanoforms for Excitonic Solar

Cells: Dye sensitized and Organic

Solar Cells Monica Lira-Cantu, Irene Gonzalez-Valls

CIN2 (CSIC-ICN), Spain ZnO is a promising material to be applied in

excitonic solar cell (hybrid, organic and dye sensitized

solar cells). Its excellent properties, like high electron

mobility, long electron lifetime and a bandgap similar to

TiO2, are only some examples of its interesting

characteristics. In a vertically-aligned configuration,

ZnO nanorods (NR) are thought to transport the charges

in a efficient way and improve the contact between the

donor and the acceptor materials. We present in this

work a summary of the research work developed at our

laboratory on vertically-aligned ZnO nanostructures and

their application in Dye sensitized and organic solar

cells. We will show the different low-temperature

synthesis applied for the fabrication of vertically-aligned

nanorods, nanotrees or core-shell nanostructures based

on ZnO. We will also discuss the effect of surface

defects and the direct relation to the power conversion

efficiency of these solar cells.

Oral 1-3G-2

Invited Speaker

TiO2 nanostructure design and its

application in dye-sensitized solar

cells Ziqi Sun, Jung Ho Kim, Dou Shi Xue

Institute for Superconducting and Electronic

Materials (ISEM), University of Wollongong Titanium dioxide is one of the most important wide–

gap semiconductors and has been widely studied for use

in the areas ranging from photovoltaic/photocatalysis to

photo–/eletrochromics and sensors. Synthesis of TiO2

nanostructure with controlled size and shape is of

considerable interest, owing to that the performance of

TiO2–based devices is largely influenced by the size and

shape of TiO2 building units, especially in nanometer

scale. In this presentation, we will show our recent

results on the tunable growth of diverse morphology of

1D, 2D, and 3D TiO2 nanostructures, based on the


PGC2012


precise controlling of the starting solutions. Some

general mechanisms on the hydrothermal synthesis of

TiO2 nanostructures were also proposed, and found it

can be extended to the morphology control of other

metal oxides. As an example application of these TiO2

nanostructures, the morphology effect on the

performance of dye-sensitized solar cells was studied.

Oral 1-3G-3

Invited Speaker

Optimization of Photoanode

Materials for High-Efficiency Dye-

Sensitized Solar Cells Litao Sun

SEU-FEI Nano-Pico Center, MEMS Lab,

Southeast University Dye-sensitized solar cells (DSSCs) are a

wonderfully successful paradigm that mimics natural

photosynthesis where chlorophyll absorbs photons but

does not participate in charge transfer, which is different

from the traditional photovoltaic cells where

semiconductors assume both the functions. In DSSCs,

the dye-sensitized nanocrystalline semiconductor films

as a photoanode play a significant role in converting

photons into electrical energy. So far, various ZnO

nanostructures have been extensively investigated for

DSSCs. A few classic paradigms and new advancement

in optimizing ZnO nanostructures made by our group are

demonstrated. The effects of nanostructured films with

different morphologies/structures on the performance of

DSSCs are discussed. The advantages and the reasons of

the hierarchical ZnO nanoarchitectures and graphene-

semiconductor composites for highly efficient DSSCs

are explained.

Oral 1-3G-4

Quantum Cascade Structures for Efficient

Thermo-Photovoltaic Energy Conversion Maruf Ahmed, Delwar Hossain, Anisuzzaman Talukder

BUET

Intersubband transitions in quantum cascade

heterostructures have been proposed for thermo-

photovoltaic energy conversion for applications in solar

cells so that when they are used cascaded with p-n

junctions efficiency can be increased. The absorption

energy in an intersubband transition in quantum

heterostructures is a function of the layer thicknesses of

the well and barrier materials. Therefore, the absorption

energy in an intersubband transition based device can be

tailored to a wide range in contrast to the interband

transition based device, where the transition energy

depends directly on the energy bandgap between the

valance and conduction bands. In this work, we design

intersubband transition based heterostructures for

efficient thermo-photovoltaic energy conversion. Our

designed structures produce wider absorption spectra

and faster carrier transport than those have been reported

before.

Oral 1-3H-1

Invited Speaker

Plasmonic materials at mid-IR and

Terahertz range Jing Hua Teng

Institute of Materials Research and

Engineering, A*STAR

Noble metals are the commonly used materials for

plasmonic applications in visible to near IR frequency

range. For mid- to far-IR range, semiconductor becomes

the material of choice. In this talk, I will introduce the

use of InSb and the emerging graphene for plasmonic

applications. The electromagnetic properties of InSb in

THz frequency were studied and InSb touching disks

were fabricated and displayed broadband absorption

similar to the transformation optics prediction. A sub-

wavelength wire grating polarizer using InSb was also

demonstrated at THz frequency. Graphene is another

promising plasmonic material at mid-IR to THz range,

with unique properties of large model index, low loss

and flexibility in tuning. We investigated theoretically

the coupling between surface plasmon polaritons (SPPs)

in graphene sheet arrays, and showed a negative

coupling between SPPs as well as the applications to

optical devices like ultracompact splitters and

modulators.

Oral 1-3H-2

Invited Speaker

Surface magneto plasmons Qijie Wang, Bin Hu

School of Electrical and Electronic

Engineering, Nanyang Technological

University

At the interface between a conductor and a dielectric,

surface plasmons (SPs) are always supported in the band

below the surface plasma frequency of the conductor.

When an external magnetic field is applied, a higher SPs

band appears above the surface plasma frequency, and

both the higher and lower bands can be tuned by the

external magnetic field. Based on these properties, novel

optical devices can be designed achieving such as one

way optical filter and slow-light optical systems.

Oral 1-3H-3

Developing Ultrafast Raman Laser Sources Aravindan Warrier

Macquarie University

We aim to develop ultrafast Raman laser sources to

extend the wavelength accessibility of two important

mode-locked lasers: Ti:Sapphire & VECSELs. These

ultrafast Raman lasers generating new wavelengths can

have significant application in biophotonics.


PGC2012


Oral 1-4B-1

Invited Speaker

Highly luminescent silicate

nanoparticles obtained by spray-

drying process for biophotonics. Fabien Dubois, Josephine Zimmermann,

CéCile Philippot, Alain Ibanez

Institut Néel CNRS France We have synthesized hybrid core-shell NPs made of

organic fluorescent crystallized cores embedded in

amorphous organosilicate shells. These core-shell NPs

were obtained from sol-gel solutions sprayed

(microdroplets) and carefully dried in laminar flows to

control the formation of silicate crusts at the droplet

surfaces, followed by the confined nucleation and

growth of organic nanocrystals in the core of silicate

spheres at the end of this one-step process. The resulting

embedded organic nanocrystals exhibit diameters of

several tenths of nanometers corresponding to 105-107

packed molecules. Thus, photostability and fluorescence

emission of NPs are enhanced by several orders of

magnitude compared to those of single fluorescent

molecules. We obtained ultrabright nanoemitters for in-

vivo two-photon fluorescence cerebral imaging of mice

microvasculatures (tumor angiography). Through the

same process, we can avoid the degradation of rare earth

complexes in water media by their encapsulation in

silicate NPs for in vitro imaging.

Oral 1-4B-2

Invited Speaker

Confocal Fluorescence Spectral

Imaging Technique and its

Applications to Drug Development Alexey Feofanov

Shemyakin-Ovchinnikov Institute of

Bioorganic Chemistry, RAS; Lomonosov

Moscow State University A spectral analysis that is widely used to study

molecular interactions in solutions can be transferred to

cellular and tissue levels and is a basis of a confocal

spectral imaging (CSI) technique. The technique is a

potent tool to deconvolve overlapping spectra of

fluorophores in a specimen, to discriminate weak signals

of fluorophores interfering with cellular

autofluorescence and to study molecular interactions of

drugs within living cells. The CSI technique measures a

two-dimensional set of spectra with a three-dimensional

spatial resolution from a tissue section or an intact living

cell treated with a fluorescent drug and analyzes it in

order to: identify and map molecular interactions of the

drug; quantify accumulation, localization and retention

of the drug in the specimen. Features of the CSI

technique are illustrated with our data obtained in the

course of development and studies of advanced agents

for photodynamic and boron neutron-capture anticancer

therapies.

Oral 1-4B-3

Plasmon-Enhanced Whispering Gallery Mode

Biosensing Frank Vollmer

Max Planck Institute for the Science of Light

Whispering gallery mode (WGM) biosensors derive

their unprecedented sensitivity for label-free detection of

biomolecules from the high-quality (Q) factor of an

optical resonance phenomenon. Plasmonic excitations in

metal nanostructures which are able to localize the

WGM field at the target binding site can further enhance

sensitivity by local electric field amplification. Random

nanoparticle layers and nanopost antennas are

investigated for this purpose. An efficiency parameter is

introduced to quantitate the local field overlap with

analyte molecules, a pre-requisite for single molecule

detection.

Oral 1-4B-4

Development of multiplexed silicon dual

microring sensor for the detection of bladder

cancer biomarkers Kyung Woo Kim, Junfeng Song, Qing Liu, Yong Shin, Mi

Kyung Park

Institute of Microelectronics, A*STAR (Agency for Science,

Technology and Research)

We propose an efficient multiplexed sensing system

for detecting bladder cancer biomarkers without

invasiveness, labeling, and high cost using a silicon-

based dual microring resonator biosensor. The dual

microring biosensor consists of a sensing microring and

an electrical tracing microring. The working principle of

the sensor is that a resonance wavelength shift of sensing

ring is induced by the refractive index change resulted

from biomarker binding to the ligand on the sensing

microring. Then, the shift is traced and determined by

the tracing ring through direct voltage supply. Also, we

have shown the specific detection of HER-2 protein

which is known as one of bladder cancer biomarker

using the dual microring sensor.

Oral 1-4B-5

Light Scattering and Colour Generation in

Exoskeletons of Jewelled Beetles Valyukh Sergiy, Arwin Hans, Järrendahl Kenneth

Laboratory of Applied Optics, IFM, Linköping University

The present work is devoted to investigation of light

interaction with the periodical arrangement in the cuticle

nanostructure of jewelled beetles. Spectral and spatial

distributions of the reflected light are simulated and

compared with the results of measurements obtained be

means of spectral ellipsometry. The numerical analysis

is performed using the finite difference time domain

method. We demonstrate that the bent helicoidal

periodical structure of the beetles gives wider spectrum

of selective reflection than the same structure with the

flat profile. Optical characteristics in terms of colours

are discussed.


PGC2012


Oral 1-4C-1

Invited Speaker

A new approach to a practical

subwavelength-resolving

microscope Yi-Chen Chuang, Richard Dudley, Michael,

Fiddy

Nanyang Technological University Superresolution depends on near field capture and

transfer of high spatial frequencies from the object.

These evanescent waves are transferred to a near field

image domain using a negative index material. Scanning

images with subwavelength-scale resolution in the near

field is problematic due to object-lens-image coupling

phenomena. An approach based on compressive

sampling using a single fixed detector is presented. An

image-bearing wavefront is projected onto a series of

patterns (basis functions) and the transmitted light

integrated onto a single point detector. Image

reconstruction is possible by weighting each basis

function with its measured coefficient and summing; we

evaluate this procedure using projected scattered fields

which include evanescent waves. A single fixed detector

is located in the back focal plane of negative index

concave lens and the basis functions are realized by

structured illumination from a set of sources. We will

report our results.

Oral 1-4C-2

Invited Speaker

Plasmonic nanorod metamaterials

for nanophotonics Anatoly V Zayats

Department of Physics, King‘s College

London

Guiding and manipulating light on length scales

below the diffraction limit requires structural elements

with dimensions much smaller than the wavelength.

Recently, novel plasmonic metamaterial has been

developed based on arrays of aligned gold nanorods

grown in self-assembled anodic aluminium oxide

templates. This metamaterial provides a flexible

platform with tuneable resonant optical properties across

the visible and telecom spectral range,that can be

specifically designed by changing the length, diameter

and separation between the nanorods. Such

metamaterials, with a controllable and engineered

plasmonic response, can be used instead of conventional

plasmonic metals for designing plasmonic waveguides,

plasmonic crystals, label-free bio- and chemo-sensors

and for development nonlinear plasmonic structures with

the enhanced nonlinearities. In this talk we will

overview fundamentals and applications of plasmonic

plasmonic nanorod metamaterial for designing new

types of nanoscale waveguides, biosensing platforms

and nonlinear optical devices.

Oral 1-4C-3

Invited Speaker

Plasmonic manipulation through

light control and its applications in

microscopic imaging and sensing Xiaocong Yuan

Nankai University, Tianjin, China

We report on recent development of surface plasmon

polaritons (SPP) excited by a highly focused optical

beam and its new applications in surface plasmon

resonance (SPR) sensing and imaging. The proposed

method reveals dynamic, reconfigurable and high-

efficiency advantages. Two excitation schemes for high-

resolution wide-field fluorescence microscopy by using

SPP standing waves are implemented experimentally,

where optical vortex beam and sub-wavelength grating

slits are employed respectively to generate SPP standing

wave interference patterns whose lateral shift can be

controlled at subwavelength steps with respect to the

specimen. These high spatial frequency standing waves

are served as excitation profiles for super-resolved

imaging. Experimental results reveal an achievement of

0.25spp optical resolution, a factor of twofold

improvement compared with the standard total-internal-

reflection fluorescence (TIRF) microscopy. The tightly

focused radially polarized beam based on the TIRF

configuration has also been employed in sensing and

Raman spectroscopy with enhancement.

Oral 1-4D-1

Invited Speaker

Plasmonics Enhanced Scattering in

Photonic Crystal Fibers Xia Yu

SIMTech

We report the amplification effect of surface

enhanced Raman scattering (SERS) in a solid-core

photonic crystal fiber. Offset launch method is for the

first time employed to introduce extra enhancement in

the intensity of SERS signals, as compared to the

conventional core launch method. A theoretical analysis

on modal field distribution for both launching conditions

is carried out to account for such improvement. It shows

that by adjusting the launching position of laser beam

from the solid fiber core to an air hole in the cladding,

overlap of the excited mode with Au NPs has been

increased significantly. The SERS probe is demonstrated

to achieve a detection limit as low as 100nM in

concentration, which shows great potential for detection

of biomolecules both in vivo and in vitro.

Oral 1-4D-2

Broadband, Coherent Mid-IR Supercontinuum

Generation using Highly Nonlinear Tapered

Photonic Crystal Fibers Amine Ben Salem, Rim Cherif, Mourad Zghal

University of Carthage, Engineering School of Communication

of Tunis (Sup‘Com)


PGC2012


We design tellurite and As2S3-based chalcogenide

tapered photonic crystal fibers for broadband coherent

mid-infrared supercontinuum generation in the few

optical-cycle regime. We optimize the soliton self-

compression by injecting pre-chirped femtosecond

pulses. We generate more than one octave-spanning SC

spectra in 8 mm-long TPCF with low input pulse

energies.

Oral 1-4D-3

Optically switchable all-fiber optic polarizer Ching-Yun Huang, Wei-Huan Fu, Vincent K. S. Hsiao

National Chi Nan University

We demonstrates an optically switchable all-fiber

optical polarizer based on a side-polished fiber (SPF)

overlaid with a photoresponsive liquid crystal (PLC)

containing a nematic LC and a photosensitive

azobenzene molecule. The trans-cis photoisomerization

of azobenzene modulates the overlaid LC‘s

birefringence, changes the refractive index (RI) of the

PLC-overlaid SPF, and further controls the polarization

of light propagating within the fiber.

Oral 1-4D-4

Ultra-Flattened Near-zero Dispersion PCF

Using Selective Liquid Infiltration: A new study

with four air-hole rings Partha Maji, Partha Roychaudhuri

IIT Kharagpur

We report here new results of chromatic dispersion

in Photonic Crystal Fibers (PCFs) through designing the

index-guiding triangular-lattice structure by selectively

infiltrating the first air-hole ring with index-matching

liquid. Our proposed structure can be implemented for

both ultra-low and ultra-flattened dispersion in a wide

wavelength range. The dependence of dispersion

parameter of the PCF on infiltrating liquid indices, hole-

to-hole distance and air-hole diameter are investigated in

details. The results establish the design of ultra-flat

dispersion of <0±1.0ps/ (nm.km) achievable over a

bandwidth of 400-614nm in the wavelength range of

1.30 µm to 1.95 µm. Six such designs with infiltrating

liquid are proposed for near-zero ultra-flat dispersion

realization.

Oral 1-4D-5

Light-induced waveguides in chiral nematic

liquid crystals Miroslaw Karpierz,

Warsaw University of Technology

Spatial solitons are self-trapped light beams where

diffraction is counterbalanced by the optical nonlinearity.

Creation of spatial solitons is equivalent to creation of

optical waveguides by light itself. Spatial solitons can be

used to create reconfigurable optical circuits created by

light alone where all-optical switching or processing is

achieved through the evolution and interaction of the

many soliton beams. In nematic liquid crystals it is

possible to generate spatial solitons called nematicons, at

relatively low powers.

In this presentation nematicons formation in chiral

nematic liquid crystals are taken into account. In such

media for linearly polarized beam propagating

perpendicularly to the helicoid axis, the refractive index

varies periodically across the sample. Due to the strong

reorientational nonlinearity beam diffraction is

diminishing, leading to self-localisation and formation of

reconfigurable optical waveguides. Experimental and

theoretical results show that the interaction between such

solitons allows to redirecting and steering of optical

signal.

Oral 1-4D-6

Photonic Crystal Fiber Strain Sensors for

Laparoscopic Surgical Devices Sunish Mathews, Dean Callaghan, Yuliya Semenova, Ginu

Rajan, Gerald Farrell

Dublin Institute of Technology

Miniature photonic crystal fiber strain sensors with a

typical size ~ 200 µm are fabricated and employed as

force measurement sensors for a laparoscopic surgical

device. The strain transfer characteristics and strain

sensitivity of photonic crystal fiber interferometric

sensors fixed onto the clipping arm of a commercial

endoscopic clip applicator are studied and presented.

Oral 1-4D-7

Fabrication and Development of Flat Fibers Katrina D Dambul

Multimedia University

This paper reports the parameters that affect the

fabrication of Flat Fibers, including preform size and

doping, furnace temperature, preform feed speed, fiber

drawing speed, fiber dimension, fiber quality and shape,

vacuum pressure and core dimension. The feed and draw

speed generally follows the simplified mass

conservation law to draw the fiber to a specific

dimension. The preform wall thickness affects the

vacuum pressure and furnace temperature that is needed

to ‗flatten‘ the fiber. The preform wall thickness is

directly proportional to the volume of glass inside the

neck-down region. The wall thickness of the preform

and its dopant will also affect the size of the core

dimension. Finally, some issues associated with the

fabrication of Flat Fibers are also observed and

discussed, including fabrication of Flat Fibers with non-

uniform dimensions, deformed shapes, unwanted

airholes and poor quality of the Flat Fibers.

Oral 1-4E-1

Invited Speaker

Planar Photonics for CMOS

Integration David Cumming, Timothy Drysdale, James

Grant, Iain Mccrindle, Kirsty Walls

Glasgow University


PGC2012


Metamaterial and surface plasmon resonance

structures lend themselves well to different regions of

the electromagnetic spectrum as a consequence of the

properties of the materials from which they are made

and structures that are implemented. Both methods lend

themselves well to planar fabrication and integration on

to CMOS microelectronics technologies for use in image

sensors. In this paper we describe the design and

implementation of filters and absorbers in the visible and

terahertz bands using thin metal films to exploit

metamaterials and SPR.

Oral 1-4E-2

Readout Integrated Circuit with Dual Mode

Design for Infrared Focal Plane Array Photo-

detector Yi-Chuan Lu, Tai-Ping Sun, Hsiu-Li Shieh, Shiang-Feng Tang,

Wen-Jen Lin

National Chi Nan University

This paper presents the readout circuit based on

Direct Injection (DI) and Capacitive Transimpedance

Amplifier (CTIA). The hybrid type of CTIA and DI was

adopted as the pixel circuit‘s design in this paper. The

two different structures were combined into unit pixels,

and each pixel has two modes of readout. Furthermore,

the chip was produced with TSMC 2P4M 5V technology,

and the array size is 10X8. The output swing is 2.1V and

power consumption is 9.4 mW, according to

measurement results. The Layout area is 40um x 40um,

and the two modes are selected by an external pin. The

dual mode structure enables single- and dual-band

infrared sensors. The readout chip can operate in 2kHz ~

6MHz, and the input photocurrent range is 1pA ~ 50nA,

depending on integration time; thus, it can be suitable

for various detectors.

Oral 1-4E-3

GaSb-based integrated lasers and

photodetectors on a Silicon-On-Insulator

waveguide circuit for sensing applications in the

shortwave infrared Nannicha Hattasan

Photonics Research Group, INTEC-imec, Ghent University

We report integrated InGaAsSb (grown lattice-

matched on a GaSb substrate) photodetectors on SOI

and integrated Fabry-Perot (FP) lasers. The epitaxial

layers are transferred onto the Si waveguide circuit by a

die-to-wafer bonding process using Benzocyclobutene

(BCB) as the bonding agent. The substrate is completely

removed before device processing. For photodetectors,

we study two light coupling techniques from the SOI

waveguide circuit to the integrated photodetector:

evanescent coupling and grating-assisted oupling. High

responsivity (>1A/W) of the evanescent photodiode and

0.4 A/W for grating-assisted coupling at 2.2µm is

achieved. The dark current is ~4µA at -1V.

We also demonstrate thin-film GaSb-based FP lasers

integrated on a carrier substrate. The 15 µm x 400 µm

device operates at ~2.02 µm wavelength in continuous

wave at room temperature. A threshold current of ~31

mA in pulse regime and 49.7 mA in continuous wave are

achieved. The integrated laser operates up to 35°C.

Oral 1-4E-4

Thermal-tunable microring resonator-based

WDM optical receiver for on-chip optical

interconnect Xianshu Luo, Junfeng Song, Qing Fang, Xiaoguang Tu, Tsung-

Yang Liow, Mingbin Yu, Guo-Qiang Lo


Silicon photonics has been attracting a lot of

research interests due to the merits of large-bandwidth

operation, low-power consumption and low cost. It is

believed silicon photonics is one of the promising

alternatives for on-chip optical interconnect in future

high-bandwidth low-power computing systems. The

wavelength-division multiplexing (WDM) technology

provides a way to further increase the data capacity. In

this paper, we present a thermally tunable microring

resonator-based multiple-channel optical receiver

integrating multiple microring resonator as the WDM

demultiplexing and Ge photodetector for single

detection. We fabricated 4-channel and 10â€―channel of

such WDM receivers using CMOS-compatible

fabrication process. We show that with the thermal

tunability, the channel wavelengths can be adjusted to

align with the selected channel grid. Proof-of-principle

demonstrations using 4-channel receiver shows up to

160 Gbit/s date transmissions with high data quality.

Characterization of 10-channel 400-Gbit/s data

transmissions is on-going.

Oral 1-4E-5

Invited Speaker

Silicon photonics for on-chip optical

interconnects and optical trapping Andrew W. Poon, Shaoqi Feng , Ting Lei,

Hong Cai, Jiawei Wang, Yu Li

The Hong Kong University of Science and

Technology In this talk we will review our progress in

developing silicon photonic devices for on-chip optical

interconnects and optical trapping.

In the optical interconnects front, we will discuss

silicon coupled-microring resonator-based electro-

optical switches and silicon linear-absorption microring-

resonator-based photodiode detectors. The coupled-

microring resonators enable the tailoring of the

resonance-based switching performances. The

microring photodiodes enable the detection of small

photocurrents due to cavity-enhanced surface-state-

absorption.

In the optical trapping front, we will discuss on- and

off-chip optical trapping and manipulation of dielectric

microparticles using silicon photonics. For on-chip

particle manipulation, we will illustrate planar optical

tweezers using silicon-nitride waveguide junctions. We

will also discuss wavelength-controlled particle

buffering and dropping using silicon-nitride microring


PGC2012


resonator-based add-drop filters. For off-chip particle

manipulation, we will illustrate the generation of two-

dimensional arrayed optical traps using silicon

multimode-interference-based square-core waveguides.

Oral 1-4F-1

Invited Speaker

Application of Nitride-based

Semiconductor Materials to High

Speed THz Photodiode AuréLien Gauthier-Brun , Jing Hua Teng,

Elhadj Dogheche, Liu Wei, Anisha Gokarna,

Masayoshi Tonouchi, Didier Decoster , Soo

Jin Chua

IEMN, Institute of Nanotechnology Lille

France InGaN compound is a promising ternary alloy

system that receives a lot of attentions thanks to its

tunable bandgap that varies from near infrared to near

ultraviolet regions. InGaN/GaN materials have been

widely used in various applications like high efficiency

solar cells, high-brightness blue to green LED as well as

non-phosphor based direct white light generation. Its

unique set of properties of this material also makes it a

suitable candidate for a number of other new

applications. However, to design efficient InGaN-based

devices, it is a prerequisite to know the optical properties

of InGaN films at frequencies of interest and there is

currently very little information on the index of InxGa1-

xN with x>0.07. In this work, we study and characterize

the optical indices of InxGa1-xN films grown by

MOCVD with indium concentration varying up to

x=0.14. We discuss the design and fabrication process of

an InGaN-based ultrafast terahertz photodiode.

Oral 1-4F-2

InGaAsP/InGaP QW Structures Multi-

Wavelength High Power Laser Diode Using

Quantum-Well Intermixing Zhongliang Qiao, Xiaohong Tang, Eng Kian Kenneth Lee,

Peng Huei Lim , Baoxue Bo

School of Electrical and Electronic Engineering, Nanyang


Post-growth bandgap tuning of an InGaAsP/InGaP

QW high power semiconductor lasers structures was

carried out by employing QW intermixing, which was

carried out by depositing SiO2 thin film on the samples

and following annealing at 750°C. High power laser

device has been fabricated with the sample after the

post-growth bandgap tuning and the blue shift of the

lasing wavelength of the LDs has been studied.

Oral 1-4F-3

Comparison of First and Second Annealing GaN

Photocathode Xiaohui Wang

Department of Electronic Engineering and Optoelectronic

Technology

We anneal GaN samples in ultra high vacuum

system for two times at the same temperature of 710°C,

and activate the sample after each heating by Cs/O. The

vacuum level, residual gas, QE, and photocurrents are

compared. We find, for the 1st annealing vacuum level

line has a shape of ‗W‘, but the 2nd looks like ‗V‘. The

residual gases include H2, H2O, N2, and CO2 mainly.

Nothing else has been detected significantly. For the 1st

annealing, there are two stages the residual gases come

out quickly, but nothing comes out until the maximum

temperature during the 2nd annealing. Before activation,

the photocurrent after 2nd heating is higher than the 1st,

which shows the stability of GaN. No obvious difference

of QE has been found between the two times annealing,

and more researches will be done on this topic.

Oral 1-4F-4

Full spectrum millimeter-wave LiNbO3 electro-

optic modulator Julien Macario, Peng Yao, Shouyuan Shi, Alicia Zablocki,

Charles Harrity, Richard D. Martin, Christopher A. Schuetz,

Dennis W. Prather

University of Delaware

Electro-optic modulators represent key components

for encoding and transmitting data over optical fibers. In

recent years, the development of new lithium niobate

electro-optic modulator designs and material processing

techniques have contributed to support the increasing

need for faster optical networks by considerably

extending the operational bandwidth of modulators.

Accordingly, 10 Gb/s and 40 Gb/s optical networks are

now standard, whereas 100 Gb/s network are being

tested and implemented. In an effort to increase the

bandwidth for future generations of networks, we have

developed a lithium niobate electro-optic phase

modulator based on a coplanar waveguide ridged

structure that operates up to 300 GHz. A determining

factor to the creation of optical sideband modulation in

the millimeter-wave range is the thickness of the lithium

niobate substrate. By thinning the substrate down to less

than 39 µm, we are able to eliminate substrate modes

and observe sidebands over the full millimeter-wave

spectrum.

Oral 1-4F-5

Novel Wireless Millimeter-Wave to Lightwave

Signal Converters by Electro-Optic Crystals

Suspended to Narrow-Gap-Embedded Patch-

Antennas on Low-k Dielectric Substrates Yusuf Nur Wijayanto, Hiroshi Murata, Yasuyuki Okamura

Osaka University

We propose a new wireless millimeter-wave (MMW)

to lightwave (LW) signal converter using an electro-

optic crystal suspended to narrow-gap-embedded patch-

antennas on a low-k dielectric substrate. Wireless MMW

signals can be received by the patch-antennas and

converted to LW signals by use of the MMW electric

field across the narrow-gap for electro-optic (EO)

modulation. An aperture area of the patch-antennas is

about 4 times larger than that fabricated on a high-k EO

crystal only as the substrate. The MMW electric field


PGC2012


across the narrow-gap of the proposed converter also

becomes 10-times stronger than that using the high-k

dielectric EO substrate. Therefore, the conversion

efficiency enhancement of approximately 20 dB can be

obtained using the proposed device. It is compact,

passive, and operated with extremely low MMW

distortion in high-speed radio-over fiber communication

and measurement systems.

Oral 1-4F-6

Investigation of Structural, Morphological and

Optical Properties of GaN/AlGaN

Heterostructures on Si Irma Saraswati, Elhadj Dogheche, Didier Decoster, Nji Raden

Poespawati, Retno Wigajatri, Suk-Min Ko, Y.H. Cho, Dimitris

Pavlidis

IEMN, Institute of Electronics, Microelectronics and

Nanotechnology, UMR 8520 CNRS,Université de Lille 1

A good justification for gallium nitride on silicone is

the potential for integrated optoelectronic circuits and

for the low cost bring by growth of GaN on a large size

wafers. Actually, the application interest for GaN/Si is

power electronics. This work focused on the

optimization of the growth process for GaN/Si and the

relation between the structure and the optical properties.

Using the guided wave prism coupling technique, we

have fully established the index dispersion of GaN at

room temperature and its temperature dependence in the

wavelength range 0.4 to 1.5µm. We report a slightly low

temperature dependence. Results demonstrated excellent

waveguide properties of GaN on silicon with optical

propagation loss below 1dB/cm. We compared the

results on Si with those on sapphire. This opens a real

opportunity of future device using this technology.

Oral 1-4G-1

Invited Speaker

Solar-driven photoelectrochemical

water splitting with vertically

aligned Ta3N5 nanorod arrays Yanbo Li, Kubota Jun, Kazunari Domen

The University of Tokyo Direct conversion of solar energy into storable fuels

such as hydrogen has significant potential in providing

clean and sustainable energy source.

Photoelectrochemical (PEC) water splitting is a

promising approach to converting solar energy into

hydrogen. In this report, photoelectrodes consisted of

vertically aligned Ta3N5 nanorod arrays have been

fabricated for PEC water splitting. Ta3N5 is a suitable

photoelectrode material for PEC water splitting because

of its proper band positions for water reduction and

oxidation, broad visible light absorption spectrum, and

stability in an aqueous environment. Meanwhile, the

vertically aligned nanorod structures have been proved

to show enhanced light absorption, reduced optical

reflectance, better carrier collection efficiency, and large

surface-to-volume ratio rendering more reaction sites.

The fabricated photoanodes, taking advantage of the

material merit of Ta3N5 and structural merit of vertically

aligned nanorods, show high performance in PEC water

splitting.

Oral 1-4G-2

Invited Speaker

Double Textured Front and Back

Surface for Light Trapping in a

Solar Cell S. M. Iftiquar

Sungkyunkwan University Light trapping scheme is an important part of solar

cell design, which has been implemented in a textured

front and back surface of a solar cell. We investigated

single as well as double textured front as well as back

reflectors of solar cells. Micrometer sized square based

pyramidal textured c-Si wafer substrates were used to

deposit nano textured silver metal layers, predictable by

the structure zone model (AZM). Atomic force

microscopic and electron microscopic images show a

systematic variation in nano texture, consistent with the

SZM. A thin ZnO:Al layer was deposited over the metal

layer for back reflector. Another substrate of textured

SnO2:F coated glass was used to deposit nano textured

ZnO:Al layer for front electrode of the solar cell. We

have observed an increased haze factor with increased

nano texturization that was also associated with

improved solar cell performance.

Oral 1-4G-3

Invited Speaker

Solution Processable TiOx Thin

Films for Photovoltaic Applications Jiguang Li

University of Virginia

Photovoltaic is currently expensive among

renewable energy sources. Organic solar cells (OSC) can

induce substantial manufacturing cost reduction.

Simplifying the current processing techniques can also

reduce the cost. We will present the application of a

solution processable TiOx in low cost OSCs and Si solar

cell.

We will report the TiOx thin film protection

mechanism for OSCs, which was analyzed by

photovoltaic parameters changes as well as IR and ESR

spectroscopy. Distribution of the local photocurrent

degradation obtained by laser beam induced current

measurements will be shown. Further improvement of

the TiOx properties was achieved by Fe doping. The

improvement in the OSC will be presented.

High efficiency Si solar cells with TiOx thin film as

low cost effective anti-reflection coating and surface

passivation layer have been fabricated. The surface

passivation quality was evaluated by near-surface

lifetime measurement.

Oral 1-4G-4

Electronic Energy Transfer and Carrier

Dynamics in CdSe/CdTe Binary Nanocrystals Guozhong Xing


PGC2012


School of Materials Science and Engineering, The University

of New South Wales, Australia

Envisioned as emerging building blocks for

photovoltaic devices, semiconductor nanocrystals (NCs)

possess unique properties determined by the quantum

confinement effect. A synergetic combination of CdSe

and CdTe NCs offers favorable conditions for the charge

separation of photoexcited carriers at the interface due to

the type II alignment of their conduction and valence

bands. Aiming to synthesize binary NCs system creates

the possibility for electron and hole transporting with

maximal interfacial area, benefiting NC chemistries with

high extinction coeficients and providing an excellent

tool for nanoscale design of light absorbing. We report

on the systematic UV/Vis absorption, steady state and

time resolved photoluminescence experiments reveal the

energy transfer dynamics between the neighboring NCs

in CdSe/CdTe system. This work demonstrates that

efficient energy transfer can be achieved through

engineering binary NCs with tunable particle size and

band structure modulation, which may find potential

applications as solar energy conversion devices.

Oral 1-4H-1

Invited Speaker

The effect of electrical stimulation

on the brain system Minah Suh

Sungkyunkwan University

Electrical stimulation has been popular alternative

therapeutic technique for various neurological diseases.

The electrical stimulation may induce activation of

neurons near the stimulation sites and therefore inducing

neuromodulatory effect. Electrical stimulation may also

facilitate the neural cell‘s outgrowth, alignment and

migration pattern. In addition, the electrical stimulation

modulates the cerebral blood flow and metabolism. The

efficacy of electrical stimulation regime on various

neurological disorders, including epilepsy and

Parkinson‘s disease, has been heavily investigated, yet

the exact mechanism of direct electrical stimulation is

still unknown. We discuss the effect of electrical

stimulation on the neural system: ranging from in vitro

to in vivo studies. We introduce a new transparent

electrode for effective delivering electrical stimulation

onto the neural cells and also present the systematic

hemodynamic changes in relation to the electrical

stimulation. In vivo intrinsic signal optical imaging and

near-infrared spectroscopic imaging data will be

presented alongside with electrochemical sensor.

Oral 1-4H-2

Non-invasive Hemodynamic Response

Monitoring of Chlorin e6-mediated

Photodynamic Therapy Using Diffuse Optical

Measurement Jing Dong, Hui Jin Toh, Renzhe Bi, Patricia S. P. Thong,

Khee-Chee Soo, Kijoon Lee


Photodynamic therapy (PDT) is an emerging local

treatment optionfor malign tumors. There are three

factors involved treatment efficacy, namelytreatment

light dose, photosensitizer dose and tissue oxygenation

level. Different treatment conditions may result in

different tumor response, thus response monitoring is

important for optimizing PDT efficacy. In this paper, we

demonstrate a novel multimodal monitoring system

incorporating both diffuse correlation spectroscopy

(DCS) and diffuse optical spectroscopy (DOS), which

enables monitoring of both relative blood flow (rBF) and

tissue oxygenation (StO2). Mouse models bearing

xenograft tumors were subjected to PDT, where chlorin

e6 (Ce6) was used as the photosensitizer. The overall

pattern in the time course of rBF and StO2 values were

examined with varying PDT treatment parameters. The

results clearly show that multimodal diffuse optical

monitoring is a promising tool that provides valuable

information for early prediction of PDT treatment

efficacy.

Oral 1-4H-3

Hemodynamic Responses to Odor Stimulation

in the Main Olfactory Bulb of Rats using NIRS Seungduk Lee, Jaewoo Shin, Hwan Gon Lee, Jae-Hong Park,

Changkyun Im, Choong-Ki Kim, Hyung-Cheul Shin, Beop-Min

Kim

Korea University

Odorant receptors in olfactory bulb are specialized to

recognize physicochemical features such as chemical

structures of odorant molecules, which are then

translated into neural signals. In this study, we tested

whether the hemodynamic responses in the olfactory

bulb can be used to distinguish different odorants

including plain air as a reference (Blank), 2-Heptanone

(HEP), Isopropylbenzene (IB), Isoamyl acetate (IAA)

and 1-Pentanol (PEN). Our results show that odor-

specific changes have regional dependency inside the

olfactory bulb. Also, it was found that the temporal

fluctuations of oxy-hemoglobin for various odorants

could be additional marker for odor discrimination.

Considering the good temporal resolution, we believe

that NIRS may be useful for real-time interpretation of

various odorants.

Oral 1-4H-4

Role of hemodynamic parameters measured

with diffuse optics for diagnosis and therapy

monitoring of human breast cancer Regine Choe, David Busch, Turgut Durduran, Arjun Yodh

University of Rochester

Diffuse optical methods have a great potential to

improve diagnostic accuracy and assess therapeutic

efficacy of breast cancer, by providing quantitative

hemodynamic/tissue scattering of cancerous and

surrounding healthy breast tissues. In order to explore

whether hemodynamic/tissue parameters can aid (1)

diagnosing a malignant cancer, and (2) predict cancer


PGC2012


therapeutic efficacy, we have conducted two sets of in

vivo clinical pilot studies. In the first study, average

relative blood flow at the center of malignant cancer was

found to be around two times higher than that of

surrounding tissue for 26 subjects. In the second study,

we measured 13 subjects undergoing neoadjuvant

chemotherapy at four time points: before, 1-2 days after

initial therapy, inter-regimen, and post-treatment time

points. Relative total hemoglobin concentration at the

inter-regimen time in responding group was significantly

lower than those in non-responding and healthy groups,

demonstrating hemodynamic parameter could predict

therapeutic efficacy.

Oral 1-4H-5

Theoretical investigation of near-infrared light

path in multi-layer brain models for three DOT

systems Xiaowei Zhou

NUS

The optical path of near-infrared light propagation in

multi-layer brain models was investigated by theoretical

and computational analysis for three DOT systems. The

brain models comprised a three-layer slab or three-layer

semi-sphere. In each model, the light penetration depths

and the shapes of light paths for different source and

detector pairs were analyzed with a numerical diffusion

forward model based on the finite element method. The

simulation results revealed that the light path was

affected by source and detector distance, and varied in

the different brain models. Specifically, the effective

penetration depths were different for the different DOT

systems and deeper penetration depth was observed

using a fast time-domain DOT system.

Oral 1-4H-6

A numerical method for simulating noncontact

diffuse reflectance measurements in epithelial

cancer Caigang Zhu, Quan Liu

School of Chemical and Biomedical Engineering,

Nanyang Technological University, Singapore

Lens based setup has been explored for non-contact

diffuse reflectance measurement to reduce the

uncertainty due to inconsistent probe-sample pressure.

However, there have been no reports in the literature on

modeling noncontact diffuse reflectance setup

numerically for depth selective diffuse reflectance

measurements to our best knowledge. In this study, we

first present a flexible Monte Carlo method to model

non-contact diffuse reflectance measurements in lens

based setups. Then this method is used to simulate non-

contact diffuse reflectance measurements from a

squamous cell carcinoma (SCC) tissue model. By

adjusting the focal depth of the imaging lens, depth

selective measurements could be achieved.

Oral 1-4H-7

Spatial Diffuse Correlation Spectroscopy For

Depth Selective Flow Measurement Renzhe Bi, Jing Dong, Kijoon Lee


Diffuse correlation spectroscopy (DCS) is an

emerging non-invasive technique that probe blood flow

dynamics inside deep tissue, such as muscle and brain.

Traditional DCS takes use of autocorrelation of the

fluctuation intensity signal from single point, and the

setup, which includes single photon detector and

hardware correlator, is relatively expensive. We build a

non-contact spatial diffuse correlation spectroscopy

(SDCS) based on analysis of spatial correlation of

diffuse laser speckle pattern. This setup takes advantage

of high sensitivity CCD, and can achieve depth selective

flow measurement by single capture. Both phantom

study with controlled flow speed and in vivo experiment

result are exhibited. Our study shows that it is a cost

effective method to achieve depth selective perfusion

measurement.

Oral 2-1A-1

Invited Speaker

Optical properties of metamaterials

near optical wavelengths Bruno Gallas

Institut des NanoSciences de Paris (INSP),

CNRS-Université Pierre et Marie Curie, 4

place Jussieu, Paris

Metamaterials are composed of arrays of plasmonic

resonators engineered as to induce new optical

properties. Generally, the medium is anisotropic and the

effective optical properties are described by tensors. The

elements of the tensors account for different effects near

the plasmon resonances: electric multipoles, magneto-

electric coupling in ordered arrays and spatial dispersion.

It is then necessary to determine the relative contribution

of each effect on the optical properties. The inspection

of the Berreman‘s characteristic matrix of the

metamaterial layer allows assessing the sensitivity of

measurements to the different tensors. Thus, particular

measurement conditions can be defined to determine

unambiguously the origins of the optical properties of

metamaterials.

We will illustrate this analysis in the case of U

shaped resonators. By comparing measurements

performed along different directions and incidences, we

will discuss the relative magnitude of the different

effects and present the spectral dependence of the

different optical tensor elements.

Oral 2-1A-2

Transversely Quasicrystallographic 3D Photonic

Chiral Lattices: Polarization-sensitive Complex

Photonic Band gap structures Jolly Xavier, Joby Joseph


We present complex transversely

quasicrystallographic 3D chiral lattices combining the


PGC2012


promising properties of photonic quasicrystals (PQC) as

well as photonic spiral crystals. As the photonic band

gap (PBG) becomes more symmetric as well as the

directional tunability is enhanced in PQCs, transversely

PQC structure would give an additional degree of

freedom for transversely PQC 3D chiral lattices in

tuning frequency as well as polarization band gaps for

optimized polarization sensitive integrated devices. On

the one hand we fabricate diverse transversely PQC 3D

chiral lattices in photoresist through programmable

spatial light modulator-assisted optical phase

engineering-based multiple beam interference approach

and experimentally analyze the fabricated lattices. At the

same time we computationally simulate transversely

PQC 3D chiral lattices and investigate the PBG as well

as polarization band gap tunability in such structures

together with a comparative transmission and reflection

spectral analysis in view of their applications in new

generation integrated photonic devices.

Oral 2-1A-3

Optical Function Generator based on Cascaded

Nonlinear Mixing in a Photonic Crystal Han Sung Chan, Zhi-Ming Hsieh, Lung-Han Peng, Andy Kung

National Tsing Hua University

Non-sinusoidal optical fields of various shapes are

synthesized by using a nonlinear photonic crystal to

generate a harmonic comb and using an ultrabroad-band

acousto-optic modulator to modulate the field

amplitudes and phases of the comb. The resulting device

is a compact all solid-state system that could lead to the

realization of a portable arbitrary optical waveform

synthesizer that is analogous in many aspects to a RF

function generator.

Oral 2-1A-4

Optically-Driven Deposition of Carbon

Nanotubes on Erbium-Doped Fibers for Short-

Cavity Passively Mode-Locked Fiber Lasers Huan Huan Liu, Kin Kee Chow


Technological University

We demonstrate optically-driven deposition of

carbon nanotubes (CNTs) on erbium-doped fiber (EDF)

facets for passively mode-locked fiber laser applications.

A 21-dB difference in the reflectometry is observed

showing successful deposition of CNTs. A passively

mode-locked fiber laser incorporating the EDF with

facet deposited with CNTs is constructed.

Oral 2-1A-5

Fabrication Zirconia-Erbium Doped Fibers and

Its Application in the Generation of Non-Linear

Phenomena and Compact Pulsed Fiber Laser

Systems H. Ahmad, K. Thambiratnam, M. C. Paul, A. Z. Zulkifli, S. W.

Harun

Photonics Research Centre, University of Malaya, Malaysia

Zirconia-Erbium co-Doped Fibers (Zr-EDFs) are a

novel type of fiber with very high erbium ion

concentrations of around 3000 ppm. This allows the Zr-

EDF to exhibit high gains, similar to much longer

lengths of conventional erbium doped fibers. The

Modified Chemical Vapor Deposition technique is used

to fabricate the initial preforms, followed by solution

doping to incorporate the glass modifiers and nucleating

agents. Two preforms, ZEr-A and ZEr-B, are fabricated

with erbium ion concentrations of 2800 and 3888

ppm/wt as well as absorption rates of 14.5 and 18.3

dB/m at 980 nm respectively are fabricated and drawn

into fiber strands with a 125.0 ± 0.5 µm diameter. Due to

its higher erbium dopant concentration, a 4 m long ZEr-

B is used to demonstrate the non-linear characteristics of

the Zr-EDF by the generation of the Four-Wave-Mixing

(FWM). A maximum FWM power - 45 dBm between

1558 nm to 1565 nm is observed, agreeing well with

theoretical predictions, with generated sidebands are as

predicted. The non-linear coefficient of ZEr-B is

measured to be 14 W-1

km-1

, with chromatic and slope

dispersion values of 28.45 ps/nm.km and 3.63

ps/nm2.km respectively. The ZEr-B is also used together

with a graphene based saturable absorber to take

advantage of the high erbium concentrations in create a

compact, passively Q-switched fiber laser. Short pulses

with a pulse width of 8.8 µs and repetition rate of 9.15

kHz are generated at a pump power of 121.8 mW, with a

maximum average output power of 161.35 µW and

maximum pulse energy value of 17.64 nJ. The fabricated

Zr-EDF has many potential applications in multi-

wavelength generation as well as in the development of

compact, pulsed laser sources.

Oral 2-1A-6

Invited Speaker

Graphene and Nanotube Based

Ultrafast Lasers D. Popa, Z. Sun, T. Hasan, F. Torrisi, Z. Jiang,

F. Wang, A. C. Ferrari

Engineering Department, Cambridge

University

Ultrafast lasers have many applications, ranging from

basic research to industrial processing. Ultrashort pulse

generation is enabled by a nonlinear optical device, a

saturable absorber (SA). Graphene and nanotubes are

promising SAs. While for nanotubes the operation

wavelength is defined by the diameter, graphene has

inherent ultra-wide bandwidth, due to the linear

dispersions of the Dirac electrons. We present recent

advances in implementing graphene and nanotubes as

SAs for ultrafast, tunable, wide spectral coverage, high-

power and high-energy pulse generation. We present a

dispersion-managed fiber laser mode-locked by

graphene and nanotubes. We report pulse durations of

~174fs and ~74fs, the shortest to date for graphene- and

nanotube-based fiber lasers. Tunability is demonstrated

with an Erbium doped fiber laser mode-locked by

graphene and nanotubes. We present mode-locking at 1,

1.1, 1.5, 1.6 and 2m. 1.6W high-power is achieved,


PGC2012


from a nanotube-mode-locked fiber laser. By using a

single layer graphene, we mode-lock a 2m solid-state

laser with transform-limited 410fs pulses and 270mW

output power. We also demonstrate a graphene Q-

switched fibre laser tunable between 1522 and 1555nm,

with ~40nJ pulse energy. These results showcase the

potential of graphene and nanotubes as SAs for simple,

reliable and low-cost ultrafast lasers.

Oral 2-1B-1

Invited Speaker

Miniaturized optofluidic label-free

cytometry Xuantao Su, Yan Yang, Xuming Sun, Xu Qiao,

Kun Song, Beihua Kong

Shandong University Flow cytometry has wide applications in cell biology

and medicine. Compared with conventional fluorescence

labeling, light scattering can be adopted as a label-free

cytometric method. Integration of optics with

microfluidics, the optofluidic technology may help for

the advancement of the next generation miniaturized

label-free cytometry. Optofluidic label-free cytometry

that can obtain two dimensional light scattering patterns

from single cells has been developed. Laser light is

fibered-coupled onto a microfluidic chip, and light

scattering patterns can be obtained via a CMOS detector.

Light scattering from cells or particles in such a

cytometric setup can be simulated via the Mie theory or

finite-difference time-domain (FDTD) method. The

experimental results agree well with the simulated ones

for yeast cells. Further development of the optofluidic

label-free cytometric technique may help for early

cancer screening, and provide portable instruments for

clinics and home care.

Oral 2-1B-2

Plasmonic Nanohole Array for Biosensor

Applications Sweeyin Lim, Agampodi Promoda Perera, Yong Zhang, Mi

Kyoung Park

Institute of Microelectronics A*STAR

We present the optical biosensing platform based on

Fano resonances in plasmonic nanoholes array. The

periodic nanohole structure produce extraordinary light

transmission (EOT) resonances of which the resonance

spectrum peak () shifts proportionately to the change of

environment refractive index (RI). Detailed simulations

studies were carried out to establish the resonance

spectrum in relationship. Further simulation studies were

carried out to investigate the spectrum peaks and

sensitivity of both square and rhombic lattice

arrangement of the nanoholes array. The plasmonic

sensors were fabricated and tested with a direct coupling

method of incident light which allows robust and

sensitive sensing platform with minimal alignment

requirements. The position of resonance spectrum peak

can be designed and fabricated by tuning the pitch,

nanohole radius and the gold thickness. The measured

bulk refractive index sensitivity (BRIS) of the plasmonic

sensor is 659.32 nm/RIU and the mass sensitivity of the

sensor is 2.09 nm/ngmm-2.

Oral 2-1B-3

Multiple optical tweezers generated by Fresnel

zone plate arrays Yunfeng Jiang, Kaikai Huang, Xuanhui Lu

Institute of Optics, Department of Physics, Zhejiang University,

Hangzhou

We report a new method to generate multiple optical

traps by using Fresnel zone plate array (FZPA) which is

formed by a spatial light modulation and demonstrate its

applications on manipulating micro particles in

experiment. The multiple beams generated by FZPA are

directed into the inverted microscope and are highly

focused in the focus plane of the objective. Each of the

trapped particles can be controlled by changing the

position of the corresponding Fresnel zone plate array.

Comparing with the hologram methods, the FZPA

method has more advantages such as higher the trapping

efficiency. Because the power of the useless zero-order

light in the hologram method can be used in FZPA

method. Besides, each of the trapped particles can be

controlled separately in FZP method, which makes

micromanipulation more conveniently. It is useful in the

fields of micromanipulation and cell sorting.

Oral 2-1B-4

Invited Speaker

Single-molecule tracking

microscopy: Unraveling the spatio-

temporal dynamics of individual

proteins in living cells Davide Normanno

Ecole normale supérieure Cell functions are orchestrated by timely controlled

actions of different proteins at specific sub-cellular

locations. One of the ultimate goals of optical

microscopy is the observation and the study of protein

behavior at high spatial and temporal resolution in living

cells. Single-molecule tracking microscopy has emerged

as a powerful technique to directly quantify the

dynamics of individual proteins, either on the cell

membrane or in the cell interior. Tracking of individual

proteins in full 3D volumes has also been recently

achieved. The wealth of information coming from the

combination of single-molecule microscopy, advanced

analytical methods, and single-cell micro-manipulation

experiments now permits to decipher complex biological

processes in living cells. I will present results on two

illustrative examples: the dynamical re-organization of

individual adhesion nano-clusters on the plasma

membrane of lymphocytes and the target search of

DNA-binding proteins in mammalian cells.


PGC2012


Oral 2-1C-1

Invited Speaker

Super-Resolution Near-Field

Imaging and Sensing by Plasmonic

Nanoparticles on AgOx Thin Film Din Ping Tsai

Research Center for Applied Sciences,

Academia Sinica, Taipei 115, Taiwan In this talk we will report the results for various

applications of silver oxide thin film (AgOx) on

molecule near-field sensing and super-resolution

imaging. Ag nanoparticles (NPs) can be photo-reduced

in situ on the sputtered AgOx thin film under focused

light illumination [1]. These photo-generated Ag

nanoparticles are very useful for the plasmonic

applications especially the sensing and imaging because

of their localized surface plasmon resonances (LSPR).

For the super-resolution near-field imaging, the LSPR

launched at photo-generated Ag NPs in the AgOx thin

film can be used act as the scattering centres for

activating the near-field optical imaging process.

Therefore, Ag nanoparticles can enhance the optical

signals and functions as a near-field probe for reading

out the morphology of sample [2]. Using this scheme,

resolving the 100-nm-dimeter polystyrene nanospheres

can be achieved by putting them on the AgOx thin film

mounted on the confocal microscope. On the other hand,

under light illumination, the strong localized

electromagnetic fields (called plasmonic hotspots) of Ag

NPs can be can be used for near-field molecule imaging

and surface-enhanced Raman scattering. The results in

this talk show great promise of the AgOx thin film for

various novel applications such as bio- and molecular

sensor and imaging with low costing, efficiency.

Oral 2-1C-2

Photonic Band-Gap Optical Filters Using

Different Air-Bridge Structures Farzin Emami, Amir Mehr, Farzad Mohajeri

Shiraz University of Technology

Finite element analysis of photonic band-gap

materials with a cavity at the center is applied to two

types of structures; circular and square shape rods. Any

variation in the structure parameters, such as defect

length and hole dimensions, can change the transmission

peak and frequency bandwidth of these structures. It is

found that, for longer cavity lengths, there is a higher

transmission peak whereas for short cavity lengths, the

structure bandwidth decreases. For larger size of the rods,

there is decrement in the transmission peak. Photonic

band-gap materials with square shape rods have filtering

operation with smaller bandwidth. Indeed, a comparison

between these structures shows that in the lower peak

wavelengths the circular rods have less bandwidth

whereas this will occurs in higher peak wavelengths for

square rods.

Oral 2-1C-3

Photonic Chiral Structures with Defects Jagadeesh Syamprasad, Jolly Xavier, Joby Joseph


There are numerous methods for the fabrication of

photonic lattice structures, which are employed by

various research groups. Photonic crystal gets formed by

the spatial periodic variation of dielectric constant in

certain materials.

In this work, we present the photonic chiral

structures which we fabricated by the two-step approach

of combining the reconfigurable optical phase

engineering and DLW methods to fabricate photonic

chiral structures with defects. An extensive simulated

study has also been carried out on electromagnetic wave

propagation in photonic chiral structures with point and

line defects, to substantiate the experimental studies

made.

Oral 2-1C-4

Slow Light Based Waveguides with Nanopillar

Cavities for Photonic Switching Applications Nagesh Janrao, Vijay Janyani

Malaviya National Institute of Technology, Jaipur, India

Optical switching is one of the important functions

required for optical signal processing, optical networks

and modern telecommunications for long distances. Out

of the many switching mechanisms available, the

directional coupler technique is widely used. The use of

slow light using photonic crystals proposed in this paper

can further enhance the utility of directional coupler type

switching. Directional coupler optical switching is based

on the dielectric waveguide. If slow light waveguide are

used the size of directional coupler can be reduced up to

5µm. This is smallest optical switch used in optical

communications and networks. In this paper we propose

slow light generation method using photonic crystals

waveguide which has direct application in directional

coupler type switching.

Oral 2-1C-5

Transformation Optics Applied to Plasmonics:

From Nanocrescents to Nanowire Dimers Dang Yuan Lei

The Hong Kong Polytechnic University

We describe a systematic methodology based on

conformal transformation optics to analytically design

and study plasmonic singular devices, which are capable

of harvesting light over a broadband spectrum and

converting the far-field energy into enhanced near-field

at structure singularities. Numerical simulations are

performed by means of finite element method to verify

the validity of quasi-static approximation assumed by

the theory and predict the radiation losses effect on the

light-harvesting effectiveness and superfocusing of near

field energy.

Oral 2-1C-6

Design of sharp bends with transformation

plasmonics Yueke Wang


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We report a design method of surface plasmon

polaritons (SPPs) sharp bends for the metal–dielectric

interface based on transformation optics. The metal–

dielectric waveguide bends with different angles, which

possess little radiation loss, are proposed.

Transformation media can be simply achieved with

homogeneous and nonmagnetic materials, which can be

constructed by altering two different dielectric films.

The main attractiveness of our method is it enables us to

bend SPPs through curved interfaces while preserving

the mode pattern. Electromagnetic simulations by a

finite-element method on detailed examples have been

performed to validate the designs.

Oral 2-1C-7

Real-time determination of metal concentrations

in liquid flows using micro-plasma emission

spectroscopy Kalle Blomberg Von Der Geest, Jari Hyvonen, Toni Laurila

University of Oulu

We present a compact and robust analyzer

employing micro-plasma emission spectroscopy for real-

time determination of metal concentrations in flowing

water samples. The analyzer has been characterized by

measuring Na, Mn and Ag at mg/L concentrations. The

intensity fluctuations of the emission signals have been

significantly reduced by applying the Boltzmann plot

method to account for variations in the excitation

temperature and the number of emitting particles.

Oral 2-1D-1

Invited Speaker

Photonic crystal fiber-based

interferometry for sensing

applications Dora Juan Juan Hu

Massachusetts General Hospital/Harvard

Medical School Fiber-based interferometry has been widely used in

material characterization and measurement of physical

magnitudes in many fields of science and technology.

Refractive index sensing is showing great promise in

biological and chemical applications. In this talk,

photonic crystal fiber based interferometers for

refractive index sensing and biosensing applications are

presented.

Oral 2-1D-2

Invited Speaker

Microfiber Structures and its

Sensor and Laser Applications Sulaiman Wadiharun Harun

University of Malaya Fabrication of various microfiber structures such as

loop, knot, mach-zenhder interferometer and coil

resonators have been successfully demonstrated using a

flame brushing technique. A compact inline microfiber

Mach-Zehnder interferometer (MMZI) is also

demonstrated for high temperature sensing. The

temperature sensitivity of the device was measured to be

13.4 pm/°C with an excellent linearity for temperature

measurement up to 800 °C. Another MMZI structure is

also proposed for application in tunable Erbium-doped

fiber laser (EDFL). The operating wavelength of the

laser can be tuned from 1530.2 nm to 1532.7 nm by

changing the path length difference inside the MMZI

from 1.6 mm to 2.7 mm at room temperature.

Oral 2-1D-3

Temperature-independent strain sensor based

on simplified hollow-core photonic crystal fibers Zhifang Wu, Yange Liu, Zhi Wang, Tingting Han, Perry Ping

Shum

Key Laboratory of Optical Information and Technology,

Ministry of Education and Institute of Modern Optics, Nankai

University, China

In this paper, we experimentally demonstrate a

Mach-Zehnder interferometer (MZI) based on an

intermodal interference in the simplified hollow core

photonic crystal fiber (HCPCF) by simply splicing the

HCPCF to standard single mode fibers with an

appropriate core-offset. Thanks to the special structure

of the simplified HCPCF and air-guided property, the

MZI shows almost insensitive to temperature, as low as

0±0.5 pm/°C, but relatively high sensitivity to axial

strain (-2.29 pm/µε). This device has a promising

application as a temperature-independent strain sensor.

Oral 2-1D-4

A high sensitivity temperature sensor based on a

selectively Filled Photonic Crystal Fiber Sagnac

Interferometer Tingting Han, Yange Liu, Zhi Wang, Zhifang Wu

Key laboratory of Optical Information Science and Technology,

Ministry of Education, Institute of Modern Optics, Naikai

University, China

A high sensitivity temperature sensor based on a

Sagnac interferometer consisting of a segment of

selectively liquid-filled photonic crystal fiber (SLF-PCF)

is proposed and demonstrated. The SLF-PCF is achieved

by the high frequency CO2 laser and possesses unique

birefringence feature. Numerical and experimental

results are presented, and a high sensitivity temperature

sensor with sensitivity of ~-11.6 nm/°C is achieved from

65°C to 85°C.

Oral 2-1D-5

Assembly Photonic Crystal Arrays on the Facet

of Optical Fibers and its Applications Haibin Ni, Ming Wang, Ting-Ting Wang, Wei Chen

Nanjing Normal University

We propose a route to fabricate practically used

photonic crystals (PCs) based optical fiber detectors and

demonstrate its application in refractive index sensing.

One end of an optical fiber was fixed inside an 8mm

long quartz capillary sleeve which inner and outer


PGC2012


diameters are ~128µm and 1.8mm. Both end faces of

fiber and capillary are in a same plane vertical to the

fiber axis. Self-assembly three dimensional PCs (opals

and inverse opals) on the fiber-capillary end face to form

a layer of ~5µm thick film. This fiber-PCs structure can

be used as a sensing detector. We experimentally test the

characters of this structure as a liquid refractive index

detector, and it can also be a humidity sensor. By

selecting PCs with its band gap located in

communication bands as to reduce transmission loss,

this structure can be used in long distance all optical

sensing network.

Oral 2-1E-1

Invited Speaker

Recent Advances in Meta-Optics Nader Engheta

University of Pennsylvania

Metamaterials and Plasmonic optics provide

mechanisms for controlling and harnessing light and

electrons in unprecedented ways. As the field of

metamaterial reaches a certain level of development,

new directions and novel vistas will appear in the

horizon. Modularization and parameterization of

metamaterials may be exploited to provide new

functionalities and possibilities stemming from such

interesting platforms, which may include nonlinearity,

anisotropy, chirality, non-reciprocity, and non-locality.

This new paradigm of ―Meta-Optics‖• offers new and

transformative grounds for innovation in the field of

optics. I will give an overview of some of our most

recent results in this area.

Oral 2-1E-2

Invited Speaker

Metamaterial Electromagnetic

Wave Absorbers: Applications from

Imaging to Energy Harvesting Willie Padilla

Boston College, USA

Oral 2-1F-1

Invited Speaker

Silica-based fibers for the mid-IR Jonathan Knight, Fei Yu

University of Bath

The attenuation of silica rises rapidly as one moves

beyond 2 microns and especially beyond 3 microns

wavelength, reaching 60dB/m by 3 microns and

exceeding 500dB/m beyond 3.7 microns wavelength.

This would suggest that if one wished to develop fibers

for this spectral range, an alternative material should be

used. In this paper we demonstrate how silica can

nonetheless form low-loss (<50dB/km) and effectively

single-mode hollow-core fibers for wavelengths beyond

3microns. For the spectral range 3-3.5 microns the fibres

have attenuation characteristics which are competitive

with the best alternative solutions, greatly improved

power handling, and offer the advantages of silica as a

chemically inert, bio-compatible and robust material.

Oral 2-1F-2

Invited Speaker

Next steps in the fabrication of

Chalcogenide glass optical fiber and

related photonic devices Dan Hewak

University of Southampton Chalcogenide glass optical fibers have been

extensively studied since 1967, when sulphide based

fibers and their potential applications were first proposed.

While good quality fiber drawn from alloys containing a

variety of chalcogen elements have been realized, their

delicate nature, complicated fabrication methodology

and expense has restricted widespread application and

commercial acceptance. In this paper we describe our

current work on the fabrication and application of

chalcogenide fiber and our vision for their practical

implementation in the future. We focus on new methods

for the synthesis of chalcogenide glass, in particular,

chemical vapour deposition, which is now showing

potential for the synthesis of some of the high purity

chalcogenides made to date. Optical fibers represent

only one important use of chalcogenide materials and in

this talk we also described related research in the

application of chalcogenides in thin film devices and

metamaterials.

Oral 2-1F-3

Invited Speaker

Pushing the limits in soft glass

properties and microstructured

fibre fabrication Heike Ebendorff-Heidepriem

The University of Adelaide, Institute for

Photonics & Advanced Sensing Soft glass optical fibers have demonstrated growing

interest in recent years for nonlinear processing, mid-

infrared lasing and sensing applications due to their

extended properties relative to silica-based glasses. Soft

glasses have also been exploited to embed nanocrystals

in glass. Furthermore, soft glasses enable use of the

extrusion technique to create an almost unlimited

variation of fiber structures. This paper will review the

recent progress achieved in the development of glasses

with advanced properties such as significantly reduced

transmission loss of tellurite and germanate glass in the

mid-infrared, extended mid-infrared transmission range

for fluoride glass, single photon emission in diamond-

tellurite glass and optically stimulated luminescence in

fluoride-phosphate glass. In addition, the paper will

report on the fabrication of optical fibers from these

advanced glasses as well as of fibers with extreme

structures such as nanoscale core size and exposed core

fibers.


PGC2012


Oral 2-1F-4

Invited Speaker

Recent advances in non-linear

optics in gas-filled Kagome-fiber Nicolas Joly, John Travers, Kafai Mak,

Francesco Tani, Wonkeun Chang, Gordon

Wong, Philipp Hölzer, Mohiudeen Azhar,

Philip Russell

Max-Planck Institute for the Science of Light Hollow-core photonic crystal fibers (PCF) consist of

a periodic arrangement of air-channels surrounding an

empty-central defect where the light is guided. By

contrast with the bandgap fiber, Kagomé-lattice (PCF)

can guide over a few hundreds nm. Moreover it exhibits

a very weak anomalous dispersion over the whole

transmission window, which can be easily balanced by

an appropriate pressure of gas. Filled with noble gas and

pumped with fs-pulse from a Ti:Sa laser (800 nm), such

system offers unique features to perform nonlinear

optics in absence of Raman-scattering. In particular self-

compression with emission of dispersive wave allows

the generation of tunable band from UV (200 nm) up to

visible (600 nm) [1]. Efficiency up to ~10% was

demonstrated. At much higher pressure, nonlinearity can

even approach that of a solid material. Here we will

present recent results on this source.

[1] J.C. Travers et al., JOSA B (28) p. A11-A26

(2011)

Oral 2-1G-1

Invited Speaker

Recent Progress in Ultrafast Optical

Signal Processing Jian Wang

Huazhong University of Science and

Technology The rapid development of photonics technologies in

optical communications has driven increased interests

for optical signal processing. Optical nonlinearities are

potentially well-suited to perform ultrafast optical signal

processing at high speed with low noise. We will review

our recent progress in ultrafast optical signal processing

by exploiting various second-order nonlinearities and

their cascading in periodically poled lithium niobate

(PPLN) waveguides, degenerate and non-degenerate

four-wave mixing (FWM) in highly nonlinear fibers

(HNLFs) and silicon waveguides. Miscellaneous optical

signal processing applications are reported: 1)

modulation-format-transparent wavelength conversions;

2) single-device-enabled multi-functional logic gates; 3)

flexible format conversions between different

modulation formats; 4) ultrawideband (UWB) signal

generation; 5) demultiplexing of high-speed optical

time-division multiplexed (OTDM) signal; 6) robust

data exchange in different degrees of freedom

(wavelength, time, polarization), for different

modulation formats (on-off keying (OOK), differential

phase-shift keying (DPSK), differential quadrature

phase-shift keying (DQPSK)), and at different

granularities (entire data, groups of bits, tributary).

Oral 2-1G-2

Invited Speaker

Ultrafast optical signal processing

assisted by chirp dynamics in

semiconductor optical amplifiers Yong Liu

University of Electronic Science and

Technology of China Semiconductor optical amplifiers (SOAs) have been

broadly used as nonlinear elements for all-optical signal

processing, where the nonlinearities in the SOAs have

been utilized. To overcome the limitation of slow gain

recovery in the SOA, blue-detuned optical filtering

technology has been employed to extract ultrafast chirp

component to realize 160 Gbit/s and 320 Gbit/s optical

wavelength conversion. We investigate the chirp

properties of the SOA in all-optical switches under the

injection of consecutive random optical pump pulses,

and analyze the influences of chirp dynamics upon the

blue-detuned filtering scheme. The reason of the

overshoots in eye diagrams in the blue-detuned filtering

scheme is explained. We find that the overshoots result

from the blue-shift chirp induced by carrier heating and

two-phonon absorption in the SOA. The results are very

useful for SOA-based ultrafast optical signal processing

in photonic networks.

Oral 2-1G-3

Mitigation of Nonlinearity based on Optimized

Percentage of Dispersion Pre-compensation in

Coherent Optical PDM-OFDM Systems Shengjiao Cao, Changyuan Yu, Pooi-Yuen Kam

National University of Singapore

The one-step nonlinearity compensation method, i.e.,

nonlinear phase rotation (NPR), is shown to be affected

by the amount of pre-compensated dispersion for

coherent optical OFDM system with a dispersion

unmanaged link. It is observed that NPR plus optimal

percentage, around 50%, of dispersion pre-compensation

is performing better than 1-step digital back-propagation

(BP), with the same computational complexity. The

optimized scheme results in a 2-dBm improvement in

optimal launch power as well as 1.75-dB improvement

in optimal signal quality compared to 1-step BP after

800-km transmission at the bit rate of 20 Gb/s.

Oral 2-1G-4

Design and Analysis of Diversity Optical CDMA Wing Kwong

Hofstra university

In this paper, a "diversity" on-off-keying (OOK)

optical code-division multiple-access (O-CDMA)

scheme is proposed and analyzed. The scheme transmits

multiple copies of an optical code per data bit of one in

order to improve code performance. Our results show

that the diversity OOK O-CDMA scheme reduces error

probability with little degradation on spectral efficiency,

under the assumptions of similar code power and

bandwidth expansion as the conventional OOK O-


PGC2012


CDMA scheme. An important application of our

diversity scheme, which solves the low code-cardinality

problem of heavy-weight optical codes, is finally

discussed.

Oral 2-1G-5

Optimization of an Optical Array Receiver for

Deep-Space Optical Communication during

Earth-Mars Conjunction Phase Ali Hashmi, Ali Eftekhar, Ali Adibi, Farid Amoozegar

National University of Sciences and Technology

In this article, channel modeling, optimization of an

optical receiver, and link analysis of a deep-space optical

communication channel between a space-craft in MSO

(Mars stationary orbit) and an optical receiver deployed

on Earth are presented. The simulation results show that

optimization of link parameters is essential to maximize

the performance of an already power-starved deep-space

communication link. The calculations of achievable data

rates show that optical communication can provide an

order of magnitude greater bandwidth compared to the

current RF technology. This paper presents the

analytical results during Earth-Mars conjunction phase,

which represents the worst-case channel conditions for

an optical communication channel between planet Earth

and Mars.

Oral 2-1H-1

Invited Speaker

Microwave stabilization and

modulation of quantum cascade

lasers Carlo Sirtori

University Paris-Diderot

Recently we have been investigating the possibility

of controlling phase and frequency of quantum cascade

(QC) lasers using microwave technologies. The purpose

of this project is to speed up the exploitation of these

devices by applying concepts and techniques that are

imported from microwave photonics. This will spark

new ideas for system applications and motivate physical

investigations of carrier dynamics of QC lasers, which

have the potential for extremely wide modulation band,

of several tens of GHz. We will illustrate a technique

that allows the phase-locking of QC lasers to a harmonic

of the repetition rate of a fs-fiber laser. We will also

show that the QC lasers beat note, arising from the

beating of the longitudinal modes, can be locked to an

injected microwave with a modulation frequency

sufficiently close to that of the laser roundtrip. In this

case the QC laser enters in a regime of active mode-

locking.

Oral 2-1H-2

Invited Speaker

Quantum well infrared

photodetectors operated at and near

room temperature Hui Chun Liu

Shanghai Jiao Tong University

Semiconductor quantum structures have not only

enabled discoveries of new phenomena but also

realizations of novel photonic devices. In this talk I will

discuss successful examples and more importantly the

applications that they have enabled. The first one is the,

by now, well-established quantum-well infrared

photodetector (QWIP). High performance QWIP

imagers are sold and used in various systems. On the

other hand, single-element QWIPs have not attracted

much interest. With the development of high

performance quantum cascade lasers (QCLs), the

situation is different. Here I will first outline the current

status of QWIPs, and then discuss QWIPs being used in

laboratories for high-speed/high-frequency infrared

detection involving QCLs. I will then present analyses of

required parameters and characteristics of QWIPs used

at room and near room temperatures. I will continue

with discussions of potential applications of QWIP-QCL

pair for environmental/industrial sensing in the infrared

spectrum.

Oral 2-1H-3

Invited Speaker

Approaches towards room

temperature THz lasers Greg Sun

UMass Boston The THz region of the spectrum has many promising

opportunities and applications, however, the

development of THz technology has been hindered by

the availability of efficient THz sources that operate at

room temperature. While advances of quantum cascade

lasers utilizing intersubband transitions have penetrated

deep into the THz region, the THz DCLs based on GaAs

and its related alloy material system have so far been

operating only up to around 200 K. A major obstacle for

achieving higher temperature operation is attributed to

its inherent material property - optical phonon energy in

GaAs (~36meV) is only slightly higher than the room

temperature thermal energy (26meV). It is desirable to

explore alternative material systems. It has been

proposed that GaN-based and group-IV SiGeSn systems

can potentially lead to room temperature THz QCLs.

Feasibility study and QCL designs based on these two

material systems will be presented.

Oral 2-1H-4

Microscopic analysis on optical gain of terahertz

quantum cascade lasers: many-body and non-

parabolicity effects Tao Liu, Qijie Wang



PGC2012


The effects of many-body coulomb interaction and

non-parabolicity on optical gain of terahertz quantum

cascade lasers are investigated based on the density-

matrix model. The results show that many-body

interaction and non-parabolicity effect all red-shift the

gain spectrum and reduces the peak value. Furthermore,

the interplay of various many-body effects that reveals

the optical spectral redshift and reduction are mainly

caused by the depolarization terms due to the

cancellation of the exchange self-energy term and the

excitonic enhancement term in THz QCLs. The

proposed model provides a comprehensive picture of

optical properties of THz QCLs, not only enhancing our

in-depth understanding of optical gain, but also enabling

an accurate prediction of the device performance.

Oral 2-1H-5

Quantum Cascade Lasers of λ≈14 µm Based on

Three-phonon-resonance Design Bo Meng, Qijie Wang


We report the design and demonstration of ~14 µm

quantum cascade lasers based on the three-phonon-

resonance active region design. The as-cleaved device

with 40 periods of active region and size of 3.8

mm×28µm shows ~10 mW peak power at 280 K and

maximum working temperature of 295 K. Due to the

Stark effect, the laser wavelength blue-shifts from 13.75

to 13.4 µm for temperature changing from 200 K to 295

K at around roll-over current density, with quasi-single

mode operation in most of the measured temperature

range and characteristics temperature of 440 K.

Oral 2-2A-1

Invited Speaker

Optical polarization and anisotropic

gain characteristics in semipolar

and nonpolar InGaN quantum well

lasers Atsushi A. Yamaguchi

Kanazawa Institute of Technology Utilization of nonpolar and semipolar substrates has

been considered as a promising technique to realize

high-performance green InGaN optical devices. In these

devices, optical polarization properties are important for

the device characteristics. In this work, by using a new

theoretical approach, the previously-reported

experimental results of the polarization properties in

non-c-oriented InGaN QWs were analyzed. On the basis

of the kp-perturbation theory, we derived a useful

analytical expression for describing the polarization

properties, and used this expression to analyze

experimental data reported from various research groups.

All the data are successfully fitted by the analytical

expression, and realistic prediction of polarization

properties is possible for unexplored substrate

orientation and In composition. Based on these analyses,

we predict that optical gain characteristics favorable for

laser diodes with cleaved-facet cavity mirrors would

appear in the green-InGaN QWs on the lower-angle

semipolar planes.

Oral 2-2A-2

Invited Speaker

Controllable Modulation of

Optoelectronic Properties Based on

Phosphine Oxide Semiconductors Hui Xu

Heilongjiang University

Rapid development of organic semiconductors for

optoelectronic applications requires both excellent

optical and electrical performances. However, the

correlations between the different photoelectronic

properties often induce the improvement of one property

accompanied with the sacrifice of other properties.

Actually, the contradictory between optical and

electrical properties, which originates from the

correlations between these properties and frontier

molecular energy levels, is a formidable problem for

many organic optoelectronic applications. In this case,

the controllable modulation of molecular characteristics

is still a big challenge. Recently, our group focused on

selective tuning optoelectronic properties on the basis of

phosphine oxide compounds. We found that through

well managing molecular configurations and linkage

styles between functional groups, the independent

modulation of electrical properties and photophysical

properties can be realized. As the results, we developed

a series of high energy-gap hosts with balanced carrier

injecting/transporting ability for low-voltage driving and

highly efficient blue and white electrophosphorescence.

Oral 2-2A-3

Influence of Cathode Module Technology on

Photoemission of Transmission-mode GaAs

Photocathode Materials Jing Zhao, Wenting Qu, Benkang Chang

Nanjing University of Science and Technology

In order to research the influence of cathode module

technology on photoemission of transmission-mode

GaAs photocathode materials, high resolution X-ray

diffraction (HRXRD) instrument was adopted to

measure the HRXRD curves of transmission-mode

GaAs materials and modules respectively. By

comparison of the structures of reflection-mode and

transmission-mode GaAs epilayers, both the cathode

materials with the same uniform-doping or exponential-

doping active layers were grown by molecular beam

epitaxy. After the high-low temperature activation, the

reflection-mode photocathodes were tested directly by

on-line spectral response measurement system, while the

transmission-mode photocathodes were maken into

cathode modules for testing performance. The

comparison results indicate that the electron diffusion

length decreases by 10% approximately in the case of

uniform doping after cathode module technology, while

it decreases by 5% for exponential doping. It shows that

the active layer with exponential doping can affect


PGC2012


smaller on GaAs photocathode materials during cathode

module technology.

Oral 2-2A-4

The substrate cooling effect of ion beam post

treatment on ZAO films properties Wenna Wang, Dawei Zhang, Qi Wang, Chuanxian Tao,

Zhengji Ni, Songlin Zhuang, Ting Mei, Daohua Zhang

Shanghai Key Lab of Modern Optical System, University of

Shanghai for Science and Technology, China

ZAO thin films with low surface roughness and low

sheet resistance are required in the touch panels and

display panels. In this work, we investigated the

substrate cooling effect of ion beam post treatment on

ZAO films properties, and one new way of obtain low

surface roughness and low sheet resistance same time

was proposed. The more exciting find of this paper is

that, comparing to the samples without cooling during

the process of ion beam post treatment, samples with

proper cooling voltage show a sheet resistance decrease

to 8.8 ) and a roughness

decrease of 35.5% (from13.389 nm to 8.637 nm) without

transparency losing. And the viewpoint that substrate

cooling has the effect of weakening the crystallization,

especially for the sub-face and internal parts of samples

is deduced.

Oral 2-2A-5

Inductively coupled plasma etching of c- and a-

plane AlxGa1-xN over the entire Al composition

range Amit Shah, Masihhur Laskar, Azizur Rahman, Mahesh

Gokhale, Arnab Bhattacharya

Tata Institute of Fundamental Research

Inductively-coupled-plasma (ICP) reactive-ion

etching (RIE) patterning is a standard processing step for

UV and optical photonic devices based on III-nitrides

materials. There is little research on ICP-RIE of high Al-

content AlGaN alloys and for non-polar nitride

orientations. We present a comprehensive study of the

ICP-RIE of c- and a-plane AlGaN in Cl2/Ar plasma over

the entire Al composition range. We study the effect of

BCl3 deoxidizing plasma pretreatment step. We find that

the etch rate decreases in general with increasing Al

content, with different behavior for c- and a-plane

AlGaN. An ICP deoxidizing BCl3 plasma along with Ar

sputtering is more efficient in removal of surface oxides

from AlxGa1-xN than RIE alone. Our experiments show

that AlxGa1-xN etching is affected by higher binding

energy of AlN and higher affinity of oxygen to

aluminum compared to gallium, and are of practical

importance for the processing of AlGaN-based photonic

devices.

Oral 2-2A-6

Influence of Electric Field Penetration on

Uniformly Doping GaAs Photocathode

Photoelectric Emission Properties Ling Ren

Nanjing University of Science and Technology

In order to explore the changes of photoelectric

emission properties of GaAs material employed in the

third generation low light level (LLL) image intensifiers,

the influence of electric field penetration on

photoelectric emission properties of uniformly doping

GaAs photocathode is studied. Based on the

establishment of electric field penetration model for

uniformly doping GaAs photocathode, the photoelectric

trajectories in GaAs photocathode have been calculated

in different penetration voltages. The results show that

electric field penetration is helpful for enhancing the

movement of photoelectrons excitated by the long-wave

radiation toward the band bending region (BBR). With

increase of electric field penetration, the diffuse circle of

photoelectrons reaching the BBR has no obvious

difference, and the resolution of GaAs photocathode is

improved. The fitted curves of the location distribution

of photoelectrons can be expressed by Gaussian formula.

The research will be beneficial to promote the

development of the LLL night vision technology.

Oral 2-2B-1

Invited Speaker

Photobiology and Photochemistry of

Photoactive Yellow Protein Masato Kumauchi

Department of Microbiology & Molecular

Genetics Oklahoma State University Photoactive yellow protein (PYP) is a bacterial

photoreceptor protein, which is water-soluble, consisting

of 125 amino acid residues. For the photoreception, PYP

has a 4-hydroxycinnamyl group covalently bound to

Cys69 via a thiolester. The phenolic hydroxyl group of

the chromophore in PYP in the initial state is

unprotonated, causing an enormous red-shift of the

absorption maximum to 446 nm, and the configuration

of the olefinic bond is trans. A photocycle of PYP is

triggered by photoisomerization of the chromophore,

which initiates subsequent conversions to

spectroscopically-distinguishable intermediates before

returning to the initial state (<1sec). PYP has been

extensively studied by using biophysical, biochemical

and molecular genetics methods. I would like to talk

about PYP as a photoreceptor and a potential application

of PYP for life science, engineering field as a

fluorescent protein tag.

Oral 2-2B-2

Invited Speaker

Direct imaging of singlet oxygen

luminescence during

photosensitization Buhong Li

Fujian Normal University

Singlet oxygen (1O2) is a highly oxidative reactive

oxygen species (ROS) that plays an important role in

numerous chemical and photochemical reactions in

different biological systems and in particular, in


PGC2012


photodynamic therapy (PDT). In this study, a spatially-

resolved imaging system using a cooled InGaAs NIR

camera was developed for imaging the 1O2 luminescence

around 1270 nm during photosensitization. After the

intravenous administration of the photosensitizer

HMME, the 1O2 luminescence image of blood vessels

via a dorsal skinfold window chamber model created in

the mice was successfully acquired with a resolution of

30 µm and with a maximal imaging area of 9.6

mm×7.68 mm. Furthermore, the influence of

photosensitizer dose on the 1O2 luminescence image was

quantitatively evaluated. This study implies that the

developed imaging system could be useful for the

mechanistic investigation of 1O2 for vascular targeting

PDT.

Oral 2-2B-3

Application of Plasmonic Nanomaterials for

Biosensing and Bioimaging

Wing-Cheung Law

Institute for Lasers, Photonics and Biophotonics

University at Buffalo, NY

Nanostructure materials have drawn extensive

attention for two decades. One of the important reasons

is their unique properties that are different from their

behaviors in bulk form. Since their sizes are confined in

a very tiny space, even much smaller than the

wavelength of light, their properties (optical, magnetic,

electronic and plasmonic) are highly dependent on the

materials, shapes, sizes, and surrounding environments.

Due to these phenomena, nanostructure materials (or

nanoparticles) can be utilized in multidisciplinary

applications such as biosensing, bioimaging, energy

harvesting, environmental monitoring and security. This

presentation will focus on the biological applications. In

order to apply nanoparticles in biological samples, those

particles should be reliable, bio-compatible, non-toxic

and robust. Most recently, plasmonic nanomaterials have

drawn a great deal of attention when this behavior was

also found in the semiconductor nanocrystals. Herein,

the use of metallic and semiconductor plasmonic

nanoparticles for biosensing and bioimaging applications

will be presented.

Oral 2-2C-1

Invited Speaker

Magnetic response of dielectric

nanostructures: theory and

applications Andrey Miroshnichenko

The Australian National Universtiy Dielectric nanostructures makes a new twist on light

scattering phenomena. Subwavelength particles made of

high-dielectric materials exhibit very strong magentic

response in visible range, which has been recently

demonstrated experimentally. The lower losses,

compared to plasmonic counterparts, allow to employ

dielectric nanostructures for a variety of applications

spanning from optical nanotantennas towards

metamaterials.

Oral 2-2C-2

Invited Speaker

Visible magnetic response and

antenna properties of silicon

nanoparticles Arseniy Kuznetsov, Yuan Hsing Fu, Andrey

Miroshnichenko, Yefeng Yu

Data Storage Institute It is experimentally demonstrated for the first time

that spherical silicon (Si) nanoparticles with sizes in the

range from 100 nm to 300 nm possess strong magnetic

dipole resonance, which can be continuously tuned

throughout the whole visible spectrum varying particle

size and visually observed by means of dark-field optical

microscopy. Silicon nanoparticles of this size have been

fabricated by laser ablation and laser-induced transfer

(LIT). LIT is a new laser method, which allows

fabrication of arbitrary nanoparticle structures and

controls the quality of fabricated particles by means of

strong surface tension forces. We also experimentally

show that silicon particles possessing both resonant

electric and magnetic dipole responses can act as

efficient nanoantennas directing visible light either in

forward or backward directions depending on the

wavelength and particle size. These optical systems open

up new perspectives for fabrication of low-loss optical

metamaterials and nanophotonic devices.

Oral 2-2C-3

Invited Speaker

Hybrid plasmonic nano-objects for

optical limiting effect Tsung Sheng Kao, Karthik Kumar

Shanmugavelayudam, Ming Hui Hong

Dept. of Electrical & Computer Engineering,


Optical limiting effect, a strong nonlinear optical

phenomenon in a material, keeps the output intensity of

a light beam at a constant level while the input optical

energy is beyond the nano-system‘s energy threshold.

Such a material can be used as a protective device to

limit the amount of optical power entering a system or

human eyes. However, such an effect has only been

accomplished at very high laser fluences so far. In this

paper, plasmonic nano-objects such as laser-synthesized

nanostructures are introduced, aiming to lower the

energy threshold in an optical limiting system.

Meanwhile, to cater for the broadband optical limiting

effect, hybrid nano-composites-based approaches will be

studied by combing different sizes of nano-objects into

liquid or polymer matrix. An extensive research by

coupling tiny transparent glass beads into the optical

limiting nano-systems will be synthesized and

investigated as well.

Oral 2-2C-4

Wavelength-dependent emission enhancement

through the design of active plasmonic

nanoantennas


PGC2012


MéLanie Ferrie, Nicola Pinna, Renaud Vallee, Serge

Ravaine

CRPP

We present a simple sol-gel route to produce dimers,

trimers, tetramers, of gold@silica core-shell particles

with fluorescent dyes encapsulated within the dielectric

shell. Both distances between i) the dye molecules and

the gold cores and ii) between the metallic cores are well

controlled within these clusters, allowing us to evidence

plasmon resonance couplings and to control the emission

rate and intensity of the fluorescent emitters. We show

that the shaping of the emission spectra of the multimers

is drastically enhanced by comparison with the

corresponding monomers.

Oral 2-2D-1

Invited Speaker

Highly-sensitive temperature

measurement with alcohol liquid-

filled microstructured optical fibers Xinyong Dong

China Jiliang University

Highly-sensitive temperature sensors are proposed

and experimentally demonstrated by using two kinds of

birefringent microstructured optical fibers with their air

holes being filled with alcohol liquid. The sensing fibers

are connected in fiber loops to form Sagnac

interferometers. Because refractive index of the alcohol

liquid is dependent on temperature, birefringence of the

filled fibers and thus interference pattern of the fiber-

based Sagnac interferometer changes with temperature.

High sensitivity of 6.6 nm/°C is achieved, which is more

than 600 times higher than that of an optical fiber Bragg

grating sensor.

Oral 2-2D-2

Invited Speaker

Multi-wavelength Fiber Laser with

Comb Filter Based on Inter-core

Interference in Photonic Crystal

Fiber Bongkyun Kim, Khuramm Naeem, Jihee Han,

Youngjoo Chung

Gwangju Institute of Science and Technology We will present experimental demonstrations of

fiber laser configurations for generating multi-

wavelength oscillations by utilizing inter-core

interference in photonic crystal fiber-based comb filter

as a wavelength-selective component. The proposed

multi-wavelength fiber lasers can be operated in

switching modes and provide wavelength tunability.

Oral 2-2D-3

Hybrid Photonic Crystal Fiber Selectively

Infiltrated with Liquid Crystal Karolina Milenko, Dora Juan Juan Hu, Perry Ping Shum,

Tomasz Wolinski

Faculty of Physics, Warsaw University of Technology,

POLAND

We present hybrid propagation in a photonic liquid

crystal fiber (PLCF) fabricated by selective infiltration

of photonic crystal fiber (PCF) air channels with a liquid

crystal (LC). Temperature tuning of photonic bandgaps

is demonstrated.

Oral 2-2D-4

A microfiber-based highly birefringent device Ye Chen, Jun-Long Kou, Fei Xu, Yan-Qing Lu

Nanjing university

A broadband microfiber-based device with high

birefringence is successfully realized by wrapping a

microfiber (MF) on a 2 mm-diameter rod which is

precoated with low-index polymer Teflon. The

birefringence of the device is as high as 10-3 over a

broad wavelength range. The results show that this kind

of device presents great potential in sensing and

communication applications.

Oral 2-2D-5

Whispering gallery resonator based on index

profiling Yanyan Zhou


Dielectric cavities of highly prolate shape support

confined whispering gallery modes (WGM) that travel

back and forth along the cavity length. We present and

explain a novel WG resonator that relies on index

profiling instead of shape differences to confine the

WGM. It is consisted of a cylindrical fiber with an index

profile distributed along the fiber length. Theoretical

derivations show that a parabolic index profile is able to

confine light within its two caustics and that the field

intensity is strongest at the caustics. The new cavity

structure bears advantages such as homogeneous shape

for robust positioning, better profiling accuracy for

phase-matched coupling (because index precision is

generally better controlled than geometrical shape), and

device integration into a nonlinear WGR for frequency

comb generation.

Oral 2-2E-1

Invited Speaker

Applications of complex plasmonics Harald Giessen

University of Stuttgart, Germany

Oral 2-2E-2

Invited Speaker

Nature Photonics and you Rachel Pei Chin Won

Nature Photonics, Japan

Launched in January 2007, Nature Photonics is a

monthly journal dedicated to optics and photonics that

publishes top-quality, peer-reviewed research in all areas


PGC2012


of light generation, manipulation and detection. This talk

will give an overview of the editorial scope and the peer

review process of the journal. Marching towards the

seventh year since its launch, the journal would also like

to discuss its publication policy with the photonics

community and to hear any comments the community

may have, be they suggestions or criticisms.

Oral 2-2F-1

Invited Speaker

Erbium-Doped Transparent Glass

Ceramic Optical Fibres:

Characterization using mass

spectroscopy and molecular

dynamics modeling ValéRie Mauroy, Wilfried Blanc, Christelle

Guillermier, Bernard Dussardier, MichèLe

Ude, Stanislaw TrzéSien

Université Nice-Sophia Antipolis, LPMC

CNRS UMR7336 Rare earth (RE) doped silica-based optical fibres

with transparent glass ceramic (TGC) core were

fabricated through the well-known modified chemical

vapor deposition (MCVD) process without going

through the commonly used stage of post-ceramming.

The main characteristics of the RE-doped dielectric

nanoparticles (DNP), their density and mean diameter in

the fibres are dictated by various parameters. This paper

reports on progresses in the fine characterization of the

nanopaticles, particularly their dimensions and

composition, using nanosclae mass spectroscpy and

molecular dynamics modeling, and alteration of the

spectroscopic properties of the erbium ions embedded

within the phospho-silicate DNP. These results permit to

get more insight into the complex process of the DNP

self-nucleation and growth during the fibre fabrication

process. This fabrication route could have important

potentials in improving rare-earth-doped fibre amplifiers

and laser sources.

Oral 2-2F-2

Invited Speaker

Modern Fabrication of Classical

Silica-based Fibers Masaaki Hirano

Sumitomo Electric Industries, ltd.

Silica-based optical fibers have come to be

indispensable infrastructure in information technology

age since deployment in the trunk line of optical

communication systems in the 1980s. Silica fibers have

been applied not only as transmission media, but also as

various kinds of optical functional devices. A reason

why silica fiber has been spread explosively all over the

world is that posses various superior characteristics

including low attenuation, high controllability of

chromatic dispersion, high reliability and durability.

Silica fibers are classical fibers having long history;

however, their performances have been continuously

improved with improved manufacturing processes. In

this presentation, modern fiber fabrication will be

reviewed to realize high performance silica-based

specialty fibers such as precisely dispersion controlled

highly nonlinear fiber, ultimately low attenuation pure

silica core fiber, and multi core fiber with negligibly low

cross talk. In addition, applications based on advanced

optical fibers will also be introduced.

Oral 2-2F-3

Invited Speaker

New Progress on Specialty Fibers Jie Luo, Liangming Xiong, Huifeng Wei, Rui

Zhang, Jiangtao Guo, Tao Xia, Weijun Tong,

Kangkang Chen

State Key Laboratory of Optical Fiber and

Cable Manufacture Technology, Yangtze

Optical Fibre and Cable Company Ltd. R&D

Center, China Increasing attention has been paid to the design and

fabrication of specialty fibers, owing to their wide

applications and important potential especially in fiber

lasers and fiber sensors. We will present recent progress

in the fabrication of active and passive fibers and their

applications. Here the active fibers will be focused on

ytterbium-doped fibers (YDFs), and the passive fibers

on laser delivery fibers and nonlinearity photonic crystal

fibers (PCFs). In combination with YDFs and nonlinear

PCFs, a new progress in blue-enhanced supercontinuum

fiber laser will be described. We will also describe new

progress in the design and fabrication of sensing fibers

and polarization-maintaining fibers (PMFs) and their

application in fiber sensors and fiber optic gyro (FOG).

This will include a novel multimode fiber and a

modified demodulation algorithm for temperature

sensing, respectively, and also PMF, including PM-PCF,

for current sensing and FOG coil.

Oral 2-2G-1

Invited Speaker

A 240 Gb/s Self-coherent CO-

OFDM Transmission Applying

Real-Time Receiption over 48 KM

SSMF Xiao Xiao, Yang Qi

State Key Laboratory of Optical

Communication Technologies and Networks We have implemented a real-time FPGA-based CO-

OFDM receiver at 5.8 Gb/s. With a novel self coherent

scheme the complexity of real-time receiver is reduced.

The sub-band signal reception of 240 Gb/s multi-band

CO-OFDM transmission over 44 km SSMF has been

demonstrated using the real-time receiver with an error

floor as low as 1.74x10E-5.

Oral 2-2G-2

Invited Speaker

All-Optical Modulation Format

Conversion from OOK to Advanced

Formats Based on Fiber

Nonlinearity Akihiro Maruta


PGC2012


Osaka University We review all-optical modulation format conversion

schemes from non-return-to-zero on-off-keying (NRZ-

OOK) signals to return-to-zero (RZ) M-ary phase-shift-

keying (PSK) or multilevel amplitude-phase-shift-

keying (APSK) signal based on parametric amplification

and/or cross-phase modulation in optical fibers.

Oral 2-2G-3

Numerical Evaluation of Robust and Spectrally

Efficient 112Gbit/s Transmission Employing

Digital Backward Propagation Rameez Asif, Chien-Yu Lin, Bernhard Schmauss

University of Erlangen, Germany

We report on the complexity comparison of the

digital signal processing (DSP) module to compensate

chromatic dispersion and non-linearities, i.e. digital

backward propagation (DBP) algorithm. The DP-QPSK,

DP-QDB and DP-16QAM encoded signals at a bit-rate

of 112Gbit/s for N-channels are transmitted over

1640km fiber link. The fiber link consists of Large Aeff

Pure-Silica core fiber (LA-PSCF) with 20 spans of 82km

each. No in-line optical dispersion compensator is

employed in the link. The DBP algorithm is based on the

logarithmic step-size based split-step Fourier method (L-

DBP). The results depict that DP-QDB can be used to

transmit 112Gbit/s signals with an spectral efficiency

(SE) of 4-b/s/Hz, but at the same time has a higher

tolerance to non-linear transmission impairments. By

utilizing DP-QDB modulation, comparative system

performance w.r.t DP-16QAM transmission can be

achieved with 60% less computations and with a step-

size of 205km.

Oral 2-2G-4

Optical Signal to Noise Ratio Monitoring Using

a Noval Optical Notch Filtering Scheme Yi Yu, Jing Yang, Changyuan Yu


In this paper, we propose a novel optical notch

filtering scheme, which can be used for optical signal to

noise ratio (OSNR) monitoring. OSNR monitoring for

10-Gb/s and 40-Gb/s NRZ-OOK, NRZ-DPSK and Duo-

binary signals are demonstrated in VPI transmission

maker 7.6. Low bandwidth photo detector adopted in the

monitoring scheme would provide immunity to

chromatic dispersion (CD) and low cost solution.

Oral 2-2G-5

Impact of Local Storages on Performance of

PONs Sandu Abeywickrama, Elaine Wong

National ICT Australia

Implications of implementing a local storage within

Passive Optical Networks to enhance Video-on-Demand

delivery are critically examined in this work. We

conduct packet level simulations in order to study

enhancements of Quality of Service attributes. Two

architectures where the Passive Optical Network is

equipped with and without a local storage server are

simulated to study the behavior of packet delays. Further,

power consumption models for the mentioned two

architectures are formulated to study the impact on

network operational power requirement by the addition

of local storage equipment. We present simulation

results and findings of numerical analysis of power

consumption models to study the trade-off between

enhanced performances versus increased power

requirement.

Oral 2-2H-1

Invited Speaker

Room-temeprature THz quantum

cascade laser sources Mikhail Belkin, Karun Vijayraghavan,

Frederic Demmerle, Min Jang, Aiting Jiang,

Christian Grasse, Markus-Christian Amann

The University of Texas at Austin I will report on our progress towards creating the

first mW-power-level room-temperature electrically-

pumped semiconductor source of 1-5 THz radiation. Our

approach is based on engineering an InGaAs/AlInAs/InP

quantum cascade laser medium that simultaneously

produces two mid-infrared pump fields and provides

giant optical nonlinearity for intra-cavity terahertz

difference-frequency generation. Non-collinear phase-

matching scheme is used to extract THz radiation along

the whole length of the laser waveguide. Currently, our

1-mm-long devices provide emission in 1.2-4.5 THz

range with over 25 µW of THz power output at room

temperature with over 0.3 mW/W2 mid-infrared-to-

terahertz conversion efficiency. Our devices are

amenable to mass production in existing

telecommunication and quantum cascade laser foundries.

Oral 2-2H-2

Invited Speaker

Mode-locking of terahertz quantum

cascade lasers Joshua Freeman

Laboratoire Pierre Aigrain, Ecole Normale

Supérieure, CNRS.

Short pulses of light may efficiently be obtained

from the constructive interference between the laser

longitudinal modes, which requires a fixed phase

relationship between them, referred to as mode-locking.

This is typically achieved through passive (e.g. saturable

absorbers) or active (e.g. acousto-optic modulators)

elements that induce energy losses for continuous-wave

emission, and favour the pulses formation. These

techniques have for instance known a very large success

with Ti:Sa near-infrared lasers and led to the generation

of femto or pico-second pulses. Current challenges

concern the modelocking of terahertz quantum cascade

lasers (QCLs), in a part of the spectrum still lacking

compact and efficient sources. In the present work, we

show how modelocking of THz QCLs is now achieved.

We will discuss active modelocking using the gain


PGC2012


modulation at the QCL cavity round-trip frequency, as

well as pulse generation by injection seeding of the QCL.

Oral 2-2H-3

Single-mode narrow beam divergence surface-

emitting concentric-circular-grating terahertz

quantum cascade lasers Guozhen Liang, Houkun Liang, Qi Jie Wang



We demonstrate single-mode narrow beam

divergence surface-emitting terahertz frequency

quantum cascade lasers with second-order distributed

feedback concentric-circular-gratings. The grating is

designed to provide distributed feedback for single-

mode operation, and surface emission for efficient and

directional optical power out-coupling. One fabricated

structure achieves a side-mode suppression ratio around

30 dB with a concentrated six-fold rotationally

symmetric far-field pattern, while a further modified

structure demonstrates single-mode operation with an

improved far-field beam divergence as narrow as ~15Â°

in two dimensions. In addition, the devices show a peak

output power approximately three times higher than in

ridge-waveguide lasers of similar size, whilst

maintaining similar threshold current densities and

maximum operating temperatures.

Oral 2-2H-4

Study of Design-Dependent Electroluminescence

Linewidth of Quantum Cascade Lasers Rafatul Faria, Orchi Hassan, Fariah Hayee, Md. Shahadat

Hasan Sohel, Asif Ahmed, Muhammad Anisuzzaman Talukder

Bangladesh University of Engineering and Technology, Dhaka,

Bangladesh

Electroluminescence Linewidth (EL) is an important

Quantum Cascade Laser (QCL) parameter that

determines the gain and optical property of the cavity.

EL is determined by intrasubband scattering of electrons

in two lasing subbands and intersubband scattering of

electrons between two lasing subbands. The rates of

different scattering mechanisms significantly depend on

quantum mechanical design of QCL active regions and

on operating conditions such as the applied bias and the

temperature. In this work, we have compared ELs for the

commonly used InGaAs/InAlAs and GaAs/AlGaAs

material systems; for the lattice-matched and strain-

compensated material compositions; and for the

diagonal and vertical optical transition active regions.

We note that the InGaAs/InAlAs material system has a

larger EL than that of GaAs/AlGaAs material system.

Strain-compensated structures have larger EL than that

of lattice-matched QCLs. Also the diagonal transition

active region QCLs have a larger linewidth than that of

the vertical transition active region QCLs.

Oral 2-2H-6

Quantum Cascade Laser Wavelength Tuning

due to Temperature-Dependent Index of

Refraction Asif Ahmed, Orchi Hassan, Md. Sohel, Fariah Hayee, Rafatul

Faria, Muhammad Talukder

Bangladesh University of Engineering and Technology (BUET)

In this work, we study the change in the emission

wavelength of quantum cascade lasers when the index of

refraction of the lasing medium changes due to a change

in the temperature. We find that the gain of the laser and

the wavelength of the longitudinal optical modes in the

laser cavity change significantly as the temperature

changes. As a result, the output wavelength of QCLs

changes as the temperature changes. When the

wavelength of the lasing mode changes so much that one

of the neighboring modes becomes the closest mode to

the peak of the gain spectrum, the lasing hops to the

neighboring mode. We also find that the mode-tuning

and mode-hopping depend on the longitudinal length of

the laser cavity. The tuning range increases for a smaller

cavity, while the mode-hopping becomes more frequent

for a longer cavity as the temperature increases.

Oral 2-3A-1

Invited Speaker

Technologies for developing Next-

generation of Diagnostics Sandeep Kumar Vashist

HSG-IMIT

There have been numerous advances in diagnostics,

having existing market worth billions of dollars that is

rapidly expanding due to improved healthcare facilities

and their outreach. We will provide a brief overview of

our developed technologies and their critical importance

for the development of next-generation of diagnostics.

These include the proprietary rapid and highly sensitive

immunodiagnostic procedures (based on ELISA, surface

plasmon resonance, chemiluminescence, fluorescence,

microfluidics, or nanomaterials); novel one-step

chemistries for biomolecular and/or nanomaterial

functionalization on bioanalytical platforms; signal

enhancement strategies employing nanomaterials and

polymers; novel reagentless and highly precise

electrochemical glucose biosensing strategies for

diabetic monitoring; and, the development of a

centrifugal microfluidic ―LabDisk‖•platform, with

integrated sample handling and process automation, for

nucleic acid analysis and immunoassays. Most of the

developed technologies have been successfully

transferred to industrial/healthcare settings, while the

remaining ones are being explored for

commercialization or being developed in close

collaboration with industrial partners.


PGC2012


Oral 2-3A-2

Invited Speaker

Lanthanide-Doped Nanoparticles

for Applications in Biology Fiorenzo Vetrone

Université du Québec, INRS-EMT Luminescent lanthanide (Ln3+)-doped nanoparticles

are emerging as useful tools in diagnostic medicine and

therapeutics. These nanoparticles undergo a multiphoton

absorption process know as upconversion, where the

near-infrared (NIR) excitation light is (up)converted to

higher energies spanning the UV to the NIR. This

process is the result of the multitude of Ln3+ electronic

energy states, many of which are equally spaced leading

to the sequential absorption of multiple NIR photons.

These energy states are long-lived eliminating the need

for fs laser excitation and thus, upconversion can be

observed following excitation with low energy cw NIR

diode lasers. In contrast, other multiphoton excited

nanomaterials (e.g. quantum dots, gold nanorods)

require the simultaneous absorption of photons from

ultrafast fs lasers. Here, we present the synthesis of

upconverting Ln3+-doped fluoride nanoparticles and

show how these nanoparticles could be used as multi-

functional bioprobes for imaging and nanothermometry

of malignant cancer cells.

Oral 2-3A-3

Invited Speaker

Surface electromagnetic waves in a

graphene-based Bragg grating for

biosensing applications Ting Yu

Nanyang Technological University We propose a graphene-based Bragg grating and

experimentally investigate the excitation of surface

electromagnetic waves (SEW) at Bragg grating/air

boundary. Since surface electromagnetic wave is non-

radiative electromagnetic mode, we employ prism

coupling technique for the excitation. The graphene-

based Bragg grating consists of alternating layers of high

(graphene) and low (PMMA) refractive index materials.

Then, we proposed a biosensor based on this concept

and analytically demonstrated. Two sensing methods

such as angular measurement and phase difference

measurement have been employed to investigate the

sensor configuration. The obtained results show that the

phase difference measurement gives increased

sensitivity than that of angular measurement. Also, the

enhanced sensitivity of the configuration is possible

when an additional graphene termination layer is

introduced in the periodic structure. The proposed

graphene-based periodic structure could be a good

replacement for metal films for biosensing applications.

Oral 2-3A-4

A model of an optical biosensor detecting

environment Phan Anh D., Trasy Dustin A., Viet Nguyen Ai

Department of Physics, University of South Florida Tampa,

Florida 33620, USA

Heller et al. (Science 311, 508 (2006)) demonstrated

the first DNA-CN optical sensor by wrapping a piece of

double-stranded DNA around the surface of single-

walled carbon nanotubes (CN). This new type of optical

device can be placed inside living cells and detect trace

amounts of harmful contaminants by means of near

infrared light. Using a simple exciton theory in

nanostructures and the phenomena of B-Z structural

phase transition of DNA, we investigate the working

principle of this new class of optical biosensor from

DNA by using the nanostructure surface as a sensor to

detect the property change of DNA as it responds to the

presence of target ions. We also propose some new

design models by replacing carbon nanotubes with

graphene ribbon semiconductors

Oral 2-3B-1

Invited Speaker

Bioimaging and Sensing with Novel

SERS Techniques Dinish U. S., Malini Olivo

Singapore Bioimaging Consortium (SBIC),

A*STAR

We demonstrate two novel SERS strategies for the

ultrasensitive detection of proteins using i) hollow core

photonic crystal fiber (HC-PCF) and ii) nano mechanical

stress sensor. Further, we also demonstrate an in vivo

cancer detection using novel SERS nanotags. HCPCF-

SERS platform helps in multiplexed detection of

biomarkers at extremely low concentration and sample

volume of ~ 10nL. In the second modality, vibrational

frequencies of antibody conjugated SERS reporter

molecules on substrates are shifted in quantitative

correlation with the concentration of the targeted antigen.

This frequency shift is attributed to mechanical

perturbations in the antibody-reporter complex as a

result of antibody-antigen interaction forces. We showed

that "stress-active" SERS reporters can be used for

multiplexed detection of antigen-antibody bindings.

Additionally, we also demonstrate the in vivo cancer

detection in mouse model using sensitive SERS

nanotags constructed with various Raman reporter

molecules.

Oral 2-3B-2

Invited Speaker

Laser-based Optical Bio-imaging

Platforms – From Protein Dynamics

in a Monolayer to Bulk Chemical

Changes in a Living Fat Cell Jonathan Hobley

IMRE Since the development of lasers many fields of

research have been advanced. This is because the power

and the properties of the intense and polarized laser light

can be harnessed in so many ways to ask different

questions of a medium being studies.


PGC2012


In our labs we develop and use a range of techniques

that can be used to study systems of biological

importance. We have developed new techniques to

measure nanosecond dynamics in photosynthetic

reaction centers using Brewster angle reflectometry. We

have also developed photothermal imaging methods to

detect small metal nanopartilces, for use in tracking

biomolecules in live cells. In addition we have made

advances in live cell imaging to track the chemistry of

fat generation in adipocytes using both Raman and

Fluorescence Lifetime Imaging Microscopy. In this talk

I will expand on the techniques that we have developed

and on the biological problems that we are addressing.

Oral 2-3B-3

Invited Speaker

Solid State Enhanced Emission of

Organic Molecules for Bio-Imaging Hyong-Jun Kim

Kongju National University

Fluorescence labeling is a very important analytical

technique for probing the structure of living cells.

Inorganic quantum dots have been used in

immunofluorscence labeling due to their high quantum

yield, high molar extinction coefficients, broad

absorption with narrow light emission, and good photo

physical and chemical stability. Despite of these

promising properties of semi-conducting quantum dots

for fluorescence labeling, cyto-toxicity is a critical

problem in any living cell or animal experiments.

Alternative choices are dye-loaded latex particles and

dye-doped silica colloids having improved photostability

compared to conventional dye molecules. However, dye-

loaded particles also have a critical limit of brightness

due to the self-quenching when high density of dyes

present at the nanoparticle surface. Thus, developing

highly emissive, biocompatible, and chemically readily

modifiable luminescent materials is strongly desired.

Here, it is reported the enhanced photoluminescence of a

pure organic molecules for possible use in the field of

immunofluorescence labeling.

Oral 2-3B-4

Ultrasensitive low-cost solution to contamination

detection in air and water Vladislav Yakovlev

Texas A&M University

The quality of surrounding air and drinking water are

essential for life. Many biomedical sensing approaches

rely on sensing minor presence of chemical species in

blood, urea, salvia and exhaled air. The newly proposed

and experimentally demonstrated low-cost approach,

which relies on a recently developed high-Q cavity,

allows highly specific Raman analysis of chemical

species at the molecular concentration levels of nM or

less in water solutions and one part per trillion or less in

air.

Oral 2-3C-1

Invited Speaker

Epitaxially Re-grown Photonic

Crystal Surface Emitting Lasers Richard Hogg

University of Sheffield

Photonic crystal surface emitting lasers utilise

multidirectional feedback giving rise to standing waves

in-plane, enabling vertical emission. These devices offer

power scaling with area, low divergence, and control of

the beam shape and polarization by crystal design. They

offer the ultimate in control for a semiconductor laser.

PCSELs have previously been realised with wafer

fusion, or epitaxial regrowth. In both cases forming

voids within the structure. Whilst such structures have

strong index contrast, achieving high coupling strength

poses significant challenges. Furthermore, void

containing materials may suffer from

repeatability/reliability issues.

I will outline design rules for all-semiconductor

PCSELs. High coupling coefficients may be obtained

along with the freedom to vary the refractive index

contrast between the features in the photonic crystal

allowing flexibility of design. The optimisation of

MOVPE regrowth and realisation of a laser operating at

room temperature is discussed.

Oral 2-3C-2

Invited Speaker

Intersubband Transition-Based

Devices in AlGaN/GaN

Heterostructures Gad Bahir

Technion-Israel Institute of Technology

The progress achieved in terms of epitaxial growth

of ultrathin layers, III-nitride semiconductors (GaN, AlN,

InN and their alloys) have emerged as excellent

materials for intersubband transition (ISB) photonics

devices in the near-infrared and in particular in the 1.3-

1.55 microns wavelength window used for fibre optics

telecommunications. Quantum cascade detectors (QCD)

have emerged as an appealing alternative to quantum

well infrared photodetectors (QWIP). In contrast to

QWIPs, QCDs are photovoltaic devices and they can be

operated at zero bias. In this presentation, following

introduction to polar nitrides heterostructure and

intersubband based devices, I will first review the

progress in terms of GaN-based quantum cascade

detectors (QCD) operating at near infrared and mid

infrared wavelengths. I will then show that these devices

are intrinsically extremely fast based on femto-second

time resolved measurements of the photocurrent. Finally

I will discuss recent achievements towards GaN based

THz QCLs.


PGC2012


Oral 2-3C-3

1.55 µm InAs/GaAs Quantum Dots and High

Repetition Rate Quantum Dot SESAM Mode-

locked Laser Z.Y. Zhang

EPSRC National Centre for III-V Technologies, Department of

Electronic and Electrical Engineering, University of Sheffield,

Sheffield

Semiconductor saturable absorber mirror (SESAM)

modelocked high pulse repetition rate (≥10 GHz) diode-

pumped solid-state lasers are emerging as an enabling

technology for high data rate coherent communication

systems owing to their low noise and pulse-to-pulse

optical phase-coherence. Quantum dot (QD) based

SESAMs offer potential advantages to such laser

systems in terms of reduced saturation fluence, broader

bandwidth, and wavelength flexibility. Here, we

describe the development of an epitaxial process for the

realization of high optical quality 1.55 µm In(Ga)As

QDs on GaAs substrates, their incorporation into a

SESAM, and the realization of the first 10 GHz

repetition rate QD-SESAM modelocked laser at 1.55

Âµm, exhibiting ~2 ps pulse width from an Er-doped

glass oscillator. In addition, with a high areal dot density

and strong light emission, this QD structure is a very

promising candidate for many other applications, such as

laser diodes, non-linear and photonic crystal based

devices.

Oral 2-3C-4

Influence of Vertical Coupling on the Lasing

Operation of Quantum-Dash Laser Mohammed Zahed Mustafa Khan, Tien Khee Ng, Boon S. Ooi

Photonics Laboratory, King Abdullah University of Science

and Technology

The authors numerically investigated the

consequence of vertical coupling among multi-stack

InAs quantum dash (Qdash) laser structure on the lasing

bandwidth. The developed model is based on multi-

population carrier-photon rate equation and incorporates

inhomogeneous broadening due to dash size or

composition fluctuation, homogeneous broadening of

optical gain, and the multi-longitudinal photon modes. In

addition, the effect of Qdash layers emitting at different

wavelength, and the carrier coupling (tunneling)

between adjacent stacks, are also accounted for. The

results predict a direct relation between the lasing

bandwidth and the barrier thickness and hence enhanced

lasing bandwidth could be achieved by decoupling the

Qdash layers (large barrier thickness). Moreover, the

model further affirms the non-equilibrium distribution of

carriers among Qdash layers in a multi-stack laser

structure.

Oral 2-3C-5

Dynamics and Modulation Characteristics of

Graphene Nanoribbon Array Lasers Guangcun Shan, Chan-Hung Shek, Xinghai Zhao

Department of Physics and Materials Science, City University

of Hong Kong

In this work, we present a device model consisting of

a three-variable rate equations that takes into account

carrier capture and Pauli blocking in semiconductor

GNR array lasers in terms of the role of the capture rate

and the gain coefficient in GNR array nanolasers.

Furthermore, our GNR-array nanolaser device model

can be determined to be two distinct two-variable

reductions of the rate equations in the limit of large

capture rates. The first case leads to the rate equations

for quantum well lasers, exhibiting relaxation

oscillations dynamics. The second case corresponds to

GNRs nearly saturated by the carriers and is

characterized by the absence of relaxation oscillations.

Our results here demonstrated that GNR-array as gain

material embedded into a high finesse microcavity can

serve as an ultralow lasing threshold nanolaser with

promising applications ranging widely from optical fiber

communication with increasing data processing speed to

digital optical recording.

Oral 2-3D-1

Invited Speaker

Fiber grating based tunable devices

for optical communications Xuewen Shu

Aston University

Tunable devices will be key enabling devices in

future high speed optical communication systems and

reconfigurable networks. Tunable devices can

significantly increase flexibility in optical networks,

reduce inventory and also overcome some problematic

barriers such as chromatic dispersion. We discuss here

tunable devices based on fiber grating technology. Fiber

gratings including both long period gratings (LPGs) and

short period gratings (FBGs) are very attractive in

developing tunable devices since they are fully

compatible with optical fiber systems. They also have

advantages such as low loss, easy fabrication, low cost

and potential good tunablility. We will first review

tunable filters based on FBGs and LPGs. The tunability

can be in wavelength, transmission loss or bandwidth.

We will then discuss tunable dispersion compensators

and tunable dispersion slope compensators based on

fiber grating technology. We will also discuss different

tuning mechanisms including mechanic tuning, thermal

tuning and also highly interesting optical tuning.

Oral 2-3D-2

Invited Speaker

Ultra-broadband photonic

transport system Hideyuki Sotobayashi

Aoyama Gakuin University

Due to the continuous demands for transmission

capacity expansion, the optical fiber transmission system,

a basic infrastructure of the ICT industry, needs the


PGC2012


break-through technology. In addition to the existing C-

and L-band WDM networks, updated photonic transport

system is to utilize all available wave-bands including

O-, E-, S-, C-, L-, and U-bands for transporting ultra-

broadband information data.

In this presentation, after overviewing the recent

progress of the photonic transport system, its enabling

technologies are presented. Especially, our demonstrated

photonic transport network, which uses endlessly single-

mode holy fiber and quantum-dot semiconductor lasers,

is discussed. Finally, prospect of ultra-broadband

photonic transport system is discussed for the new

generation networks.

Oral 2-3D-3

A spectral effective transmission beyond a

baseband of the multimode fiber Marcin Kowalczyk

Institute of Telecommunications, Warsaw University of

Technology

An article presenting results of theoretical analysis

and experimental results of the using transmission

beyond the baseband of MM fibers based on the SCM

technique with a focus on digital transmission in the

256-QAM format. A successful four-channels

transmission (4 x 200 Mboud) of this kind has been

presented.Obtained results indicate on a large potential

of this approach type.

Oral 2-3D-4

Enhancing dynamic extinction ratio of a fiber-

based seed source Yasuhiro Kamba, Yuki Wada, Kazuyoku Tei, Shigeru

Yamaguchi, Jun Enokidani, Shin Sumida

Tokai University

We report enhancing dynamic extinction ratio (DER)

of a fiber-based seed source. The seed source consists of

a waveguide Mach-Zenhder intensity modulator (MZIM)

and a 1064 nm-wavelength continuous wave laser diode.

The phase drift in MZIM is stabilized by a feed back

bias control system. As a result we achieved a DER of

39 dB at the seed source at 2 ns pulse duration and 200

kHz pulse repetition rate. The seed pulses were followed

by an acoustic optical modulator (AOM) in order to

enhance DER by a factor of 105 and amplified by the

fiber amplifier with a factor of 2×104. We demonstrated

the second harmonic generation (SHG) of the amplified

pulses with a Periodically Poled Lithium Tantalate

crystal. As a result of DER enhancement a higher

conversion efficiency of SHG was achieved when the

AOM is working.

Oral 2-3D-5

Compression of picosecond pulses with a

chirped volume Bragg grating Atsushi Taketomi, Kazuyoku Tei, Shigeru Yamaguchi, Shin

Sumida, Jun Enokidani

Tokai University

We demonstrate the pulse compression of the

picosecond laser system with an all fiber master

oscillator power amplifier configuration containing a

chirped volume Bragg grating (CVBG) at 1064 nm. We

use a passive mode-locked Yb doped fiber laser with a

10 ps pulse width at a 45 MHz repetition rate for the

master oscillator. Optical pulses from the oscillator are

amplified by a single stage fiber amplifier. Then the

spectra of amplified pulses are chirped, and the spectral

widths spread due to self phase modulation (SPM) in the

fiber amplifier. The chirped pulses are compressed by

CVBG. In this system, we achieve the pulse width of

2.89 ps, and the average output power of 1.3 W.

Oral 2-3E-1

Invited Speaker

Photonic circuits for the new

information age: Faster, smaller

and smarter Benjamin Eggleton

University of Sydney

My talk will review our recent progress in

demonstrating nonlinear photonic circuits (photonic

chips) for ultrafast all-optical signal processing based on

highly nonlinear materials and nanophotonic circuits and

structures. I will review the underlying principles of the

optical nonlinearity and show how it can be massively

enhanced using slow light in photonic crystal circuits. I

will also review our recent breakthrough demonstrations

of ultrafast all-optical signal processing and emerging

applications of photonic chip based all-optical

processing in quantum processing and nonlinear optical

phononics (opto-acoustic interactions).

Oral 2-3E-2

Invited Speaker

The Impact of Nonlocal Response in

Plasmonic Metamaterials David Smith, C. Ciracì, Y. Urzhumov

Center for Metamaterials and Integrated

Plasmonics and Department of Electrical and

Computer Engineering, Duke University

As plasmonic nanostructures and metamaterials are

pressed to their ultimate limits in terms of focusing and

confining light to sub-nanoscale regions, it can be fully

expected that the typically applied, classical model for

the response of the conduction electrons of a metal will

fail. The classical model for electron response ignores

effects due to the quantum nature of the electrons—

effects that become important when features of

plasmonic nanostructures approach dimensions on the

order of a few nanometers or smaller.

There are varying ways of addressing the effects

related to quantum interactions in a metal. For example,

a hydrodynamic model for the conduction electron

response can be introduced that presumably provides a

fuller description of the plasmon optics. The

hydrodynamic model includes a quantum pressure term,

which introduces spatial derivatives into the equation of


PGC2012


motion for the electrons; thus, the electronic response

acquires a nonlocal character that becomes increasingly

important as light is increasingly confined to sub-

nanometer regions. The nonlocal response of the metal

requires a slightly more complex treatment, including

the introduction of additional boundary conditions. As a

first step in clarifying this more complex response, we

describe a set of experiments that allows us to correlate

the nonlocality of the conduction electron distribution

with measurable optical shifts in the plasmon resonance

of film-coupled nanoparticles. The results of the

experiments can be correlated with full-wave numerical

simulations, allowing us to infer a value for the Thomas-

Fermi screening length that naturally sets the scale for

nonlocal effects in the hydrodynamic model. We find a

value for the Thomas-Fermi screening length that is

consistent between the experiments and simulations, as

well as with previously reported values. Though the

hydrodynamic model is likely an incomplete description

of the electron response, it nevertheless provides an

intuitive basis to understand some of the limitations that

arise as extreme plasmon nanodevices and optical

metamaterials are designed.

Oral 2-3F-1

Invited Speaker

Molten Core Fabrication of

Specialty Optical Fiber: Merits and

Marvels (and Occasional Misfits) John Ballato

Clemson University

This presentation will review efforts to fabricate

novel specialty optical fibers from crystalline precursors.

Such fibers, realized using a molten core technique

where the core phase melts at a temperature where the

cladding glass softens and draws, have yielded

crystalline semiconductor and inorganic core phases as

well as novel glasses that could not be realized using

conventional optical fiber methods such as OVD or

MCVD. These novel compositions will be shown to

enable a range of useful and heretofore unavailable

properties from the fibers. The subtleties and

opportunities (and occasional problems) associated with

the material phase diagrams, thermodynamics, and

kinetics will also be highlighted as a means to show the

novelty of specialty optical fibers that can be made.

Oral 2-3F-2

Invited Speaker

Rare earth doped optical fiber

fabrication by the granulated silica

method Valerio Romano, Dereje Etissa, Manuel Ryser,

Soenke Pilz

University of Bern, IAP The granulated silica method allows to produce

active optical fibers with a large variety of dopants and

gives freedom in the choice of index distribution,

microstructure and dopant concentration. This is

especially true if the solgel method is used to produce

the doped granulated silica. In particular, the sol-gel

method allows the inclusion of P2O5 and thus, in

combination with Al2O3, higher dopant concentration of

active rare earths such as Ytterbium possible.The price

one has to pay for these advantages over standard

preform and fiber production techniques are the

intrinsically higher OH contentent and the high

scattering losses. However, both disadvantages are of

low importance in applications where only short fiber

lengths are involved, such as fiber lasers and amplifiers.

In this talk the state of the art of the method is

presented as well as the last progresses in the production

of ytterbium (Yb) doped optical fibers are presented.

Oral 2-3F-3

Invited Speaker

Focus on glass-powder method for

the fabrication of specialty optical

fibres Georges Humbert

XLIM CNRS Université de Limoges Until the end of the nineties, most optical fibres were

fabricated by drawing preforms made with the MCVD

process that enables the fabrication of optical fibres with

very low attenuation losses for telecommunication

applications. In 1996, researchers at Bath University

have re-adapted the ―stack-and-draw‖• technique. This

process that consists in drawing a stack of silica

capillaries down to a fibre offers much more flexibilities

for the fibre design (topology, index contrasts...) giving

access to new properties and functionalities, and opening

new application areas for which attenuation losses are

less determinant. These achievements were followed by

increasing efforts on the development of fabrication

processes enabling the use of different optical materials.

Here, we present fabrication results obtained with a

renewed process from the seventies, based on glass

powders. This technology gives an access to unusual

material combinations offering new fibre properties.

Advantages and drawbacks of this process will be

discussed.

Oral 2-3F-4

Invited Speaker

Optical materials for active fibers

made by powder-in-tube method Sergey Semjonov

Fiber Optics Research Center

Technological issues related with fabrication of

preforms for active fibers by powder-in-tube method are

discussed.


PGC2012


Oral 2-3G-1

Invited Speaker

Comparison of Various Bandwidth-

Efficient LDPC coding schemes for

Tb/s Superchannel Long-haul

Transmission Qi Yang

State Key Laboratory of Optical

Communication Technologies and Networks We compare the transmission performance of

various bandwidth-efficient LDPC coding schemes.

Equipped with 4 dB improvement in OSNR sensitivity,

we demonstrate 1 Tb/s CO-OFDM over 1600 km SSMF

transmission at spectral efficiency of 3.2 bit/s/Hz.

Oral 2-3G-2

Invited Speaker

Optical Monitoring of Optical

OFDM Signals in Bandwidth-

Flexible Optical Transport

Networks Calvin C K Chan, Kam-Hon Tse

The Chinese University of Hong Kong Optical orthogonal frequency division multiplexing

(OFDM) has recently been widely considered and

adopted as a robust optical modulation format for optical

transmission in future bandwidth-flexible optical

transport networks, due to its superior tolerance in both

fiber chromatic dispersion and polarization mode

dispersion as well as its high bandwidth efficiency and

flexibility in various networking applications. In order to

assure the signal integrity and reliability of the flexible

optical transport networks network and performance

monitoring of the optical OFDM signals are

indispensable. This work aims at designing simple low-

cost yet effective optical schemes to monitor the

passband adjustment status of the bandwidth-variable

wavelength selectable switches resided at each optical

cross-connects along the lightpath as well as to retrieve

its signal quality parameters without requiring the costly

coherent receivers. Hence, the practicality of optical

OFDM signals employed in next generation spectrum

efficient and flexible optical transport networks could be

greatly enhanced.

Oral 2-3G-3

Invited Speaker

Polarization Considerations for

Amplitude Regeneration in a Fiber

Optical Parametric Amplifier Chester Shu, Xiaojie Guo, Gordon K. P. Lei,

Xuelei Fu, Hon Ki Tsang

The Chinese University of Hong Kong,

Department of Electronic Engineering and

Center for Advanced Research in Photonics Polarization-division-multiplexing (PDM) scheme

has been commonly adopted for high-bandwidth

communications since it doubles the spectral efficiency

without reducing the distance between symbol states in

the constellation diagram. In this work, we investigate

amplitude regeneration of PDM data signals in a gain-

saturated fiber optical parametric amplifier (FOPA). We

first characterize the polarization dependence of the

FOPA. Our theoretical analysis and experimental results

reveal that PDM signals exhibit very similar

characteristics of gain saturation when dual-orthogonal

pumps are applied in the setup. Further improvement

can be obtained by optimizing the pump powers of the

FOPA to yield polarization-insensitive regeneration

performance. We report experimental demonstration on

amplitude regeneration of 40 Gbit/s DPSK, 80 Gbit/s

PDM-DPSK, and 100 Gbit/s PDM-DQPSK signals.

Oral 2-3G-4

LED-camera communication system with RGB

coding Junhao Hu, Changyuan Yu, Yuen Sam Kwok, Francois Chin

A*STAR Institute for Infocomm Research (I2R), Singapore

The increasing installation rate of camera in cell

phone has created a big opportunity to build a camera

based communication system, since almost every smart

phone has a high-resolution build-in camera. It is truly

possible to use LEDs as the transmitters and camera in

cell phones as the receiver to establish a LED-camera

communication system to send and receive information.

In this paper, we first used QR-code as the coding

method to encode information and displayed on the LED

displayer. We have also proposed a new RGB coding

method to increase the transmission rate by 3 times. In

addition, the distance, transmission rate and stabilization

effects are also studied in details. We demonstrated the

prototype of our system, which can achieve 1.5 meter

transmission distance with up to 2M/s transmission rate.

It may have many potential applications in the future,

such as secure communication between smart phones

and car-to-car communications.

Oral 2-3H-1

Invited Speaker

Chalcogenide microstructured

optical fibers Johann Troles, Laurent Brilland

University of Rennes

Chalcogenide glasses are known for their large

transparency in the mid-infrared and their high linear

refractive index (>2). They present also a high non-

linear coefficient (n2), 100 to 1000 times larger than for

silica, depending on the composition. we have developed

a casting method to prepare the chalcogenide preform.

This method allows optical losses as low as 0.4 dB/m at

1.55 µm and less than 0.05 dB/m in the mid IR. Our

group has prepared various chalcogenide MOFs

operating in the IR range in order to associate the high

non-linear properties of these glasses and the original

MOF properties. For example, small core fibers have

been drawn to enhance the non linearities for telecom

applications such as signal regeneration and generation

of supercontinuum sources. On another hand, in the 3-12

µm window, single mode fibers and exposed core fibers


PGC2012


have been realized for Gaussian beams propagation and

sensors applications respectively

Oral 2-3H-2

Invited Speaker

A Field Deployable Compound

Specific Isotope Analyzer based on

Quantum Cascade Laser and

Hollow Waveguide Andrei Deev, Jie Wei

PEER Institute We first demonstrated that Quantum Cascade lasers

could have orders higher coupling efficiency into small

bore long HWG than blackbody light sources, and when

coupled with capillary GC, the online sensor has

potential performance to match Mass Spectroscopy

sensors[1]. A field deployable Compound Specific

Isotope Analyzer (CSIA) coupled with capillary

chromatogrpahy based on Quantum Cascade (QC) lasers

and Hollow Waveguide (HWG) with precision and

chemical resolution matching mature Mass Spectroscopy

has been achieved in our laboratory. The system could

realize 0.3 per mil accuracy for 12C/13C for a Gas

Chromatography (GC) peak lasting as short as 5 seconds

with carbon molar concentration in the GC peak less

than 0.5%. Spectroscopic advantages of HWG when

working with QC lasers, i.e. single mode transmission,

noiseless measurement and small sample volume, are

compared with traditional free space and multipass

spectroscopy methods.

Oral 2-3H-3

Invited Speaker

Design of Low-loss THz Waveguides

and Devices by using the Finite

Element method Azizur Rahman

City University London

Design of low-loss waveguides suitable for this

frequency band is presented here by using the

computationally efficient finite element method. It is

shown here that by incorporating a dielectric coating

modal loss of a metal-clad hollow air-core THz

waveguide can be significantly reduced. Design of THz

guided-wave devices such as power splitters and narrow

band filter are also shown along with the optimization of

active region of a quantum cascade laser to stabilize

mode to prevent beam instability.

Oral 2-3H-4

Theoretical investigation on low-loss IR-

transmitting hollow-core metallic fiber with

double cladding Meng Zhang, Xia Yu, Ping Shum, Wu Yuan


We report on a novel hollow metallic fiber (HMF)

design that offers low transmission loss for mid-infrared

wavelength. The fiber is so designed that the outer

cladding is consisted of a double-layer metamaterial,

which can efficiently reflect transverse-magnetic (TM)

wave. As compared with a normal HMF structure, the

double-layer metamaterial reduces the mode guiding

loss for TM01 mode and fundamental mode by two

orders of magnitude in the mid-infrared region.

Oral 2-4A-1

Invited Speaker

Advancement of photonic crystal,

quantum dot and surface plasmon

technologies to ultrafast optical

switching, medical imaging and

mobile sensing applications Kiyoshi Asakawa

University of Tsukuba

This paper reviews our advanced fundamental

fabrication and design technologies of nanophotonic

devices developed recently. First, precise electron-beam

lithography and dry-etching of GaAs-based

semiconductors achieved extremely low-loss and high-

performance interferometric two-dimensional photonic

crystal (2D-PC) waveguides. Second, a topology

optimized design of nano-scale air-hole arrays enabled

non-straight 2D-PC waveguides with high-transmissions

comparable to a straight waveguide, while sophisticated

design of stacked metal-dielectric hole-arrays enabled

transmission phase control in a surface-plasmon based

optical beam steering device. Third, selective-area

growth of InAs-based quantum dots (QDs) using a

metal-mask MBE demonstrated two novel structures.

One is optical nonlinear QD-ensembles with different

absorption wavelengths at different positions in an

integrated 2D-PC ultrafast all-optical switching circuit.

The other is a multi-color near-infrared light source with

a shape-controlled broadband spectrum suitable for an

optical coherence tomography (OCT). These devices

will pave the road to new applications in the telecom

photonic network, medical imaging and mobile sensing

systems.

Oral 2-4A-2

Invited Speaker

Study of fundamental properties of

synthesized gold nanoparticles using

multifunctional reducing agent for

Arsenic removal Amit Kumar Sharma, Soni Shankhwar,

Mulayam Singh Gaur

Interdisciplinary Research Laboratory,

Department of Physics, Hindustan College of

Science and Technology, India A less time consuming method for synthesis of

spherical gold nanoparticles (GNPs) with enhanced

fundamental properties and binding of arsenic is

reported here. In synthesis process, the multifunctional

reducing has very good potential to minimize the size of

the precursor. The colorimetric behaviour and UV-Vis

spectra have been discussed with its fundamental


PGC2012


properties. The size and shape measurement of GNPs

was confirmed by transmission electron microscopy

(TEM) which indicates the mean diameter less than 10

nm. The multifunctional conjugated GNPs show the

binding with arsenic-III (As-III) by SEM/EDX mapping

as presented in figure 1. Transmission electron

microscopy revealed the particle shape and size. The

other fundamental properties like Zeta potential, zeta

deviation, scattering coefficient, absorption coefficient,

diffusion coefficient; polydispersity index, effective

particle size and electrophoretic mobility have been

observed. Further, the present study can be utilized to

design the nanoprobe for the removal of arsenic in water

samples.

Oral 2-4A-3

Optical Deposition of Nano Carbon Materials

for Fiber-based Saturable Absorbers Ye Yang, Huan Huan Liu, Kin Kee Chow



We demonstrated the manipulation of carbon

nanotubes (CNTs) and graphene on optical fiber ends for

saturable absorbers (SAs) by optical deposition method.

The nonlinear absorption of the prepared CNT-based SA

is characterized and 0.9%-modulation depth is obtained.

Furthermore, graphene can be deposited on fiber ends by

using such controllable process. It is found that the

desired optical power for triggering the CNTs to deposit

towards the fiber ends is different from that of graphene.

Potential applications of these carbon-based SAs are

expected in mode-locked fiber lasers as well as Q-

switched fiber lasers.

Oral 2-4A-4

Effect of material loss on the energy

transportation along the metallic

nanovoid/nanoparticle chain structures Dongdong Li, Dao Hua Zhang, Yueke Wang, Zhengji Xu, Jun

Wang, Fei Qin, Wenjuan Wang


In this work, we investigate the effect of material

loss on the energy transportation along the metallic

nanovoid/nanoparticle chain structures. By employing a

finite element method, we show that, for closely spaced

metallic nanovoids/nanoparticles, the metallic nanoviod

structure has a higher tolerance to material losses. Our

study showed that the energy transportation along such a

chained system is determined by the polarizability of the

nanovoid/nanoparticle and the coupling coefficient of

adjacent nanovoids/nanoparticles. When the inter

nanovoid/nanoparticle spacing is much smaller than the

skin depth, the polarizability of the

nanovoid/nanoparticle dominate the energy

transportation process. We theoretically show that the

polarizability of a nanovoid system is less sensitive to

the material losses. Such kind of nanovoid chain

structure can be used as a wave guide with high degree

of energy confinement for various applications, such as

nano-optical communications and subwavelength

imaging.

Oral 2-4A-5

Dynamics of extremely high-repetition-rate

Yb:YAG self-mode-locked lasers K. W. Su, W. Z. Zhuang, G. W. Huang, Yi-Fan Chen, Y. F.

Chen

Department of Electrophysics, National Chiao Tung University

Compact high-repetition-rate pulse lasers have

extensive applications in radio-over-fiber

communication, academic research, master oscillator

fiber amplifier, and advanced industry usage. We

demonstrate the invention and dynamics of extremely

high-repetition-rate spontaneous mode-locked lasers

based on Yb:YAG chip with diamond heat spreader. The

effects of doping concentration, thickness of chip, cavity

length were first studied under plano-parallel cavity. In

addition to linear-polarized mode-locked laser output,

interesting polarization dynamics within coupled

polarization states was illustrated. We also investigate

the degenerate transverse and longitudinal modes under

plano-concave cavity. Further, we found the condition of

generating higher-order harmonic mode-locking. The

repetition rate of watt-level continuous mode-locked

lasers was 80-600 GHz.

Oral 2-4A-6

Graphene induced optical modulation on side

polished fiber Kan Wu, Yu Wang, Kian Ping Loh, Ping Shum


We report a demonstration of graphene induced

optical modulation on side polished fiber. Single layer

graphene is placed on side polished fiber to form an

absorption layer. By controlling the voltage applied on

the graphene layer, the absorption of graphene can be

tuned by 0.14 dB. The total device insertion loss is ~0.8

dB which means it has the potential to be an optical

modulator with ultra-low optical insertion loss compared

with current LiNO3 modulator.

Oral 2-4B-1

Invited Speaker

Active optical elements – helpful

tools in light microscopy Alexander Jesacher, Monika Ritsch-Marte

Division of Biomedical Physics, Innsbruck

Medical University Active optical elements such as deformable

membrane mirrors and liquid crystal spatial light

modulators can enhance the quality and even extend the

capabilities of microscopic imaging with light.

The talk gives a brief introduction to active optical

elements that can be useful in microscopy and discusses

some application fields for the different types of light

modulators.

It further aims at explaining how aberrations can be

measured and corrected in microscopic imaging. Results


PGC2012


from imaging live mouse embryos with third harmonic

generation microscopy are presented.

Finally, it will be shown how liquid crystal spatial

light modulators as dynamic diffractive elements can be

used to perform image multiplexing. This technique

allows the simultaneous realization of different contrast

methods such as phase contrast or differential

interference contrast as well as the simultaneous

recording of multiple axial planes. Prospects and limits

of the technique are discussed.

Oral 2-4B-2

Structured illumination based wide-field

fluorescence microscopy systems development

for 3D tissue imaging Vijay Raj Singh

SMART Singapore

Three-dimensional (3D) thick tissue imaging is an

invaluable tool for visualizing directly the mechanisms

of different biological processes. Background ―haze‖•

is common in wide-field based fluorescence microscopy

systems and structured illumination-based methods have

been developed to reject it and thus visualizing more

clearly the in-focus fluorescent-plane. In this work we

present the development of structured illumination based

methods for different wide-field fluorescence

microscopy systems applied to thick 3D tissue imaging

applications. To further enhance the performance, we

have developed photon reassignment method for 3D

visualization of biological tissues utilizing structured

illumination wide-field microscopic imaging system,

which provides higher signal-to-noise (SNR) and signal-

to-background (SBR) ratios of the reconstructed images.

The developed method seeks to better utilize the

volumetric photons by using the ‗prior knowledge‘ about

the optical transfer function of the structured

illumination microscopy, and provides the reassignment

of fluorescence photons generated from off-focal plane

excitation improving in-focus signal strength.

Oral 2-4B-3

Invited Speaker

Whispering gallery mode

microresonators for biomolecular

sensing and spectroscopy Wilson Kerry

Imperial College London

Whispering gallery mode (WGM) microresonators

comprise an ultrasensitive glass of sensors that are

rapidly making inroads to a variety of fields. The

potential for single molecule detection has made them

highly attractive for biosensing applications in particular.

Recently we have shown the utility of a WGM biosensor

system with a fluidically resolved flow cell for

characterising the interaction of different proteins with

synthetic surfaces supported on silica microspheres.

This work demonstrated the potential of WGM

biosensors for characterising biointerphases at the

nanoscale and reveal mechanistic detail unattainable

with previous methods. Current work is focused on

combining the photonic sensing modality with

plasmonic enhancement. By combining nanoparticles

with WGM microresonators we are developing a

platform for surface enhanced resonant Raman

spectroscopy (SERRS) capable of ultrasensitive sensing

and chemical spectroscopy.

Oral 2-4B-4

Invited Speaker

Dual-Faced Nano-Mushrooms for

Tri-functional Cell Diagnosis:

SEARs/Fluorescence Signaling,

Immune Targeting, and Drug

Delivering Fan-Gang Tseng, Hsin-Yi Hsieh, Chau-Hwang

Lee

NEMS Institute, ESS Dept., National Tsing

Hua Univerity, Taiwan

This presentation introduces a monodispersed

mushroom-like fluorescent nanoparticle with dual-faces

and tri-functions for SERS-active Raman sensing,

fluorescence detecting, cancer marker targeting, and

drug carrying and delivering inside a cell. A one-step

oxygen plasma process was employed to tailor

commercial-available fluorescent PS beads into

corrugated hemispheres and simultaneously modify the

entire surface with carboxylic groups, and then a gold

film was coated on the corrugated hemisphere for

SEARs. Sulfo-NHS-SS-biotin disulfide linker and anti-

CD44 monoclonal antibody could be modified

simultaneously onto the top gold surfaces and bottom

carboxyl groups through Au-S and peptide bonds,

respectively. The AuFNMs can be employed to target

cell-surface glycoproteins CD44 on cancer cells and

release the loads inside cell membrane via cleaving the

disulfide bonds in cytoplasm after endocytosis of

30minutes. For the applications of 3D confocal particle

tracking and Raman mapping, the AuFNMs demonstrate

excellent long-lasting single-particle fluorescence and

superior biomolecule sensing ability.

Oral 2-4C-1

Invited Speaker

Plasmonic trapping in nano-scale

metallic structures for SERS and

microfluidic applications H.P. Ho, Q.W. Kang, H.F. Lu, H.X. Zhang, J.J.

Chen

Department of Electronic Engineering, The

Chinese University of Hong Kong, Shatin,

N.T. Hong Kong Previous report has shown that metallic nano-islands

fabricated from thermal annealing of a gold film may be

used as plasmonic traps for metallic nanoparticles. Such

nano-traps may provide an important tool for the

manipulation of nano-sized objects after having been

immobilized in the micron range by a focused laser

beam. We have been studying the trapping


PGC2012


characteristics of various nano-sized metallic features

including nano-strips, nano-rings, nano-disks and other

hybrid structures. Simulation results reveal interesting

properties such as particle flow switching in microfluidic

channels, very large capture range, plasmonic

waveguide sensors and trap-and-steer operations. The

SERS performance of these structures based on a trap-

and-sense strategy is discussed also.

Oral 2-4C-2

Optimization of the photonic crystal fiber by

using genetic algorithms Jyun-Hong Lu, Chii-Chang Chen

Department of Optics and Photonics, National Central

University, Taiwan This paper presents an optimized structure of

photonic crystal fiber (PCF) by using genetic algorithms

(GAs) and finite different frequency domain method.

Our goal is to find a structure having small diffraction

angle and good confine property. We also compare the

optimal field profile with fitting Bessel function.

Although the diffraction angle of Bessel functions is

narrower than that in our case, the mode of the

optimized structure provides a better confinement. The

diffraction angle of optimal PCF can be decreased about

18% comparing to the non-optimized case.

Oral 2-4C-3

Magnetobiexciton in three layers graphene and

its effects on graphene optical properties Chu Thuy Anh, Vo Thi Hoa, Nguyen Tri Lan, Nguyen Ai Viet

Institute of Physics, Hanoi

The optical properties of multilayers graphene could

be controlled by layers distance, or by emerging the

graphene in strong magnetic field. In the cadre of this

paper, a strong magnetic field has been injected through

a multilayers graphene, in which there are the presence

of biexciton. There is no analytic solution for potential

equation, an approximations using Morse potential has

been proposed. The dependence of some first energy

levels on magnetic field and graphene layers distence

has been investigated.

Oral 2-4C-4

Silicon-Porous Silicon based photonic crystals Zhiya Dang

Centre for Ion Beam Applications (CIBA), Department of

Physics, National University of Singapore, Singapore

1D, 2D, and 3D Silicon-Porous Silicon based

photonic crystals in Mid-Infrared and Terahertz range

have been fabricated using proton beam writing and

subsequent electrochemical anodisation. The

characterization results fit well with the simulation and

show a great tunability of the band structure by

infiltration of porous silicon with different medium,

which have great potential applications in sensing, etc.

Due to flexibility of fabrication methods, photonic

devices, such as waveguide, cavity, and integrated

photonic circuit can be built on a single chip.

Oral 2-4C-5

Bound-to-Continuum Transition in

GaAs/AlGaAs QWIP Mukul Kumar Das, Md. Aref Billaha

Dept. of Electronics Engineering, Indian School of Mines,

Dhanbad, India

In this paper we have simulated GaAs/AlxGa1-xAs

QWIP to find out eigen energy, wave function and

absorption coefficient for bound to continuum transition

using CROSSLIGHT-APSYS simulation software.

Well width is chosen in such a way that there exist only

one bound state inside the well which ensures that only

bound to continuum transition is possible here. However,

by increasing well width, the number of bound states can

be increased and in that case bound to bound transition

may be observed. Results show that with increase in x,

peak absorption coefficient is increased but the detection

window becomes narrower. Peak absorption coefficient

of 593.63 cm-1 is obtained at wavelength of 8.799 µm

which is in good agreement with the experimental result

where peak value of absorption coefficient is obtained at

8.745 µm.

Oral 2-4D-1

Invited Speaker

Volume Bragg grating controlled

fiber lasers Peter Zeil, Fredrik Laurell

Department of Applied Physics, Royal

Institute of Technology

In recent years, rare earth doped fiber lasers have

experienced remarkable progress in terms of power

scaling, warranting their use in numerous research and

industry applications. Especially, the rapid rise in output

powers an be attributed to the fact that the fiber laser

design naturally promotes good thermal handling

capabilities, over-all efficiency and exceptional spatial

beam qualities. Moreover, the broad fluorescence

spectra of the used rare earth gain media allow great

flexibility in operating wavelength. However, proper

restriction and stabilization of the spectral properties has

to keep up with the rapid increase in power levels,

without sacrificing the advantages of fiber lasers. In our

work, we demonstrate how the implementation of

volume-Bragg grating can cater for that demand. We

show how this generic technology can be applied to

increase the spectral brightness and to permit flexible

wavelength-tuning and discuss its advantages and

limitations with respect to other approaches.

Oral 2-4D-2

Accurate Determination of Initial Value of

Theoretical Evaluation of Rare Earth Doped

Fiber Lasers with High Reflectance Fatemeh Kazemizadeh, Fatemeh Shahshahani

Alzahra University

A method for accurate prediction of theoretical

evaluation of rare earth doped fiber lasers initial value

with high reflectivity valid for both four-level and three-


PGC2012


level systems is introduced in this paper. In this method

eliminating iteration process causes the reduction in

computation time of solving the rate equations in respect

to the standard model. The proposed method has been

used for numerical evaluation of an erbium doped fiber

laser with end reflectivity higher than 0.6. It is shown

that the simulation results with the theoretical standard

models are compatible and the relative difference

between two models is approximately lower than 10

percent. It has been shown that the new proposed

method can be improved by optimization of output

mirror reflectivity.

Oral 2-4D-3

Analysis and Application of Scalable Non-linear

Equalization in 112Gbit/s DP-64QAM Coherent

Transmission over Single Mode Fibers

Rameez Asif, Muhammad Khawar Islam, Muhammad

Zafrullah

University of Engineering and Technology, Taxila, Pakistan

We report on the performance comparison of

alloptical and digital signal processing techniques to

compensate fiber transmission impairments, i.e.

chromatic dispersion (CD) and non-linear (NL)

distortions. The methods are evaluated in 112Gbit/s DP-

64QAM system over 800km single mode fiber (SMF).

The digital signal processing module is implemented by:

(a) electronic dispersion compensation (EDC) and (b)

digital backward propagation (DBP). Furthermore, we

numerically compare optical backward propagation

(OBP) with optical phase conjugation (OPC) techniques,

i.e. mid-link spectral inversion (MLSI), pre-dispersed

spectral inversion (PD-SI) and optical phase conjugation

with non-linearity module (OPC-NM). The results depict

improvement in system performance by a factor of 4dB

of signal input power by all-optical signal processing

methods, which is comparative with ideal digital

backward propagation (DBP). These numerical

investigations will be helpful in deployment of scalable

equalization of nonlinearities in future optical networks.

Oral 2-4D-4

Single mode realization of low loss liquid filled

birefringent photonic crystal fibers (PCFs) Partha Maji, Partha Roychaudhuri

IIT Kharagpur

We have studied the birefringence property of liquid

filled PCF and its operation in the single mode region.

Birefringent property for different values of air-filling

fraction has been studied in detail. We have taken into

consideration different value of refractive index filled in

two diagonally opposite air-holes. Cut-off properties for

different infiltrating liquid has been performed and it has

been found that PCF infiltrated with higher RI liquid is

suitable for broader range of single mode operation. The

present structure provides very los loss and that also can

be minimized with higher no of air-hole rings without

effecting the birefringent property. Our study will be

helpful in designing a birefringent PCF from

conventional symmetrical PCF by infiltrating liquids in

two diagonally opposite air-holes and proper choice of

lattice parameter for single mode operation at a desired

wavelength of interest.

Oral 2-4D-5

Invited Speaker

Similariton Lasers and Oscillators John Harvey, Vladimir Kruglov

University of Auckland

Self similar solutions of nonlinear partial differential

equations are chirped solutions which maintain their

mathematical form, whilst being scaled in time and

amplitude. Standard techniques for finding such

solutions have been developed with applications in

nonlinear acoustics, plasma physics and other areas.

More recently these techniques have been applied to

locate new solutions of the NLSE, which are finding

increasing applications in high power amplifiers and

mode locked fibre lasers. Several such similariton

generation systems have been experimentally realised in

the last decade, taking advantage of different fibre

architectures. Chirped self similar pulse propagation has

now been demonstrated in both normal and anomalous

dispersion fibre amplifiers. These self similar pulse

amplification systems can be also used to build

similariton lasers, and this talk will compare these lasers

to other fibre laser systems, such as the ANDi laser and

the giant chirp fibre laser systems.

Oral 2-4E-1

Invited Speaker

ENZ Plasmonics and Optical

Metatronics Nader Engheta

University of Pennsylvania

The two fields of plasmonic optics and Epsilon-

Near-Zero (ENZ) metamaterials seem to address two

opposing goals: In the latter, one deals with increasing

the apparent wavelength for a given frequency, while in

the former the operating wavelength is shortened for a

given frequency. In my group we have been interested in

merging these two seemingly opposite fields together,

and develop an area, which we call ENZ plasmonics.

When nonlinearity and/or nonreciprocity are added to

the ENZ plsamonics, interesting features and novel

characteristics are resulted. This area has also been

instrumental in our efforts in developing the concepts of

―optical metatronics‖•, in which the fields of

electronics and photonics can be merged together in

order to modularize, standardize, and parameterize some

of the optical and electronic phenomena. In this talk, I

present an overview of our most recent work in ENZ

plasmonics and optical metatronics.


PGC2012


Oral 2-4E-2

Invited Speaker

Carbon Nanotube and Graphene

for Photonic and Optoelectronic

Applications Shinji Yamashita

The University of Tokyo

We review photonic and optoelectronic applications

of carbon nanotube (CNT) and graphene to such as light

emitting, nonlinear, photovoltaic, modulating, and

transparently conducting devices. We also present our

works on application to short-pulse fiber lasers.

Oral 2-4E-3

Bowtie Nanoantennas with Void Defects Kebo He, Ji Chen, Zhaoyu Zhang

Peking University Shenzhen Graduate School

The surface plasmon resonance (SPR) modes and

near field gap enhancement of bowtie nanoantennas with

void defects are studied numerically. According to the

location of the defects, we classify them into four

categories: inner, edge, base and vertex defects. Inner

and base defects have little impact on SPR modes and

gap enhancement while edge and vertex defects lead to

mode splitting and gap enhancement changing because

of the symmetry breaking. When defects on the edge

getting closer to the gap, the gap enhancement increases

even above that of the bowtie with no defects. These

properties are useful for the evaluation of bowtie

nanoantennas fabrication. Furthermore, we can extend

the control of the defect location to the defect properties

to get useful resonant modes and increase the gap

enhancement in applications such as broadband light

harvesting, ultrafast wavelength-sensitive photodetection

and fluorescent detection for two or more targets.

Oral 2-4E-4

Optical Fiber Tip: Nanotweezer, Nanoantenna

and Plasmonic Hotspot Samir Mondal, Sudipta Sarkar Pal, Pawan Kapur

CSIR-Central Scientific Instruments organization

We have introduced a technique to grow novel

optical fiber tip (OFT) which can be widely used in

nano-photonics research. It takes help of capillary action

and surface tension meniscus of hydrofluoric acid (HF)

around the fiber during etching process to grow the

ultrafine OFT. The optical fiber used has different core

material, which is etched at higher rate in HF compared

to its cladding. The optical properties of the probe

makes the tip very attractive as nano-optical tweezer,

optical nanoantenna, probe for surface enhanced and tip

enhanced Raman scattering (SERS and TERS) etc. The

nano structure is also very effective for higher harmonic

generation. To validate our claim we have explored few

applications of the OFT, such as Bessel beam generation,

second harmonic generation (SHG), optical tweezer and

optical nanoantenna generating plasmonic hotspot.

Oral 2-4E-5

Plasmon-Modulated Photoluminescence of

Individual Gold Nanostructures Hailong Hu, Huigao Duan, Joel K. W. Yang, Ze Xiang Shen


We performed a systematic study on the

photoluminescence and scattering spectra of individual

gold nanostructures that were lithographically defined.

We identify the role of plasmons in photoluminescence

as modulating the energy transfer between excited

electrons and emitted photons. By comparing

photoluminescence spectra with scattering spectra, we

observed that the photoluminescence of individual gold

nanostructures showed the same dependencies on shape,

size and plasmon-coupling as the particle plasmon

resonances, as shown in Fig.1. Our results provide

conclusive evidence that the photoluminescence in gold

nanostructures indeed occurs via radiative damping of

plasmon resonances driven by excited electrons in the

metal itself. Moreover, we provide new insight on the

underlying mechanism based on our analysis of a

reproducible blue shift of the photoluminescence peak

(relative to the scattering peak), and observation of an

incomplete depolarization of the photoluminescence.

Oral 2-4F-1

Invited Speaker

New flexible techniques for ultra-

stable ultra-short pulse generation

using stimulated Brillouin

scattering Raman Kashyap, Victor Lambin Iezzi,

Sebastien Loranger

Ecole Polytechnique de Montreal This paper will review recent advances in our

laboratory on a simple technique to generate ultra-short

pulses at repetition rates up to 80 GHz using stimulated

Brillouin scattering with minimum pulse widths of order

1 ps. The source is ultra-stable and has wide wavelength

tunability. Pulses may be easily tuned between ~1-10's

ps, and the repetition rate tuned to multi-GHz

frequencies.

Oral 2-4F-2

Invited Speaker

Electrical fiber components and

applications Walter Margulis, Mikael Malmström,

Oleksandr Tarasenko, Zhangwei Yu, Patrik

Rugeland

Dep. Appl. Phys., Royal Institute of

Technology Phase, intensity, polarization and wavelength control

of light in silica fibers with electrodes is possible. To

this end, the core of the fiber is subjected to an electric

field or to a stress perturbation caused by metal

expansion. The effects are very weak, but interferometry

assists in obtaing large effects by adding a small

variation over a long interaction length. Such fiber

components are spliced, packaged and used in a number


PGC2012


of photonic applications. Examples include Q-switching

or mode-locking fiber lasers and selecting single-pulses.

New efforts are presently made to extend these results to

wavelength conversion aiming at novel fiber laser

sources. The main limitations of the techniques currently

used and ways forward will be addressed.

Oral 2-4G-1

Invited Speaker

PICs for Advanced

Communications Systems Jinyu Mo

OCARO, China

Advanced InP technology is the enabling technology

to achieve monolithic PICs for next generation 100G

and beyond coherent systems. The integrated platform

offers footprint, power, power dissipation reduction and

cost reduction for next generation products. It is also the

evolution to support higher order programmable

modulation formats.

Oral 2-4G-2

Invited Speaker

OFDMA-PON for Next Generation

Access Networks John Senior

University of Hertfordshire

An approach to the implementation of an extended

reach othogonal frequency division multiple access

passive optical network (OFDMA-PON) is described for

deployment in the future access network. The high

performance network which can be operated at 100

Gbps over spans of up to 100 km provides for a variety

of desirable characteristics including enhanced resource

allocation flexibility, scalability and potentially lower

equipment cost/complexity while also supporting

multiwavelength operation. In addition, the OFDMA-

PON enables the convergence of the optical

infrastructures with standard wireless services providing

for the integration of wired and wireless technologies to

form a hybrid access network to support ubiquitous

broadband services. Next generation wireless

backhauling over the OFDMA-PON is also discussed

with solutions being provided to facilitate this

mechanism.

Oral 2-4G-3

Photonic Services for Real-time Applications Josef Vojtech, Vladimir Smotlacha, Pavel Skoda, Stanislav

Sima, Jan Radil, Miloslav Hula

CESNET

The paper introduces photonic service as a new type

of multi-domain, end-to-end network service, that

besides traditional data transmission enables also non-

data or real-time communication, e.g. the remote control

and sharing of different, typically unique, devices. We

proved the concept of photonic services on a specialized

metrology application - comparison of time scales,

where time offset between atomic clock is measured

over distance of 550 km.

Oral 2-4G-4

Long-Range Distributed Brillouin Fiber Sensor

Using Single-Sideband Modulation and in-line

Bidirectional EDFA Duc Minh Nguyen, Birgit Stiller, Jean-Charles Beugnot, Hervé

Maillotte, Mottet Alexandre, Jerome Hauden

NLO, Femto-st, Université de Franche-Comté We describe and demonstrate an alternative

technique to reduce the pump depletion and then

improve the sensitivity as well as the range in BOTDA

systems. Our BOTDA uses an anti-Stokes single-

sideband suppressed-carrier modulation to reduce the

pump depletion and a bidirectional EDFA to amplify

simultaneously the pump and the signal that propagate in

two opposite directions in the fiber. A 5-fold increase of

the signal to noise ratio at the fiber end comparing to the

standard DSB regime is reported in a distributed strain

measurements over a 50-km of single-mode fiber (SMF)

without any biased strain measurements. Measurements

with 100 km sensing fibers are also reported.

Oral 2-4G-5

Design of a Silicon-Plasmonic Hybrid Electro-

Optic Modulator Mu Xu, Jiayang Wu, Zhiming Zhuang, Fei Li, Tao Wang,

Linjie Zhou, Yikai Su

State Key Lab of Advanced Optical Communication Systems

and Networks, Department of Electronic Engineering,


We propose a racetrack ring based optical modulator

employing an electro-optic polymer infiltrated silicon-

plasmonic hybrid phase shifter. From simulation results,

an extinction ratio of higher than 15 dB is achieved at

1550-nm wavelength under a 1.2-V bias. A modulation

bandwidth of more than 100 GHz can be potentially

obtained due to a fast response speed of the Pockels

effect, a reduced RC delay, and a decreased quality

factor of the ring.

Oral 2-4H-1

Invited Speaker

Intense infrared single cycle laser

pulses for table-top ultrafast X-ray

science Francois Legare

INRS-EMT

Currently, femtosecond X-ray pulses in the keV

spectral range are only available at X-ray Free Electron

Laser (XFEL) facilities or at synchrotron facilities that

offer femtosecond slicing technology. The drawback of

such facilities, on top of large initial investment, is their

limited availability thus restraining the number of

experiments that could be performed. Another promising

approach to generate femtosecond X-ray pulses is High

Harmonic Generation (HHG). At the Advanced Laser


PGC2012


Light Source, we have developed a novel approach to

generate intense IR (wavelength > 1.7 micron) sub two

cycle laser pulses. This laser source is ideal to develop a

table-top soft X-ray beamline delivering femtosecond

pulses. HHG spectra for various gases will be presented

and discussed, in particular the observation of the Xenon

giant resonance at 100 eV, and an X-ray supercontinuum

extending to 1 keV photon energy with Helium.

Oral 2-4H-2

Invited Speaker

Terahertz spectroscopy and

imaging based on ultrashort pulse

laser Wen-Hui Fan

State Key Laboratory of Transient Optics and

Photonics, Xi‘an Institute of Optics and

Precision Mechanics, Chinese Academy of

Sciences, P. R. China With the rapid development of ultra-short pulse laser

and modern technologies, new techniques in terahertz

(THz) region came out continuously and impelled this

―almost unexplored‖•field emerging in our life. As a

novel coherent technique, terahertz spectroscopy and

imaging based on ultrashort pulse laser is providing a

new insight into the structural characteristics and

mechanism of the spectral responses in molecular level.

It is evident that THz spectroscopy has high sensitivity

to the conformation and structure of molecules as well as

its adjacent environment. Many chemical compounds

and biomolecules reveal rich and distinct absorption

features in THz region, which are relevant to

intramolecular modes and intermolecular modes arising

from hydrogen-bonding interaction, van der Waals force

and other weak interactions. Therefore, THz vibrational

spectra represent a characteristic ―fingerprint‖•of a

molecular substance. Investigation on combined THz

spectroscopy and imaging is significantly important in

substance identification, air-port security screening and

quality assurance

Oral 2-4H-3

High Performance GaSb/InAs Superlattice

Long-Wave Infrared Focal Plane Array Sarath Gunapala

NASA/Jet Propulsion Laboratory

Recently, demonstrated a high-performance

InAs/GaSb superlattice (SL) complimentary barrier IR

detector (CBIRD) that reached background limited

performance (BLIP) at 87 and 101 K with f/2 field-of-

view having BLIP D* values of 1.1x1011 cmHz1/2/W

respectively. 320x256 pixel detector arrays with 30 µm

pixel pitch were fabricated by dry etching through the

top contact, photosensitive absorber SL into the 0.5 µm

thick doped InAs0.91Sb0.09 detector common layer.

Ohmic contact metal was evaporated and unwanted

metal was removed using a metal lift-off process. A ¼

VGA format CBIRD FPA has been mounted onto the

cold finger of a pour fill dewar, cooled by liquid

nitrogen, and the detectors were biased at -128 mV.

Imagery was performed at a temperature of 78 K. This

initial array gave good images with more than 97% of

the pixels operability. The measured mean NEΔT was

18.6 mK at blackbody temperature of 300K with f/2 cold

stop.

Oral 2-4H-4

High-Q Fluoride Glass Microresonators for

Mid-Infrared Photonics Applications Ravi Jain

University of New Mexico

We propose and demonstrate a simple and reliable

method for fabricating high quality whispering-gallery

mode (WGM) optical microresonators in ―mid-IR

relevant‖•low-loss ZBLAN and InF3 glasses. Intrinsic

quality factors of 107 have been demonstrated,

providing great promise for WGM-based mid-IR devices.

Absorption-limited Q-factors of over 3x108 are

anticipated over the 2.0 to 3.2 µm MIR wavelength

range in ZBLAN and InF3 microresonators in the

foreseeable future.

Oral 2-4H-5

Infrared photoluminescence from Si/Ge

nanowire grown Si wafers Seref Kalem

TUBITAK-BILGEM

We report on the enhancement of infrared

photoluminescence of Si/Ge nanowire (NW) grown

silicon wafers which were treated by acid vapors. The

treatment modifies the wafer surface particularly at

defect sites such as pits by etching and inducing

oxidation at Si and Ge. Process can induce spatial

confinement with passivated crystalline Si surface where

bandedge emission is the dominant property in Si

capped strained Si/Ge NW wafers. However, deep-level

emission is favored for Si capped relaxed Si/Ge NWs.

Strong signals are observed at subband gap in Ge or Ge

capped Si/Ge NW grown wafers. It was found that PL is

a competitive property between the Si bandedge and

deep-level emission which is mainly attributable to Si

related defects, Ge dots and strained Ge. The

enhancement in BB and deep-level PL was discussed in

terms of oxygen diffusion related defects, dots and

carrier confinement effects.

Oral 2-4H-6

Gain Recovery Dynamics of Quantum Cascade

Lasers Muhammad Talukder

Bangladesh University of Engineering and Technology (BUET)

We study the gain recovery dynamics of quantum

cascade lasers when the operating conditions such as

electric field and temperature vary. We find that gain

becomes positive from negative and gradually increases

as the applied electric field increases from zero. We also

find that as the temperature increases, gain decreases

with a reduction in the depletion of the gain when the


PGC2012


pump pulse interacts. The recovery becomes faster with

less coherent oscillations as the temperature increases.

Oral 3-1A-1

Invited Speaker

Integrated optic devices for

entangled photon pair generation Krishna Thyagarajan

IIT Delhi

Sources generating photon pairs entangled in

different degrees of freedom are very interesting and are

expected to find applications in the field of information

and communication technologies. Spontaneous

parametric down conversion (SPDC) using quasi phase

matching is one of the most important processes used for

the generation of entangled photon pairs. Integrated

optic channel waveguides that confine and guide the

interacting waves over long interaction lengths can lead

to much higher efficiency for the SPDC process by

confining the interacting waves over a small cross

section over long lengths. By appropriate domain

engineering and waveguide design, the generated photon

pairs can exhibit entanglement in different degrees of

freedom such as polarization, spatial mode, etc. The talk

will review our recent work in the design of waveguides

for the generation of polarization, modal and path

entangled photon pairs and a novel proposal to achieve

entanglement in multiple degrees of freedom.

Oral 3-1A-2

On a pragmatic approach optical analogues of

gravitational attractors Damian San-Roman-Alerigi, Ahmed Ben Slimane, Tien Khee

Ng, Mohammad Alsunaidi, Boon S. Ooi

King Abdullah University of Science and Technology

In our work we theoretically demonstrate a refractive

index mapping to enable optical analogues to celestial

mechanics, where is possible to achieve light

confinement and trapping by means of a static, and

planar, refractive index mapping which could be

implemented under current technological and

[meta]material constraints at optical frequencies. The

mathematical and physical background to make possible

these effects bring forth an exciting ground to test

celestial mechanics in the laboratory, and provides the

key to enable miscellany of planar optical system that

are of great interest to photonic applications, namely

optical time delays, transient optical memories and

random resonators.

Oral 3-1A-3

High performance SiN waveguide optical

devices platform Xiaoguang Tu, Junfeng Song, Xianshu Luo, Tsung-Yang Liow,

Mingbin Yu, Guoqiang Lo


Silicon photonics has been attracting a lot of

research interests due to the merits of large-bandwidth

operation, low-power consumption and low cost.

Compared with Si waveguide, SiN show a much better

thermal stability and larger fabrication tolerance which

guarantee an excellent performance of the optical

devices based on it. On the other hand, the transmission

loss and coupling loss with Si waveguide are also

acceptable. These merits made SiN passive devices an

ideal platform for its integration with silicon based

active devices. In this paper, we present high

performance SiN strip and slot waveguide, MZI, ring

filter and AWG. We design and fabricated these devices,

with the demonstration of 0.6dB/cm low loss SiN strip

and slot waveguide, 20-channel micro-ring filter with

20GHz Channel spacing and 15dB cross-talk and high

performance multiple channel AWG. All of these results

demonstrate the amazing capability of this passive

platform based on SiN-material system.

Oral 3-1A-4

Tailored Resonance Dependence on Input

Optical Power in Silicon Microring Resonators Lian Wee Luo, Gustavo Wiederhecker, Kyle Preston, Michal

Lipson

Cornell University

We demonstrate the ability to tailor the resonance

dependence on input power in silicon microring

resonators using a passive technique by utilizing two

counteracting processes, free carrier dispersion blueshift

and thermo-optic redshift. In our fabricated silicon

microring resonators, we achieve an effective blueshift,

as well as effective redshift. We also design and

fabricate a power insenstive silicon microring that has a

five-fold improvement in cavity energy handling

capability compared to a regular microring.

Oral 3-1A-5

Gain Stabilization of Quantum-Dot

Semiconductor Optical Amplifier by

Introducing Tapered Waveguide Structure Kambiz Abedi, Ehsan Mohadesrad

Shahid Beheshti University

QD-SOAs in comparison with the bulk and

quantum-well SOAs (QW-SOAs) have shown

improvements in their output power, threshold current,

temperature stability, noise characteristics and also

presented interesting nonlinear properties. These and

other merits of QD-SOAs make them good candidates

for being used as building blocks of all-optical systems.

However, in QD-SOAs as well as SOAs because of the

carrier density decline in signal propagation direction,

gain along the waveguide is regionally different and

diminishing. In other words, as a result of increasing

stimulated emission due to the optical signal being

amplified along the active region, optical gain of the-

QD-SOA is non-linearly decreasing. In this paper, the

tapered waveguide structure for QD-SOA is introduced

and formulated for the first time. It‘s observed that by


PGC2012


employing the tapered waveguide, gain as the main

feature of the device shows more stability while the

optical signal is passing through the active region.

Oral 3-1B-1

Invited Speaker

Second Harmonic nanocrystals for

in-vivo optical imaging Ronan Le Dantec , Luigi Bonacina

SYMME, Université de Savoie

Second Harmonic nanocrystals have recently

emerged as promising probes for biomedical imaging.

These new exogenous SH biomarkers overcome some

limitations of conventional fluorescent contrast agents.

Among their unique advantages, excitation-wavelength

tunability for deep imaging, orientation retrieval

capability, coherent optical response and photostabitlity

will be firstly addressed through a series of our recent

investigations. Preparation of colloidal suspensions and

surface modification of KNbO3, LiNbO3, BaTiO3, and

ZnO nanomaterials will then be detailed as well as the

quantitative assessment of their SH properties by Hyper-

Rayleigh Scattering measurements. Multiphoton

imaging and biocompatibility of these nanomaterials

were also recently investigated on human healthy and

cancerous cell lines.

Finally, development of multimodal probes with SH

and magnetic properties can also be relevant for a

detection by complementary techniques like optical

microscopy and MRI. Among bi-functional materials,

our recent achievements in the chemical synthesis and

physical characterizations of BiFeO3 and Fe(IO3)3

nanocrystals will be presented.

Oral 3-1B-2

Invited Speaker

An Open-microcavity Biosensor

with Photonic-Crystal Structure for

Detection of Cardiac Biomarkers Bailin Zhang

Department of Biomedical Engineering,

University of Texas at San Antonio A biosensor with a unique open microcavity was

fabricated using a photonic crystal structure in a total-

internal-reflection configuration for rapid and sensitive

detection of cardiac biomarkers, Troponin I (cTnI). To

functionalize the sensor for specific detection of cTnI,

antibodies against cTnI were immobilized via covalent

bonding on the sensor surface. For improvement of the

detection sensitivity, a carboxyl-bearing polymer,

dextran (CM-Dextran) was further used to enhance the

antibody immobilization via covalent binding, which

increased antibody binding activities as well. The

functionalized sensors have been used for label-free

detection of cTnI in a buffer solution. Results indicate

that the detection limit of cTnI was as low as 1ng/mL, a

typical early-stage clinic level. In addition, we measured

cTnI in real blood plasma and demonstrated high

specificity for a functionalized sensor treated with

bovine serum albumin for blocking nonspecific binding.

Oral 3-1B-3

Optimized Bi-Metallic Film Over Nanosphere

SERS Substrate for Sensitive Detection of Folic

Acid Douglas Goh, U. S. Dinish, Malini Olivo

Bio-Optical Imaging Group, Singapore Bioimaging

Consortium, Agency for Science, Technology and Research

(A*STAR)

We report an optimized bi-metallic film over

nanosphere (BMFON) substrate platform for Surface

Enhanced Raman Scattering- (SERS-) based detection of

folic acid. Initially, the substrate was fabricated by spin-

coating polystyrene (PS) nanoparticle of diameter 400

nm on glass slide using sodium dodecyl sulphate (SDS).

These nanostructures were subsequently coated with 80

nm of silver, followed by 120 nm of gold layer. The

optimized substrate was analyzed by studying the SERS

performance with covalently anchored Raman-active

analyte, 2-naphthalene thiol (NT). It was found that by

increasing the PS concentration, the coverage of SERS-

active sites was increased and also point-to-point

variation was found to be only around 15%. We used

these substrates for proof-of-concept detection of folic

acid, which has been identified as a factor for risk of

cancers when consumed in high dosage. We found that

optimized BMFON substrates could provide a means for

sensitive SERS detection of folic acid.

Oral 3-1B-4

Invited Speaker

Visible to Near-Infrared

Lanthanide Emission for Molecular

Imaging Ka-Leung Wong

Hong Kong Baptist University Emissive lanthanide-based imaging probes have

become a potent alternative for most organic-based

counterparts due to several of their characteristics such

as long emission lifetimes, large Stokes shifts and sharp

fingerprint emission peaks etc. Their long emission

lifetimes also allow differentiation from short-lived

autofluorescence from biological entities by time-

resolved microscopy which is desired for better

bioimaging quality. Further, near-infrared (NIR)

radiation sits within the optical window in which light

penetration through biological tissues is maximum and

hence a better efficacy in molecular imaging could be

achieved. The seminar will thus cover lanthanide

complexes – with an organic chromophore chelated to

the emission center – emissive in the visible region (Eu,

Tb) and the NIR region (Nd, Yb) with highly efficient

luminescence as well as emissive lanthanide nano-

materials designed for molecular imaging.


PGC2012


Oral 3-1C-1

Invited Speaker

Application of the Resonance Light

Scattering for investigation of the

mechanisms of biological action of

photosensitizers: psoralen,

merocuanine 540 Alexander Potapenko, Tatiana Shmigol, Ilia

Pyatnitskiy, Mikhail Malakhov

Pirogov Russian National Research Medical

University

The Resonance Light Scattering (RLS) spectroscopy

allows for selective observation of aggregates of dyes

when strong electronic coupling exists among the

chromophores, even in multicomponent systems that

include a large fraction of monomers of the dye or other

aggregates. Using RLS method we revealed that upon

adding of salts to aqueous solutions of anionic dye

MC540 aggregation is induced. The Critical Agregation

Concentration (CAC) of salt drastically decreased with

increasing the valence of cations. The rate of MC540

photobleaching as well as its photodynamic

antimicrobial efficiency strongly increased in salt-

induced aggregated state. Dermatologists use psoralens

in PUVA therapy of skin diseases. UV irradiation of

psoralen leads to photoinduced aggregation of its

photoproducts. These aggregates are membranotoxic and

can induce mechanochemical hemolysis of erythrocytes.

Oral 3-1C-2

Invited Speaker

Photovoltaic-thermoelectric Hybrid

Solar Energy Harvesting Based On

Silicon Nanowires Gang Zhang

Department of Electronics, Peking University Solar energy is quite a promising solution to the

energy crisis, due to its huge availability and

environmental friendliness. The efficiency of

conventional solar cells is limited because about 50% of

the solar energy is lost to heat. Based on the

thermoelectric effect, it is in principle possible to further

convert the heat energy to electricity, which provides

new channel for solar energy harvest and may

significantly improve the efficiency. In recent years

there has been a lot of interest in the application of

thermoelectric materials for energy harvest. In this talk, I

will review the optical absorption in silicon nanowire

arrays and the thermoelectric property of nanowires. It is

interesting to find that nanowires can increase the optical

absorption, and at the same time, the thermoelectric

figure of merit is improved. These results make silicon

nanostructures very promising materials in application

of photovoltaic-thermoelectric hybrid solar energy

harvesting.

Oral 3-1C-3

Invited Speaker

Three Dimensional Photonic and

Biophotonic Devices Ajoy Kar

Heriot Watt University

Focussed Ultrashort laser pulses can modify the local

refractive index of certain materials, significant research

has been expended into using ultrafast lasers to fabricate

integrated optical devices. Integrated optical

waveguides – the optical analogue of wires – can be

simply fabricated by translating the sample in the path of

such short optical pulse trains, which effectively

amounts to writing the desired optical circuit in a

controlled way in that sample. This direct-write

approach offers several key benefits over conventional

fabrication techniques. It neither requires use of

expensive clean room facilities, nor involves complex

film deposition and subsequent etching processes. This

technology can also yield 3D structures, unachievable

through conventional techniques.

In my talk I will present how the ultrafast laser

inscription technology can be used to develop

components like switches, splitters/combiners,

amplifiers as well as photofluidic devices for

biophotonic applications.

Oral 3-1C-4

Light Scattering Efficiency of Oil Smoke

Seeding Droplets in PIV Systems Rami Zakaria, Peter Bryanston-Cross

Hansung University

Particle imaging velocimetry (PIV) is an imaging

technique that uses seeding particles for multiphase flow

visualization. This paper presents a theoretical study on

the effect of the refractive index of the seeding particles

on their scattering efficiency. The paper focuses on the

fluid smoke seeding technique and its problem of

producing low brightness images. The objective is to

optimize the flow seeding process by investigating the

correlation between the refractive index of the seeding

particles and the light intensity on the camera sensor for

a certain particle size and wavelength. A comparison

was performed between the conventional solid seeds and

the fluid droplets at the submicron range. It was found

that the peak scattering intensity in the case of the oil

smoke is 60% lower than the aluminum oxide for 0.3

microns particle diameter. Results were supported by

experimental work on standard oil smoke and aluminum

oxide particles.

Oral 3-1D-1

Invited Speaker

Optical Fiber Grating based

Technologies and Their

Applications: from Nuclear Fusion

to Medical


PGC2012


Lun-Kai Cheng, Willem Vliegenthart, Tobias

Habisreuther

TNO In the last decades, fiber optic (FO) sensor has

gained increasing acceptance. Among the different FO

sensor types, Fiber Bragg Grating is most widely used

due to its commercial availability and the unique

multiplexing potential. The latter feature enables the

development of large sensor array and/or sensor network

for multi-parameter sensing to measure temperature,

strain, pressure, vibration, flow, …. Other advantages of

FO sensors are intrinsically safe, unsusceptible to EMI,

potentially lightweight, small dimensions and can be

embedded and integrated in composite material. The

main application of FBG sensor is Structural Health

Monitoring (SHM) of civil engineering constructions.

FBG sensor systems for other applications such as

medical, oil&gas, public transport, aerospace, defense

and nuclear fusion are also presented or under

development. For special applications, corresponding

interrogation systems with dedicated features (detection

bandwidth >MHz, wavelength noise <fm/sqrt(Hz), ...)

are developed.

Oral 3-1D-2

Invited Speaker

Optical Fibre Sensors for Structural

Health Monitoring Tong Sun, Kenneth Grattan

City University London

Several fibre Bragg grating (FBG) -based optic

sensor systems have been developed and packaged at

City University London to monitor strain, temperature

and humidity in major structures, taking advantage of

their capability for sensitive measurement and the

multiplexing of a significant number of sensors along a

single optical fibre. The cross-sensitivity of FBGs to

strain and temperature has been taken into account in the

sensor packaging design to enable simultaneous

measurement of strain and temperature through effective

temperature compensation. This paper reports on the

work done in the field to monitor

strain/temperature/humidity in both large and small scale

structures, including composite, steel and limestone

structures and pantographs in the UK and Europe.

Oral 3-1D-3

Invited Speaker

A Robust Perimeter Intrusion

Detection System Using Fiber Bragg

Grating Sensors Jianzhong Hao

Institute for Infocomm Research, A*STAR,

Singapore Our patented Perimeter Intrusion Detection system

(PIDS) is the world‘s first Fiber Bragg Grating (FBG)

based commercially available solution for perimeter

fence security, which has been proven to outperform

other types of well-known PIDS solutions in the world

market. The unique armored-cable packaging provides

high sensitivity, crush resistance, and protection against

rodents. The sensor can provide fine granularity PID,

with a stated pin-pointing accuracy, for the intrusion

events tested that include aided or unaided climbs,

tampering and cutting of the fence, etc. It is also capable

of resolving nuisance events such as rain, birds sitting on

the fence and seismic vibrations, etc. This technology

has been adopted by ST Electronics for implementation

of a PIDS for Singapore Changi Airport‘s perimeter

fence to further strengthen security of the airfield. This

is the first time that such technology is being used for

perimeter security enhancement anywhere in the world.

Oral 3-1D-4

Invited Speaker

Intra-cavity Multi-FBG Sensing

system Based on Fiber Laser Yunxu Sun

Harbin Inst. Tech. Shenzhen graduate schoole

Some intracavity FBG sensing schemes based on

fiber laser are studied to improve the character of FBG

sensing, which are multiwavelength fiber laser (MWFL),

Fourier Domain Mode Locking(FDML) laser and

FDML pulse laser where the FBG sensors act as the

filter. The laser spectrum represent the spectrum of FBG

and their shift denotes the sensor‘s variation.

Experiments show that the intracavity sensing based on

MWFL provides a high OSNR and narrow output

spectrum, which leads to a high sensing resolution.

However, the FDML gives no benefit for intracavity

FBG sensing SNR and bandwidth. There are excellent

multiplexing method for the FBG sensing by FDML,

which increases the number of multiplexing FBG

sensors. We develop an intracavity FBG sensing system

based on FDM pulse laser that gives a preferable

character of the resolution and OSNR and a probable

large number of FBG multiplex.

Oral 3-1E-1

Invited Speaker

THz metamaterials and waveguides

based on polymers Alexander Argyros

The University of Sydney

This paper will present our current work on the use

for structured polymer and polymer-metal composites

for the manipulation of THz radiation. Polymer

microstructured waveguides developed in the context of

photonic crystal fibres can be scaled up - after some

careful considerations - for use at THz frequencies. The

addition of metal allows other varieties of waveguides,

but more importantly, allows for metamaterials to be

fabricated using fibre drawing methods. The

construction of subwavelength metal wire arrays allows

the permittivity of the metameterial to be controlled and

subwavelength split ring resonators allow control of its


PGC2012


permeability. Thus drawn-metamaterials allow the basic

units required for controlling the electromagnetic

properties of a material to be fabricated using a scalable

method capable of volume production. Recent

developments in this field will be presented.

Oral 3-1E-2

Invited Speaker

Manipulation of Optical Vortices

using Spiral Nanoslots Eng Huat Khoo

Institute of High Performance Computing,

Singapore

In this abstract, optical vortices which formed

because of propagating surface plasmons (PSPs)

interference are studied. PSPs interfere to form optical

vortex through specially designated spiral nanoslots in

the near field region. The shape and size of optical

vortices could be tuned by using different type of spiral

nanoslits and wavelength.

The structure studied consists of m number of spiral

nanoslots, each with increasing radius from r to r+sp

and the angle from 0 to 2*/m radian. By varying the

positions and curvature of the nanoslots, optical vortices

of different radii are obtained. At some particular

combination of spiral nanoslits, the shape of the optical

vortices becomes non-circular due to the formation of

several phase singularity regions. These non-circular

optical vortices have ellipse or oblong shapes. They

could be used for trapping and manipulation of

molecules, or nanoparticles for wide range of

applications from information communication to bio

engineering.

Oral 3-1E-3

Experimental demonstration of integrated

horizontal Cu-Si3N4-Cu plasmonic waveguide

and passive components Shiyang Zhu


Technology, and Research)

The Si3N4 waveguide offers very low propagation

loss and feasibility for three-dimensional photonic

integration, but it suffers from large optical mode size

(thus low integration density) due to the relatively small

refractive index contrast between the Si3N4 core and the

SiO2 cladding. On the other hand, the metal-insulator-

metal plasmonic waveguide offers very tight light

confinement but it suffers from large propagation loss.

In this work, we integrate Cu-Si3N4-Cu nanoplasmonic

waveguides along with various passive components with

the conventional Si3N4 waveguides. The Cu-Si3N4-Cu

waveguide exhibits about 0.37-dB/um propagation loss

at telecommunication wavelengths of 1550 nm and

about 45% coupling efficiency with the conventional 1-

um-wide S3N4 waveguide through a simple 2-um-long

tapered coupler. Ultracompact 1x2 and 1x4 plasmonic

power splitters can split light almost equally with an

excess loss of about 3.5 dB and about 1 dB, respectively.

Oral 3-1E-4

Fabrication and optical evaluation of 1D and 2D

photonic metamaterial crystal Shimpei Tanabe, Yoshinori Nakagawa, Toshihiro Okamoto ,

Masanobu Haraguchi, Toshiro Isu, Genichi Shinomiya

Dept. of Optical Science and Technology, The University of

Tokushima

We fabricated the photonic metamaterial crystal

structure and evaluate their photonic properties. The

photonic metamaterial crystals studied here were

periodic structures with two types of surface areas where

two different dimension sprit ring resonators (SRR) were

fabricated on each area. These two different SRR were

designed to possess near but different resonance

frequencies. We performed Fraunhofer diffraction

measurement and reflection spectra measurement with

polarized light for one dimensional (1D) and 2D

photonic crystal structure. We successfully observed

optical properties of the sample which reflected photonic

crystal structure and sprit ring surface elements.

Oral 3-1E-5

Simulation of Optical Transmission

Enhancements for the Silver Nanoparticles

Embedded in the Silica Layer atop the Silicon

Substrate Hung-Ying Yang, Jia-Han Li

National Taiwan University

Different structures of the silver nanoparticles

embedded in the silica layer atop the silicon substrate are

simulated by the finite-difference time-domain method.

The effects of nanoparticle size, period, and the silica

layer thickness are studied and the comparisons of the

structures with and without the silica layers are given. It

is found that the optical transmissions are enhanced for

the cases with the silver nanoparticles embedded in the

silica layer.

Oral 3-1F-1

Invited Speaker

Advanced Optical Fibers and Their

Applications in Fiber Lasers Dong Liang, Kunimasa Saitoh, Fanting Kong,

Thomas Hawkins, Devon Mcclane, Guancheng

Gu

Clemson University

There are very strong needs for power scaling in

high power fiber lasers for a wide range of applications

in medical, industry, defense and science. Fiber

nonlinearities are the main limits to further scaling. The

fundamental solution is to scale mode areas in fibers

while maintaining sufficient single mode operation. Here

the key problem is that more modes are supported once

physical dimensions of waveguides are increased. There

are two basic approaches, i) lower refractive index

contrast to counter the increase of waveguide dimension

and ii) introduction of additional losses to suppress

higher order modes. Lower index contrast leads to weak

waveguides, resulting in fibers which can no longer be


PGC2012


coiled. Our research has been focused on designs for

significant higher mode suppressions. In this talk, we

will review our recent works in this area.

Oral 3-1F-2

Invited Speaker

Graphite and Charcoal Nano-

Particles Induced Saturable

Absorption for Passively Mode-

Locking the Erbium Doped Fiber

Lasers Gong-Ru Lin, Yung-Hsiang Lin,

National Taiwan University Graphite has shown similar optical properties with

graphene for ultrafast laser applications, including fast

recovery time, wideband tuning operation and high

optical damage threshold. Therefore, both graphite and

graphene based materials have emerged as the new class

of fast saturable absorbers for passive mode-locking

fiber lasers, which can replace the typical saturable

absorbers including semiconductor saturable absorber

mirrors (SESAMs) and carbon nanotubes (CNTs). In our

works, graphite and charcoal nano-particles are

confirmed to exhibit the saturable optical absorbance.

Moreover, two nano-particles have been used to

successfully mode-lock the erbium-doped fiber lasers. In

this work, the structural and optical properties of

graphite and charcoal nano-particles are investigated by

Raman scattering and linear/nonlinear transmission

spectroscopies. With the directly imprinted nano-

particles on the end-face of fiber connector, the

nonlinear saturable absorption induced passive mode-

locking of EDFL under high intra-cavity gain condition

can be achieved, providing pulsewidths shortened to 660

fs and 1.36 ps.

Oral 3-1F-3

Invited Speaker

Ho-doped fluoride fibres for mid-

infrared radiation emission Stuart Jackson

University of Sydney, Australia

I will present our recent work on diode-pumped Ho-

doped fluoride fibre lasers that operate cw, tunable, Q-

switched or mode-locked. I will discuss opportunities for

furthering the performance of these systems.

Oral 3-1F-4

All-fiber all-normal-dispersion passively mode-

locked Yb-doped ring laser based on graphene

oxide Xiaohui Li

School of electrical and electronic engineering, Nanyang


We demonstrate an all-fiber all-normal-dispersion

Yb-doped fiber laser that is passively mode locked by a

graphene oxide (GO)-polymer. Because of good solution

processing characteristic of the GO to polymer, a GO-

polymer saturable absorber (SA) was successfully

fabricated. Self-started mode-locking laser performance

was investigated comprehensively at different cavity

lengths, from 5, 24, to 94 m. The results showed that the

pulse duration varies from hundreds of picoseconds to

nanoseconds. In addition, the average output power of

the mode-locked fiber laser can reach up to 500 mW.

Furthermore, it was demonstrated that pulses with large

chirps can be more easily amplified to reach high output

power.

Oral 3-1F-5

Generation of Femtosecond Pulses Using

Actively Mode-Locked Fiber Ring Laser Dang Trang Nguyen, Teruo Muramatsu, Akihiro Morimoto

Department of Photonics, Ritsumeikan University

A new method to generate femtosecond optical

pulses by an actively mode-locked fiber ring laser is

presented. The fiber ring laser is operated by an optical

intensity modulator and an erbium-doped fiber amplifier.

The optical intensity modulator is driven by an electrical

pulse generator, which produces a nanosecond open-

time window for the mode-locked fiber ring laser. The

mode-locking generates the ultrashort optical pulses

with duration of about 420 fs and repetition rate of 9.188

MHz.

Oral 3-1G-1

Invited Speaker

Multi-channel multi-carrier

generation using multi-wavelength

frequency shifting recirculating

loop Nan Chi

Fudan University We propose and experimentally demonstrate a novel

scheme to generate optical frequency-locked multi-

channel multi-carriers (MCMC), using a recirculating

frequency shifter (RFS) loop based on multi-wavelength

frequency shifting single side band (MWFS-SSB)

modulation. Using this scheme, we successfully generate

dual-channel multi-carriers, and 28 subcarriers with 25-

GHz subcarrier spacing in Channel 1 are generated with

tone-to-noise ratio (TNR) larger than 20.0 dB while 29

ones in Channel 2 with TNR larger than 23.0 dB. We

also experimentally demonstrate that this kind of source

can be used to carry high-speed optical signal. The

required optical signal-to-noise ratio (OSNR) at the bit-

error ratio (BER) of 1×10-3

is 11.5 dB when 50-Gb/s

optical polarization-division-multiplexing quadrature

phase shift keying (PDM-QPSK) signal carried by one

of the generated subcarriers is coherent-detected.


PGC2012


Oral 3-1G-2

Invited Speaker

Fast Random Bit Generation Using

Oversampled Optical Chaos Xiao-Zhou Li, Sze-Chun Chan

City University of Hong Kong

Fast generation of random bits is crucial in

applications such as numerical modeling and secure

communication. Recently, generation techniques based

on laser chaos have been rapidly developed. One

attractive approach utilizes only a fractional bandwidth

of chaos from an optically injected semiconductor laser

in association with oversampling, which yields

generation at 30 Gbps. In this presentation, since entropy

fundamentally quantifies randomness, the entropies of

the bits from the oversampled chaos are deduced. It is

found that bit entropy as high as 0.998 is attainable,

which is higher than the practical requirement of 0.995

and is close to the ideal value of 1. In other words, the

approach is shown to effectively exploit the entropy of

the laser noise in realizing simple, high-speed, high-

quality, and bandwidth-efficient optical random bit

generation. The work described in this paper was fully

supported by a grant from City University of Hong Kong

(Project No. 7002726).

Oral 3-1G-3

Nested Silicon Microring Resonator with

Multiple Coupling Regimes Jiayang Wu, Zhiming Zhuang, Mu Xu, Pan Cao, Xinhong

Jiang, Linjie Zhou, Yikai Su


We propose and demonstrate a nested silicon

microring resonator that realizes multiple coupling

regimes at different resonance wavelengths in one

passive device. Resonance notches with diverse depths

and bandwidths in the transmission intensity spectrum

can be experimentally achieved, which demonstrates the

intensity responses of multiple coupling regimes.

Moreover, the phase responses of multiple coupling

regimes is also verified by observing fast or slow lights

at different resonance wavelengths.

Oral 3-1G-4

InSb1-xNx alloys on GaSb substrate by

MOCVD for long wavelength detection Yunjiang Jin, Dao Hua Zhang, Xiaohong Tang, Jinhua Teng


In this work, high quality InSbN alloys were hetero-

eptiaxially grown on GaSb (100) substrate by metal-

organic chemical vapor deposition, expecting large

nitrogen addition and long cut-off wavelength of the

samples simultaneously. Annealing treatment was

carried out to see the effect on the alloy properties.

Photoluminescence measurement indicated that the band

gap wavelength of the alloys is extended to 6.3 µm by

the N incorporation. Besides, another peak around 8.3

µm could also be detected, and the peak intensity is

comparable to the main band emission, which means

much for the application in long wavelength devices.

The mechanism of the defect emission was discussed

through the analysis of PL and XPS measurement results.

PGSC

Keynote Speaker

Surviving in Science: what they don’t tell you about careers in research! John Dudley,

CNRS FEMTO-ST

Obtaining a PhD is an important and significant

achievement in your life, but it is really only the start! A

successful career in research requires not only a PhD but

also many other skills in multiple areas: from an

appreciation of the broader aims of basic science, to

writing and communication, to management and

leadership. When starting out, the breadth of this

required expertise can seem daunting, but the aim of this

presentation will be to try to provide simple and

practical advice to help early-career researchers to build

and enjoy a long term career in photonics. Amongst

topics to be covered will be: networking; career options;

paper writing and conferences; ethics; transitioning from

student to postdoc to team leader; funding opportunities

etc.

PGSC

Keynote Speaker

Applications of Optical Fibers to

Healthcare and Biophotonics

Research

Gerd Keiser

PhotonicsComm Solutions, Inc. USA

Photonics technology is increasingly being used in

life sciences research and in biomedical diagnosis,

therapy, and surgery. This discipline is known as

biophotonics. The applications include medical imaging,

spectroscopy, endoscopy, tissue pathology, blood flow

monitoring, light therapy, and biosensing. Major

challenges include how to collect and transmit low-

power optical signals to a photon detector, how to

deliver a wide range of optical power levels to a tissue

area, and how to access a diagnostic or treatment area

within a living being with an optical probe in the least

invasive manner. The unique physical and light-

transmission properties of optical fibers are being

exploited to resolve such implementation issues. Various

types of optical fibers have different performance

characteristics and certain advantages and limitations for

specific uses in different spectral bands. This talk

describes how different optical fibers function and how

to select appropriate fibers for specific biophotonics

applications.


PGC2012


Oral 3-2A-1

Invited Speaker

III-V Nanowires Grown by

MOCVD for Optoelectronic

Applications Hark Hoe Tan

The Australian National University Nanowire research is a new and emerging field

growing at a fast pace due to the unique electronic and

optical properties of the nanowires. These properties

stem from their large surface to volume ratio, high

aspect ratio and confinement in two dimensions. These

nanowires are usually grown by the so-called vapour-

liquid-solid mechanism using catalysts or by selective

area growth.

In this talk, I will present an overview of the III-V

nanowire research at the The Australian National

University. The optical and structural properties of the

nanowires grown by MOCVD will be presented.

Various issues with such as tapering, compositional non-

uniformity along nanowires, crystal structure and carrier

lifetime will be discussed. I will also present our results

of III-V nanowires grown on Si substrates which are of

great interests for the integration applications. Finally,

some prototype nanowire device results such as lasers,

detectors and solar cells will be presented.

Oral 3-2A-2

Invited Speaker

Random Raman Lasing Vladislav Yakovlev

Texas A&M University

Lasing in a random medium is a fascinating

phenomenon, which originates from a seminal work by

Letokhov in 1960-s. Over the past decades, random

lasers have attracted a significant attention due to a

growing interest in new lasing media, fundamental

aspects of light scattering and remote diagnostics and

sensing. In this report, we will demonstrate the very first

experimental realization of a random Raman laser,

which utilizes Raman gain in a highly scattering medium

to achieve the threshold for stimulated emission.

Oral 3-2A-3

Semitransparent metal-free large area organic

solar module by spray Evan Lafalce, Patrick Toglia, Xiaomei Jiang

University of South Florida

Large area OPV have been demonstrated using

printing, spin-coating and laser scribing, and roller

painting. However, many of these methods still use

metal contact which hinders transparency of OPV. In

this talk, we report the fabrication and characterization

of semitransparent metal-free large area organic solar

module by all-spray process. The large area (4‖x4‖)

solar module consists of four layers on a glass substrate.

The encapsulated solar module shows more than 30%

transmission in the visible – near IR range. Solar

illumination has been demonstrated to improve device

efficiency up to 250%. Device efficiency of 1.80% was

observed with the array under AM1.5 irradiance [1]. Our

preliminary data have shown that the performance

enhancement under illumination only happens with

sprayed devices, not devices made by spin coating. This

means that solar cells made with our spray-on technique

performs better under sunlight, which is beneficial for

solar energy application.

Oral 3-2A-4

All-Polymer Electro-Optic Switch M. Balasubramanian, Rahul Singhal

BITS, PIlani

An Electro-optic switch based on Poly (3, 4-

ethylenedioxythiophene) - Poly (stryene sulfonate)

(PEDOT-PSS) Electrodes is designed and presented in

the paper. An easy-to-fabricate structure of single-mode

electro-optic (EO) polymeric waveguide switch based on

a Nonlinear Optical (NLO) Polymer is used and

analyzed. Electro-optically active waveguides are

designed in a photo-definable polymer SU-8 doped with

NLO chromophore tri-cyano-vinylidene-di-phenyl-

aminobenzene (TCVDPA).

Oral 3-2A-5

Ge-content Dependent Efficiency of Si/SiGe

Heterojunction Solar cell Mukul Kumar Das, Santosh Kumar Choudhary

Dept. of Electronics Engineering, Indian School of Mines,

Dhanbad, India

In this work we have developed a device model for

n-Si1-xGex/P-Si heterojunction solar cell considering the

effect of heterointerface carrier confinement. Model also

includes the effect of doping dependent mobility of

photogenerated carriers. Nonlinear variation of overall

efficiency of Si/SiGe solar cell with Ge-content (x) is

obtained. Efficiency initially increases nonlinearly with

increase in x and after a maximum value it decreases.

Maximum efficiency reaches nearly at x=0.15 which is

in good agreement with the experimental data. Similar

variation of efficiency but, without considering the

effect of carrier confinement is also studied where,

efficiency increases with increase in x initially at a

higher rate but for high values of x, rate of increment is

less.

Oral 3-2B-1

Invited Speaker

Mid-infrared silicon photonics

devices Goran Mashanovich, Milos Nedeljkovic, Milan

Milosevic, Marc Sorel, Thomas Krauss, Anna

Peacock, Harold Chong, Graham Reed


The mid-infrared wavelength region (3-20 µm)

offers several application areas. In this paper we present

silicon photonics devices designed for 3-4 µm including

rib, strip and PhC waveguides, MMIs, ring resonators,


PGC2012


and Mach-Zehnder interferometers. The devices are

based on silicon on insulator (SOI) platform. We show

that 400-500 nm high silicon waveguides can have the

propagation loss as low as ~ 4 dB/cm at 3.8 µm. We also

demonstrate MMIs with insertion loss of 0.2 dB, high

extinction ratio asymmetric Mach-Zehnder

interferometers, and SOI ring resonators. This, combined

with our previous results reported at 3.4 µm, confirms

that SOI is a viable platform for the 3-4 µm region.

Oral 3-2B-2

Invited Speaker

Applications of plasmonics in

silicon-based photonics Robert Kelsall

University of Leeds

The field of plasmonics has been regarded

enthusiastically as a means of shrinking photonic

structures and devices to nanoscale dimensions.

However, to be useful in practice, plasmonic devices and

components must be competitive with conventional

photonic technologies in terms of key performance

metrics, and should be amenable to integration on

photonic platforms using accepted processing

technologies. The focus of this presentation is the

development of plasmonic structures based on silicon-

on-insulator substrates and which use CMOS-compatible

processes and materials. Both active devices - electro-

optic and electroabsorption modulators - and passive

structures - plasmonic couplers and splitters - are

considered.

Oral 3-2B-3

Invited Speaker

High Contrast Long-Period

Waveguide Gratings on Silicon-on-

Insulator (SOI) Substrate Ricky W. Chuang, Guo-Shian Wang, Mao-

Teng Hsu

Institute of Microelectronics, Department of

Electrical Engineering, Advanced

Optoelectronic Technology Center, and Center

for Micro/Nano Science and Technology,

National Cheng Kung University, Taiwan

We report the practicality of fabricating the long-

period waveguide gratings (LPWGs) on silicon-on-

insulator (SOI) substrates with amorphous silicon (a-Si)

layer incorporated as a cladding layer. Specifically, the

devices are etched and patterned on SOI wafer via an

anisotropic wet etching technique, while the a-Si is

deposited using plasma-enhanced chemical vapor

deposition (PECVD) system. The experimental results

later confirm that the LPWG devices resonate within a

wavelength range between 1563 and 1580nm and the

LPWG waveguide with a width of 8μm has delivered a

dip contrast as high as 30 dB and the FWHM as narrow

as 1.76nm, as the input light is polarized as transverse

electric (TE) wave. With the transverse magnetic (TM)

polarized wave provided as an input, the LPWG

waveguide with the width of 10μm yields a dip contrast

as high as 14.5 dB and its FWHM measured is as narrow

as 1.32nm.

Oral 3-2B-4

Plasma activation assisted low-temperature

direct wafer bonding Hongyao Chua, Xianshu Luo, Wai Hong See Toh, Junfeng

Song, Tsung-Yang Liow, Mingbin Yu, Guo-Qiang Lo


As the only missing piece in silicon photonics, on-

chip optical light source becomes a hot research topic

recently. Various on-silicon light source including Si

Raman laser, Er-doped Si laser, and hybrid III/V-on-Si

laser have been demonstrated. Among them, the hybrid

Si laser which is realized via III/V-to-Si wafer bonding

is the most promising building blocks for on-chip light

source. In this paper, we report our latest activities of

low-temperature III/V-to-Si direct wafer bonding

assisted by chemical-mechanical polishing (CMP) and

plasma activation. Unlike UCSB‘s famous

demonstration, our silicon substrate is covered with a

controllable thickness of oxide cladding layer, in view of

practical hybrid integrated devices. Different types of

InP wafers and different bonding condition (with or

without pressure) were used to comparing the bonding

outcome. Both CSAM and sheer testing suggest high-

bonding quality.

Oral 3-2C-1

Invited Speaker

Slow-light enhanced

optomechanical interactions in

nano-beam waveguides Andrey Sukhorukov

Australian National University We demonstrate the optical forces between

suspended photonic-crystal nano-beams can be flexibly

controlled by breaking the structure and excitation

symmetry. We reveal that gradient optical forces

nontrivially depend on the longitudinal shift between the

waveguides. By varying the shift, we can tune of the

slow-light enhanced transverse force from repulse to

attractive, and the force is suppressed for a particular

shift value. The shift-induced symmetry breaking can

also facilitate longitudinal forces, in contrast to unshifted

structures where such forces vanish. We also show the

broadband slow-light regime can be realized with

several shifted nano-beam waveguides, enabling strong

enhancement of optical forces with high transmittivity in

a broad spectral region. Finally, we predict that

nonlinear self-induced oscillations can appear even at

the deep global minimum of effective optical potentials.


PGC2012


Oral 3-2C-2

Invited Speaker

Silicon Photonics Michal Lipson

Cornell University

Silicon is evolving as a versatile photonic platform

with multiple functionalities that can be seamlessly

integrated. The tool box is rich starting from the ability

to guide and amplify multiple wavelength sources at

GHz bandwidths, to optomechanical MEMS.

The strong confinement of light in ultra small

structures also enables the generation of strong optical

forces. We have recently shown that nonlinear optical

forces can enable controllable manipulation and

synchronization of photonic and micromechanical

structures. These advances should enable future micro-

optomechanical systems (MOMS) with novel and

distinct functionalities.

Another research area that recently has emerged is

nonlinear optics using silicon photonics. matching of

parametric nonlinear optical processes such as four-

wave-mixing (FWM) We demonstrated FWM-based

frequency conversion in waveguides using as little as 1

mW of pump power in a ring-resonator geometry, and

~100 mW of pump power over bandwidths exceeding

800 nm in a straight-waveguide device.

Oral 3-2C-3

Invited Speaker

Using nanoscale building blocks to

make electronic and photonic

devices Rosei Federico

INRS-EMT, Université du Québec

The bottom–up approach is considered a potential

alternative for low cost manufacturing of nanostructured

materials [1]. It is based on the concept of self–assembly

of nanostructures on a substrate, and is emerging as an

alternative paradigm for traditional top down fabrication

used in the semiconductor industry.

We demonstrate various strategies to control

nanostructure assembly (both organic and inorganic) at

the nanoscale. Depending on the specific material

system under investigation, we developed various

approaches, which led to a number of photonic devices

such as photodetectors, light-emitting transistors and

solar cells [2-4].

Oral 3-2C-4

Whispering Gallery Mode Excitation and

Collection using Fused-Tapered Fiber Tips Di Zhu, Yanyan Zhou, Xia Yu, Ping Shum, Feng Luan


In this paper, we investigated whispering gallery

mode (WGM) coupling in fused silica microspheres

using fused-tapered fiber tips (FTFT). FTFT couplers

are fabricated from single mode fibers using a standard

splicing machine. FDTD simulation is first performed to

demonstrate the feasibility of FTFT coupling to

spherical WGM resonators. Two separate experiments

are then conducted to characterize the performance of

the coupler: one experiment measures the reflected

signal from a single FTFT while the other adopts a two-

FTFT coupling scheme and measures the transmission

signal from a second FTFT. We obtained the comb-like

eigenfrequency spectrum from both schemes. The

measured free spectrum range (FSR) is around 2nm and

the Q-factor is in the order of 10e5.

Oral 3-2D-1

Invited Speaker

Calibration of a phase-shift formed

in a linearly chirped fiber Bragg

grating and its application to

environmental parameters sensor Hongpu Li

Shizuoka University

A novel scheme for quantitative calibration of a

phase-shift formed in a linearly chirped fiber Bragg

grating is numerically and experimentally demonstrated,

which is based on the utilization of a wavelength–

interrogated fiber ring laser. Due to the inherent

properties of the utilized fiber ring laser, such as the

ultra-narrow linewidth, high signal to noise ratio (SNR)

in terms of the lasing wavelength, the proposed method

may find potential applications to the measurements for

either the ambient refractive index, temperature, strain or

the transversal pressure with a high response.

Oral 3-2D-2

Invited Speaker

Researches of the Physical

Mechanics of CO2-Laser Written

Long-Period Fiber Gratings Yunqi Liu

Shanghai University

We demonstrate the fabrication of long-period fiber

gratings (LPFGs) written by CO2 laser in different

specialty fibers. The characteristics of grating growth

were studied by using the dynamic analysis of laser

writing process. In the experiments, the external tension

was applied in different fibers, especially the panda

polarization-maintaining (PM) fiber and the micro-

structure specialty fiber with random holes (bubbles) in

the cladding, when the laser beam was scanning across

the fiber. It is believed that the residual stress relaxation,

glass structure changes and frozen of the non-uniformed

external stress account for the formation of LPFG in

different fibers, respectively. Our results provide a better

understanding of the formation of LPFGs written by

CO2 laser.

The research was jointed supported by the National

Natural Science Foundation of China (61077065), the

New Century Excellent Talents in University, Ministry


PGC2012


of Education of China (NCET-10-0082), and the

Shanghai Shuguang Program (08SG40).

Oral 3-2D-3

Refractometer Based on Tilted Fiber Bragg

Grating Incorporating With Waist-Enlarged

Fusion Bitaper Jie Zheng, Xinyong Dong, Pengbing Hu, Shuqin Zhang,

Shangzhong Jin, Perry Ping Shum

Institute of Optoelectronic Technology, China Jiliang

University

A novel all-fiber refractometer based on a tilted fiber

Bragg grating (TFBG) incorporating with a waist-

enlarged fusion bitaper (WEFBT) is proposed and

experimentally demonstrated. The WEFBT is upstream

spliced with the TFBG thus coupling some of the

cladding modes launched by the TFBG into core mode

while the cladding modes excited by the WEFBT will be

combined backward into the core by the TFBG.

Surrounding refractive index (SRI) modulates the

signal‘s intensity when it propagates as cladding mode

and thus can be measured. Measurement range 1.358 to

1.448 has been achieved.

Oral 3-2D-4

Sensitivity of Horizontal Positioned FBG Sensor

in a Cylindrical FBG Load cell for Cable

Prestressing Monitoring Applications Vasagavijayan Sinivasagam

Product Specialist, Photronix Technologies (M) Sdn. Bhd.

A cylindrical shaped Fiber Bragg Grating (FBG)

load cell (FBG-LC) was designed and tested. The FBG

sensors were mounted inside the stainless steel housing

in two horizontal positions to determine the sensitivity

response of the FBG-LC to load or force applied. Force

sensitivity of 1.36KN/pm and 0.49KN/pm was obtained

from this design and capable of measuring a maximum

compressive load of 350KN. This FBG-LC can be used

to monitor the tension of a pre-stressed cable on a cable

stay bridge or pre-stressed tendons on concrete

structures.

Oral 3-2D-5

Implementation of Optical CDMA based on

Passive Optical Networks Tawfig Eltaif, Hesham Bakarman

Multimedia University

In this article, our aim is to investigate passive

optical networking (PON) based fiber access systems.

An overview of optical OCDMA and optical coding

through their features such as increasing the capacity,

security and improving the system performance were

presented. Modified prime code, which represents a user

address and signs each transmitted data bit has been

chosen as a signature sequence code because of its good

periodic auto/cross correlation properties. However,

simulation and theoretically analysis of balanced

detection scheme based on passive networking access

taking into account the effects of various noises such as

shot noise, phase-induced intensity noise (PIIN), thermal

noises were presented as well. Results of 25 subscribers

sent in C band for the upstream signal with channel

spacing 50 GHz show good system performance in

terms of the bit error rate and suppressing the multiple

access interference when variation of fiber length and

data rate are applied.

Oral 3-2D-6

Multi-Sensor Real-Time Sensing Based on Fiber

Grating Array Liwei Li, Xiaoke Yi, Tamal Shahriar Joy

School of Electrical and Information Engineering, Institute of

Photonics and Optical Science, University of Sydney,

Australia

A fiber optic sensor array with continuous and real-

time sensing capabilities is presented in the paper. The

structure includes reflective fiber Bragg gratings with

the same wavelength and optical bandwidth in

combination with a multi-output optical switch. By

turning on the multiple sensor heads sequentially with

the synchronization of data acquisition via

microcontroller and computer control, real-time

measurement and continuous monitoring can be

achieved. Experimental results are presented which

demonstrate a real-time temperature monitoring with the

compensation of the non-linear characteristic of the

optical edge filter.

Oral 3-2E-1

Invited Speaker

Enhanced light-matter interaction

in nanostructured disordered

materials RéMi Carminati

Institut Langevin, ESPCI ParisTech The interplay between multiple scattering, near-field

interactions and material resonances (surface plasmons)

in disordered scattering media leads to substantial

changes in the photonic properties, compare to that of

bulk materials. Changes in the local density of optical

states (LDOS) influence spontaneous emission as well as

absorption of light. We show that large Purcell factors

can be produced locally on disordered plasmonic films

as well as in purely dielectric scattering media. We

discuss the possibility of light localization in

subwavelength areas and the trade-off between radiative

and non-radiative energy transfer. Light scattering in

nanostructured disordered media suggests novel

approaches for the design of photonic materials with

specific properties.

Oral 3-2E-2

Invited Speaker

Photonic meta-atom of

independently controllable exotic

permittivity and permeability Namkyoo Park, Sukmo Koo, Daniel Mason

Photonic Systems Lab., Seoul National

University


PGC2012


In this talk, we propose a hypothetic meta-atom

which enables the design of the metamaterial from top-

down, for the desired response. Focusing on the two-

dimensional lossless photonic meta-atom of split radial-

angular permittivity, we show analytically the

decoupling of effective permittivity and permeability,

from which we inversely obtain the structure for a meta-

atom of target responses. In an application to EOT

(extraordinary optical transmission), we demonstrate the

super-funneling of a 50-lambda wide plane wave

through a sub-wavelength slit, breaking the fundamental

lambda-zone flux collection limit in EOT by two orders

of magnitude.

Oral 3-2E-3

Characterization of near field transducer for

high density heat assisted magnetic recording

combined with FePt recording media Sajid Hussian, Shawn Siew, Charanjit Bhatia, Hyunsoo Yang ,

Aaron Danner

ECE Department, National university of Singapore

We have conducted a thorough experimental

analysis of the use of nano-apertures as near field

transducers with FePt as a magnetic material in the near

field. C-shaped nano-apertures can be used an efficient

near field transducer (NFT) in heat assisted magnetic

recording (HAMR). As the recording medium in HAMR

recording is a magnetic material, the interaction of

optical fields with a NFT will be different compared to

the situation of a NFT in isolation. To the best of our

knowledge, this is the first study to explore the impact of

magnetic media proximity on optical characteristics of

NFTs experimentally. Different shaped nano-apertures

including ―C‖, ―I‖, and square having equal areas were

fabricated in a gold layer deposited on a SiO2. We have

compared the transmission characteristics of all nano-

apertures and have studied the localized plasmonics

effect causing high optical transmission in ―C‖•and

―I‖• shaped nano-apertures as compared to square.

Oral 3-2E-4

Controlling Light with Plasmon-plasmon

Interaction Yuriy Akimov, Hong Son Chu

Electronics and Photonics Department, Institute of High

Performance Computing

Recent advances in plasmonics have revealed the

great potential of surface plasmon polaritons maintained

by metallic nanostructures for diverse optical

applications ranging from subwavelength lithography

and super-lensing to biosensing and integrated

optoelectronic circuits. To date, a variety of methods has

been proposed to control the propagation of surface

plasmon polaritons, including thermo-optical, all-optical,

and electro-optical schemes. However, the most of them

suffer from low modulation/switching response or very

limited working regimes of the proposed devices. To

mitigate these constraints, we propose a fully plasmonic

electro-optical method based on the localized plasmon-

plasmon interaction supported by inhomogeneity of the

charge density distribution. We demonstrate that through

the electrically induced coupling of surface and bulk

plasmons one can efficiently modulate the surface

polaritons, providing new opportunities for active

plasmonics and related applications in terms of the

controlled light interactions with high switching and

modulation response.

Oral 3-2E-5

Nanoparticle Enhancement for Thin-Film

Silicon Solar Cells Yuriy Akimov, Wee Shing Koh

Electronics and Photonics Department, Institute of High

Performance Computing

Recently, thin-film solar cells enhanced with silver

nanoparticles have attracted much attention of the

scientific community. It has been shown that silver

nanoparticles can sufficiently improve light trapping in

subwavelength solar cells, the optical absorption of

which is low due to the small thickness of the photo-

active layer. Moreover, the cell spectral absorption can

easily be tuned by varying the size, shape, and mutual

arrangement of the nanoparticles, as their surface

plasmon resonances are particularly sensitive to the

geometrical configuration. To improve the light trapping

caused by incorporation of silver nanoparticles, we

perform a systematic study on the effect of the

nanoparticle geometric parameters on the optical

absorption of thin-film amorphous silicon solar cells.

Also, we investigate the stability of the enhancement

with respect to random deviations of the nanoparticle

parameters and demonstrate reproducibility of the

nanoparticle enhancement for amorphous silicon solar

cells.

Oral 3-2F-1

Invited Speaker

Nonlinear photonic circuits for

ultrafast signal processing:

Breaking the terabit per-second

barrier Benjamin Eggleton

University of Sydney

Oral 3-2F-2

Invited Speaker

Optomechanics and Frequency

Comb Generation in Optical

Microresonators Tobias J. Kippenberg

EPFL

Ultra high Q resonators exhibit both optical and

mechanical modes, which can be coupled via radiation

pressure. This coulpling can be exploited to achieve

cooling of the mechanical oscillator. We will describe

experiments in which the quantum coherent coupling

regime of mechanical systems in reached between an


PGC2012


optical cavity mode and a micromechanical oscillator.

This provide a route to quantum control of mechanical

oscillators. Time permitting we will also briefly review

the novel area of microresonator based frequency combs.

Oral 3-2F-3

Invited Speaker

Extreme events in nature,

randomness and rogue wave in

optics John Dudley, Benjamin Wetzel, Bertrand

Kibler, Christophe Finot, Guy Millot, Kamal

Hammani, Goery Genty, Frederic Dias

CNRS FEMTO-ST Recent work in nonlinear fiber optics has

demonstrated qualitative and quantitative links between

instabilities in optical propagation and the giant

destructive rogue or freak waves on the surface of the

ocean. The analogy between the appearance of

instabilities in optics and the rogue waves on the

oceanâ€™s surface is both intriguing and attractive, as it

opens up possibilities to explore the extreme value

dynamics in a convenient benchtop optical environment.

The purpose of this talk will be to discuss the results that

have been obtained in optics, and to consider both the

similarities and the differences with oceanic rogue wave

counterparts. The talk will review experimental work in

this field and will cover rogue waves in supercontinuum

generation, the formation of localized new classes of

soliton on finite background. New applications relating

to the generation of random numbers at arbitrary optical

wavelengths will also be discussed.

Oral 3-2G-1

Invited Speaker

Low-Power Transmitters for Green

Access Networks Elaine Wong

Uni of Melbourne

We discuss the use of energy-saving 10 Gbps

vertical-cavity surface-emitting lasers (VCSELs) as

optical network unit (ONU) transmitters in passive

optical networks. In particular, we review the features

and properties of the VCSEL that enable energy-savings

to be achieved. The power consumption per customer

using VCSEL-ONUs and DFB-ONUs, is compared

through an illustrative example of 10G passive optical

network for Video-on-Demand delivery. An impact

study of network and protocol parameters on the

achievable energy-savings of VCSEL-ONUs over DFB-

ONUs, is presented.

Oral 3-2G-2

Invited Speaker

Intersection of light and gold

nanoparticles for biomedical

applications Dakrong Pissuwan, Michael Cortie, Takuro

Niidome, Nicholas Smith

Biophotonics Laboratory, Immunology

Frontier Research Center, Osaka University Gold nanoparticles undergo a strong plasmon

resonance with light. The associated interaction has

significant potential for application in biomedical

technologies, both therapeutic and diagnostic. For

example, light sources matched with the light absorption

wavelengths of gold nanoparticles can be used to

generate localized heating for photothermal therapeutic

applications. We discuss how gold nanoparticles can be

used in this way as a ―golden bullet‖ to selectively target

infectious pathogens and also to break the skin barrier

for delivery of high molecular weight therapeutic agents.

Finally, an example of a diagnostic application of the

plasmon resonance is presented in which a Raman signal

is enhanced for the purpose of detecting the immune

responses in cells.

Oral 3-2G-3

Invited Speaker

Bioinspired Peptide Photonic

Nanomaterials Gil Rosenman

School of Electrical Engineering-Physical

Electronics, Tel Aviv University

The emerging "bottom-up" nanotechnology reveals a

new field of bioinspired nanomaterials composed from

chemically synthesized biomolecules. They are formed

from elementary constituents into supramolecular

structures by the use of developed by nature self

assembly mechanism. We report on quantum

confinement phenomena and direct observation of

quantum wells and quantum dots self assembled

structures at various bioinspired and biological

nanostructural materials. The observed exceptional

optical absorption properties and strong exciton

photoluminescence at room temperature originate from

nanoscale size of elementary building blocks of these

supramolecular structures. We show that supramolecular

origin of these bioinspired nanomaterials provide unique

chance to be dissembled into elementary building blocks

peptide nanodots of 1-2 nm size possessing unique

electron and optical properties. These multifunctional

nanounits are the basis for a new future step in

nanotechnology and nanoscale advanced nanophotonics

devices bio-LEDs, bio-Lasers, new technique for early

diagnosis of neurodegenerative diseases.

Oral 3-2G-4

All-Semiconductor Laser based Wind Lidar Peter John Rodrigo, Christian Pedersen

DTU Fotonik, Department of Photonics Engineering,

Technical University of Denmark


PGC2012


Since 1970s, coherent laser radars (Lidars) have

been restricted as scientific instruments due to costly and

meticulous light source requirements – preventing their

practical industrial applications. In wind-turbine control,

recent studies show that anemometric Lidars may boost

power-production by more than 10%. However,

widespread enhancement to this green-energy requires

compact, cost-efficient, mass-producible Lidar sensors.

To address this demand, we demonstrate a low-cost all-

semiconductor laser (SL) wind Lidar, which represents

state-of-the-art Lidars suitable for industrial purposes. In

2000, researchers considered SL-based wind Lidars but

highlighted several problems associated with SL sources,

which consequently diverted research-and-development

efforts towards Lidars employing high-quality, but

expensive fiber-laser-fiber-amplifier (FLFA) sources.

Since 2006, we have focused our attention on addressing

these challenges. Here, we present a chip-integrated

master-oscillator-power-amplifier SL wind Lidar that

overcomes the aforementioned problems and

experimentally demonstrate that our SL-Lidar can match

the reliability and performance of its expensive

commercial FLFA-based counterparts.

Oral 3-2G-5

Photocatalytic water purification using planar

microreactor Ning Wang, Furui Tan, Xuming Zhang

Department of Applied Physics, Hong Kong Polytechnic

University

In our studies, we have found that the optofluidics

technology enables fine flow control, direct photon

delivery and versatile reactor design and can solve

several problems of photocatalysis such as mass transfer

limit, photon transfer limit, electron/hole recombination,

visible light response, oxygen deficiency and long-term

stability. More specifically, we utilize a planar

microreactor design to achieve large surface-area-to-

volume ratio, self-refreshing of the reaction surface and

large photon receiving area; we mount a LED on top of

the reaction chamber to ensure uniform irradiation of the

reaction surface and almost 100% photon utilization

efficiency; we employ BiVO4/TiO4 heterojunction

photocatalyst film to absorb both the UV and the visible

light of the sunlight and to separate the photo-excited

electrons/holes; and we apply a bias potential to

selective control the oxidation pathways, to supply

oxygen by electrolysis and to exert the synergetic effect

of photocatalysis and electrocatalysis.


Advances in ultrafast oscillators and amplifiers

for spectroscopy and microscopy applications Philippe Feru

Coherent

Titanium Sapphire ultrafast oscillators and amplifiers

are able to provide the shortest pulses directly available

from a laser source. In addition, the unparalleled

versatility of this active medium enables tunability over

a larger wavelength range than any other laser material

and capability to produce multi-millijoule femtosecond

pulses at repetition rates of several kHz. The availability

of laser sources spanning these operating ranges makes

possible sophisticated applications like multiphoton

microscopy, attosecond physics and multidimensional

spectroscopy. The extreme sophistication of these

applications translates into complex experimental set-

ups, requiring at the same time state-of-the-art laser

performance with minimal maintenance. In this

presentation we describe how Coherent ultrafast lasers

meet this double challenge.


Field Tracing with VirtualLab™: Optical

Modeling Beyond Ray Tracing Christian Hellmann

LightTrans GmbH

Modern optical systems may contain a large variety

of optical components as for example refractive,

diffractive, hybrid, Fresnel and GRIN lenses, diffractive

optical elements, diffusers, beam shapers, diffractive

beam splitters, computer generated holograms, phase

plates, gratings, elements with free form surfaces and

micro lens arrays. In addition light sources with different

properties as for example degree of coherence, color and

polarization can be used. Nowadays there exists no

single modeling technique that allows the complete

analysis of such systems which combine conventional

optical components with micro- and nanostructured

components. Ray tracing is fast but is not accurate

enough for the simulation of most micro- and

nanostructured components. Rigorous solvers of

Maxwell's equations like finite element methods (FEM)

enable the modeling of all components in general, but

for system simulation they require far too much

computer resources even in face of recent computer

technology developments. Besides this technical

limitation it is not reasonable to apply a Maxwell solver

for propagating, for instance, a laser beam through a lens

also from a principal point of view. It is much more

efficient and accurate enough to select suitable modeling

techniques for different components of a system, e.g.

geometrical optics for propagating a laser beam through

a lens, the Rayleigh Sommerfeld integral to obtain the

beam in the focus of the lens and FEM to model the

scattering of the focused beam at some microstructure.

In modern optics we have a great variety of such

situations. In all of them a smooth combination of

diverse modeling techniques is demanded. A unified

optical modeling approach is required. Field tracing is

introduced to tackle this challenge.

We present the basic idea of field tracing and

illustrate some of the benefits by examples. The

applications are presented with the optics software

VirtualLab™, which is the first field tracer on the

market. We briefly describe the way to apply field

tracing by VirtualLab™ and for example how to get

maximum benefit of field tracing by combining existing


PGC2012


VirtualLab™ features with customer originated modules

in C# and MATLAB®.


Supercontinuum sources and interfaces for Bio-

Imaging Chuong Tran

NKT Photonics A/S

Supercontinuum sources have for some year been

used for fluorescent microscopy because the emission

wavelength can be freely chosen. This has also led to the

desire to use Supercontinuum sources for other

fluorescent techniques, such as for example,

fluorescence-lifetime imaging microscopy (FLIM),

STED and confocal microscopy Such techniques create

new requirements for the light sources: As the

fluorescence lifetime measurements are often based on

highly sensitive time correlated single photon counting

(TCSPC) methods, out of band suppression, pulse shape

and triggers quality have become very important

parameters. Research on for example quantum dots with

long fluorescent lifetimes, has furthermore led to the

need for low repetition rate sources. Finally, overall

instrument complexity is escalating and any

improvements that can be made in terms of ―ease of use‖

will make the user much more likely to succeed. NKT

Photonics has introduced a new Supercontinuum

platform, where these requirements have been addressed,

through a flexible array options and accessories. This

talk will focus on how these options can be used, and on

some of the results that has already been demonstrated.

Oral 3-3A-1

Invited Speaker

Synthesis of Homogenous Tungsten

Bronze Nanomaterials with

Excellent Muti-functionality by a

Water Controlled-Release

Solvothermal Process Shu Yin

IMRAM, Tohoku Univ.

Tungsten bronzes are non-stoichiometric compounds

with general formula of MxWO3 (0<x<1), where M can

be a wide range of cations including protons (H+),

alkali(Li, Na, K, Rb, Cs) or alkaline earth metals (Mg,

Ca, Sr, Ba), NH+, trivalention (La, In), and so on. The

cation occupancy also determines the electronic and

magnetic properties of the bronzes; WO3 is an insulator

because all the tungsten is in the form of W6+

having no

valence electrons, while the bronzes, with a mixure of

W+6

and W+5

can be metallic. In the present talk, the

synthesis, structure, and the physic-chemical properties

of the tungsten bronze (MxWO3, M=Na,K,Cs), which

possessed excellent NIR shielding properties and some

novel muti-functionality will be introduced.

Oral 3-3A-2

Invited Speaker

High Speed Optical Device

Simulation Soon Thor Lim , Ching Eng Png , Vivek Dixit

IHPC, Singapore

Silicon-based electro-optic modulators are essential

to reduce the cost of optical communication systems.

Presently, there is no computational technique available

to predict the optical eye diagram of such modulators.

We present a new way to analyze the modulation of

optical signals in the MZI configuration with active

field-effect modulators to predict its optical eye diagram

with unprecedented accuracy and reliability, previously

achievable only through elaborate measurements. Based

on the knowledge of the electrical and optical

characteristics of the modulator components, the optical

eye diagram patterns are computed by multi-level multi-

physics simulation. Critical high-speed characteristics

are captured from electrical simulation and fed into the

optical domain to model the corresponding optical

response such as loss and phase change induced by each

modulator with respect to time. The method has been

rigorously validated against experimental results

obtained by testing and measuring silicon MZIs at

10Gbps, 40Gbps, and 50Gps.

Oral 3-3A-3

Metal-assisted photonic mode for ultrasmall

bending with long sub-wavelength propagation

length Chengyuan Yang, Ee Jin Teo, Tian Goh, Siew Lang Teo,

Jinghua Teng, Andrew Bettiol

Nationnal University of Singapore

Plasmonic waveguide is a promising route to achieve

miniaturization of conventional optical elements. It

offers a solution to make nanoscale photonic devices.

Here, we present a polymer loaded surface plasmon

polariton (SPP) waveguide. Such waveguides have a

strong-mode confinement within the dielectric stripe,

making them suitable for the development of compact

plasmonic device. Moreover, the experiment shows that

the optical properties such as propagation length can be

artificially modified by doping suitable materials. It

provides a simple way for active plasmonics. The

characterization method is leakage radiation microscopy.

Oral 3-3A-4

Research on picosecond passively Q-switched

microchip laser Takuya Inoue, Toshiki Koike, Kazuyoku Tei, Shigeru

Yamaguchi, Jun Enokidani, Shin Sumida

Tokai University

Compact and simple pico second lasers are required

in many applications like fine material processing. we

have been developing a pulsed fiber laser which use a


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fiber amplifier system and a passively Q-switched

microchip laser as a seed source. In this presentation, we

report the test results of the passively Q-switched

microchip laser.

The pump source is a diode laser coupled to single

mode fiber with the wavelength of 808 nm and the

maximum power of 220 mW. The microchip is

composed of a combination of gain medium and a

saturable absorber. The gain medium is Nd:YVO4

crystal with 3 % doping, and thickness is 100 Î¼m. As a

result, We obtained 10 mW laser output power with 90

ps pulse width, 3 MHz repetition rate, and single

longitudinal mode operation with simple setup.

Oral 3-3A-5

Optical Response of Si/Ge superlattices with

embedded Ge dots Seref Kalem, Orjan Arthursson, Peter Werner

TUBITAK-BILGEM National Research Institute of

Electronics

A method was provided for treating the optical

response of Si/Ge superlattices (SL) with embedded Ge

dots. Spectroscopic ellipsometry (SE) measurement at

room temperature was used to investigate optical and

electronic properties of Si/Ge SL which were grown on

silicon (Si) wafers having <111> crystallographic

orientation. The results of the SE analysis between 1.2

eV and 5.2 eV indicate that the SL system can

effectively be described using interdiffusion/intermixing

model by assuming a multicrystalline Si and Si1-xGex

intermixing layers. The optical transitions exhibit Si, Ge

and alloying related critical points.

Oral 3-3C-1

Invited Speaker

High performance carrier depletion

based silicon optical modulators Dave Thomson


In this work various results from high performance

carrier depletion based silicon optical modulators are

presented. Two different designs of conventional phase

modulators incorporated into Mach Zehnder (MZ)

Interferometer structures are featured. High speed

modulation is observed at 40Gbit/s and 50Gbit/s from

designs in 400nm and 220nm overlayer SOI respectively.

Analysis of the chirp produced from plasma dispersion

MZ based silicon optical modulators is also performed.

A ring resonator based optical modulator also operating

at 40Gbit/s and featuring FIB error correction is

presented. Further to this slow light enhancement of the

modulation effect is demonstrated through the use of a

corrugated waveguide structure. 40Gbit/s modulation is

again achieved in this structure. Finally an integrated

transmitter featuring a III-V source and MZI modulator

operating at 10Gbit/s is presented.

Oral 3-3C-2

Ge/Si Avalanche Photodetectors with High

Gain-Bandwidth Product Ning Duan


We report a Ge/Si avalanche photodiode (APD)

featuring separate-absorption-charge-multiplication

(SACM) structure using CMOS-compatible process

technology. The impact of charge layer doping

concentration on device performance is studied. By

proper design of device structure to eliminate

germanium impact ionization at high gain, the APD

device achieves high 3-dB bandwidth of ~8 GHz at gain

~39, giving rise to a resulting 300GHz gain-bandwidth

product. These APD devices can be monolithically

integrated with other silicon photonics components on Si

SOI substrates.

Oral 3-3C-3

Bit-Error Rate Analysis of Integrated

Optoelectronic Receiver Jin-Sung Youn

Yonsei University

In this paper, we investigate a bit-error rate (BER) of

an optoelectronic integrated circuit (OEIC) receiver. For

this investigation, signal and noise characteristics of a Si

avalanche photodetector and a high-speed electronic

circuit are analyzed. Using the fabricated OEIC receiver,

12.5-Gb/s 231-1 pseudo-random binary sequence optical

signal is successfully detected with BER less than 10-12

at incident optical power of -7 dBm.

Oral 3-3C-4

Performance Optimization of Waveguided

Germanium pin Photodetector for Optical

Communication Applications Andy Lim


High performance Ge photodetectors are important

for high speed optical integrated receivers. This work

looks at contact engineering to optimize detector

performance in wave-guided Ge vertical pin

photodetectors. A systematic study was done to show

the impact of top contact and n++ implant design and

placement are important in reducing optical absorption

by the top metal electrode, decrease the photodetector‘s

dark current, and improve bandwidth.

Oral 3-3C-5

Invited Speaker

Low-loss silicon Mach-Zehnder

modulators for high-speed optical

fibre telecommunications Kensuke Ogawa

Fujikura Ltd.

Mach-Zehnder (MZ) modulators are promising for

high-speed optical-fibre telecommunications. Silicon

MZ modulators are widely interested because of their


PGC2012


potential in small footprints for integration and low costs

for fabrication. It is crucial to reduce optical loss in Si

MZ modulators for error-free transmission in long-haul

optical-fibre networks. A low-loss rib waveguide with

optimised side slab thickness and dopant profile has

been designed for a high-speed phase shifter. The phase

shifter optical loss per unit length of the fabricated Si

MZ waveguides is 0.8dB/mm or lower in C+L band

including free-carrier optical absorption. Error-free

transmission up to 80 km in 10.7-Gb/s on-off keying

format is demonstrated in bit error rate characterisation

for the Si MZ modulator with total optical loss lower

than 11 dB. Error-free performance is also confirmed in

20-Gb/s binary phase-shift keying format with bit error

rates as low as those for a commercialised lithium

niobate MZ modulator.

Oral 3-3D-1

Invited Speaker

Microfiber Bragg Grating:

Fabrication and Application to

Refractive Index Sensing Bai-Ou Guan

Jinan University

Fiber Bragg grating (FBG) is one of the most

important photonic sensing elements that have been

widely used in civil engineering, oil & gas, railway,

aerospace, and other fields. Up to now, FBG sensors are

mainly used to detect physical parameters and seldom

used in biological and chemical sensing. This is because

the FBG couples light from the forward core mode to the

backward core mode and has no interaction with the

surrounding. Recently, microfiber has attracted great

attention for biological and chemical sensing because of

its large evanescent field which provides strong

interaction with the surrounding. The combination of

microfiber and FBG provides a promising platform for

biological and chemical sensing. In this paper, we

briefly review our recent work on fabrication of FBG in

microfiber and its refractive index sensing applications.

Oral 3-3D-2

Invited Speaker

Optical fiber gratings written in

Microstructured optical fibers Yiping Wang

Shenzhen University

This paper presents the fabrication methods and

applications of optical fiber gratings written in both

solid-core PCFs and air-core PBGs. A stain sensor with

a high-sensitivity was demonstrated by use of a long

period fiber gratings (LPFGs) written in solid-core PCFs.

Such a strain sensor has low temperature sensitivity and

therefore can effectively reduce the cross-sensitivity

between strain and temperature. An in-fiber polarizer

based on a LPFG is fabricated by use of a focused CO2

laser beam to notch periodically on a PCF. Such a

polarizer exhibits a high polarization extinction ratio of

more than 20dB. A novel LPFG was written in air-core

photonic bandgap fibers by use of a CO2 laser

periodically collapse air holes in the fiber cladding.

Moreover, this paper also report fiber Bragg gratings

written in small-core Ge-doped or pure-solid photonic

crystal fibers with a two-beam interference technique

employing an excimer or femtosecond laser.

Oral 3-3D-3

Etched Singlemode Polymer Fiber Bragg

Gratings for High Sensitivity Tensile Force

Measurements Ginu Rajan, Bing Liu, Yanhua Luo, Eliathamby Ambikairajah

The University of New South Wales

Singlemode polymer fiber Bragg gratings (FBG)

are etched up to a thickness of 30 µm to be used for high

sensitivity tensile force measurements. The singlemode

polymer fiber and the gratings are fabricated using the

in-house fabrication facility. The fabricated cladding

etched polymer FBGs are characterized for low value

tensile force measurements and the sensitivity of the

sensors are measured and compared with the

theoretically estimated values. A sensitivity of 643 nm/N

is obtained for the polymer Bragg grating with a

diameter of 30 µm. Given the bio-compatible nature of

polymer fibers, such high sensitivity force sensors can

found applications in bio-medical field where high

sensitivity low value force/pressure measurements are

required

Oral 3-3D-5

Optical twisting alert sensor based on PM-EDF

short cavity DBR laser Xuan Quyen Dinh, Meng Jiang, Perry Ping Shum, Zhifang Wu

CINTRA CNRS/NTU/THALES

We report an optical twisting alert sensor using beat

frequency from a short cavity polarization-maintaining

erbium-doped fiber (PM-EDF) based distributed Bragg

reflector (DBR) laser. A DBR fiber laser with an

effective cavity length of ~ 1 cm formed by a pair of

fiber Bragg gratings (FBGs) inscribed on a portion of

PM-EDF was developed for demonstrated. This fiber

laser exhibited stable operation in dual-polarization

single-longitudinal-mode. The amplitude of the beat

frequency generated by two orthogonal polarizations of

the cavity is twist dependence. It is shown that the beat

frequency signal can be completely ―turned off‖•at ~

180° twist angle. This type of single mode DBR fiber

laser can be used as optical twisting alert sensors for

remotely interrogated systems and multi-parameter

monitoring systems.


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Oral 3-3E-1

Invited Speaker

Plasmonic resonance enhanced light

absorption in metallic

nanostructures Min Qiu

Zhejiang University

Light absorption can be significantly enhanced

through plasmonic resonances in optical metamaterials

and other plasmonic nanostructures. In this talk, we

review our recent work on high performance

metamaterial absorbers at near infrared wavelength. The

nanostructures in metamaterials can be either one-

dimensional gratings or two-dimensional nanoparticles

arrays. The absorbers can be designed to be highly

polarization sensitive or insensitive, as shown in our

experiments. The absorption peak wavelength can be

tuned by many methods, while the bandwidth of

absorption can also be manipulated to be either

broadband or narrow-band. Furthermore, the heat

generated by the light absorption, i.e., the photothermal

effect, can be utilized to fabricate micro- or nano-

metallic structures, or manipulate nanoparticles. The

collective heating effects of nanoparticle clusters can

even provide applications in, e.g., nanoscale rulers.

Oral 3-3E-3

Invited Speaker

Single-Particle Plasmon-Resonance

Spectroscopy of Nanoscale Phase-

Transition in Vanadium Dioxide Dang Yuan Lei, Kannatassen Appavoo,

Yannick Sonnefraud, Richard Haglund , Stefan

Maier

The Hong Kong Polytechnic University A novel spectroscopic technique based on single-

particle plasmon-resonance is developed and used to

study the metal-to-insulator phase-transition of

vanadium dioxide (VO2) - a prototypical correlated

electron material - on the nanoscale. On the one hand, by

combining this plasmon resonance nanospectroscopy

technique with first-principles density functional

calculations, we correlate the decreased phase-transition

energy observed in multi-domain VO2 nanoparticles

(NPs) with oxygen vacancies created by the strain at

grain boundaries. On the other hand, two characteristics

responsible for the Mott transition are observed

indirectly by monitoring the plasmon response variation

of individual Au nanoparticles deposited on a thin VO2

film when thermally cycling through the metal-to-

insulator transition of VO2. This nanospectroscopy

technique can thus be used for nanomaterials studies

with simultaneous nanoscale spatial resolution and

ultrasensitive spectroscopic characterization.

Oral 3-3E-4

Vandium Dioxide Active Plasmonics Kelvin J. A. Ooi, Ping Bai, Hong Son Chu, Lay Kee Ang


The insulator-metal transition (IMT) property of

vanadium dioxide provides a large, abrupt change in

refractive index, making it a good candidate active

material for optical modulators. We show, in this paper,

that plasmonic modulators can leverage the high

modulation contrast of vanadium dioxide, while at the

same time solve the problems of high insertion loss and

high phase-transition electric-field threshold faced by

vanadium dioxide photonic modulators. Our simulation

results show that vanadium dioxide plasmonic slot and

hybrid-slot waveguide modulators can achieve

extinction ratios in excess of 10dB/µm with insertion

losses as low as 2dB/µm. We also show that vanadium

dioxide can be used to build plasmonic ring modulators.

These high performance modulators are foundations to

realizing plasmonic nanocircuits for next-generation

chip technology.

Oral 3-3F-2

Invited Speaker

New Effects at Cavity Lengthening

of an All-Fiber Dissipative-Soliton

Oscillator Sergey A. Babin, Denis S. Kharenko, Evgeniy

V. Podivilov, Alexander A. Apolonski

Institute of Automation and Electrometry, SB

RAS, Novosibirsk It is known that dissipative solitons (DS) generated

in fiber oscillators lose their stability at cavity

lengthening. We report on the experimental realization

of the DS oscillator with increased cavity length (L~100

m). Stable operation is achieved in the all-fiber

configuration consisting of a short single-mode-fiber

(providing mode locking via nonlinear polarization

evolution) and a long PM-fiber (providing formation of

highly-chirped DSs) parts. We have identified the next

limiting effect related to the onset of Raman conversion

of the DS spectrum. The maximum output energy

obtained with 5.5-µm-core PM-fiber amounts to ~30 nJ

in 30-70 ps pulses externally dechirped to 200-300 fs at

repetition rate ~1.7 MHz. At that, the Stokes pulse

reaching comparable energy inside the cavity does not

break the soliton stability, surprisingly. The obtained

results are analyzed using a simple model. Higher DS

energy is shown to be possible by means of a PM fiber

core enlargement.

Oral 3-3F-3

Invited Speaker

High-energy fiber lasers in the

dissipative system Xueming Liu

Xi‘an Institute of Optics and Precision

Mechanics

The accumulation of excessive nonlinear phase shift

or excessive pulse chirp often causes the pulse to break

up and hence presents a fundamental challenge to the

development of high-energy fiber lasers. We have

proposed a passively mode-locked all-fiber laser with


PGC2012


large positive and negative dispersions. The pulses in the

proposed laser system have to encounter significant

amounts of dispersion (both positive and negative) and

suffer large loss (and gain). The strongly dissipative and

dispersive mechanisms will determine on the pulse

formation. The pulses of this laser have very low

frequency chirp and exhibit as the quasi-rectangle

temporal and Gaussian spectral profiles, as well as the

spectral width is almost independent of the pumping

strength. Both numerical and experimental results show

that pulse energies 1 to 2 orders of magnitude larger than

those of existing lasers should be possible.

Oral 3-3F-4

Observation of Soliton Intermittency in a Fiber

Laser Xuan Wu, Ping Shum, Dingyuan Tang

Nanyang Technological University, EEE

We report on the first experimental observation of

soliton intermittent dynamics in a passively mode-

locked fiber laser. We show that under appropriate

experimental conditions, the dissipative solitons formed

in a mode-locked fiber laser do not exhibit uniform pulse

train with equal intensity any more, but behavior as the

regularly pulsing of the intensity interrupted by the

bursts of larger peaks, which resemble the features of

intermittency observed in the nonlinear dynamic systems.

It is also revealed that the average duration of the pulse

bursts decreases with the pump power enhancement or

orientations of waveplates. As the intermittency and

route to chaos are typical features of the nonlinear

dynamic systems, our result confirms further that the

soliton propagation in the laser cavity itself is a

nonlinear dynamic process.

Oral 3-3F-5

Low-noise passively mode-locked fiber laser

with linear cavity Kan Wu, Ping Shum


We report a compact all fiber low-noise laser mode

locked by semiconductor saturable absorber (SESAM).

The laser has a repetition rate of 800 MHz and a timing

jitter of 75 fs (1 kHz - 1 MHz).

Oral 3-3G-1

Invited Speaker

High gain Properties of Highly

Stacked Quantum Dot Fabricated

by a Strain-Compensation

Technique Kouichi Akahane, Naokatsu Yamamoto,

Tetsuya Kawanishi

National Institute of Information and

Communications Technology

The self-assembled semiconductor QDs can be used

for high performance gain medium in the application of

laser diode and semiconductor optical amplifier (SOA).

Especially, QDs SOAs are expected to be used in high

performance optical switches with particular properties

such as high speed response, no pattern effects, small

size, and polarization independence. Although the

increase of the QD density is important, it is difficult to

obtain high density self-assembled QDs because the

accumulation of strain energy in the stacking process

generate defects and dislocations. To overcome this

problem, we have developed a growth technique that

increases the number of stacked QD layers by using a

strain-compensation method. In this paper, we show how

to fabricate ultra-high density QDs structure, and its high

gain properties. We successfully stacked 300 InAs QD

layers without degradation of the QD quality and obtain

high gain of 50 cm-1 even at low excitation density.

Oral 3-3G-2

Invited Speaker

Recent progress in development of

quantum dot devices for optical

interconnects Yu Tanaka, Mitsuru Sugawara, Arakawa

Yasuhiko

Fujitsu Laboratories LTD

For optical interconnects applied to future high

performance computers and/or high-end servers, it is

very important to develop small footprint, high efficient,

and temperature insensitive optical active devices since

such devices need to be located densely on a system

board where the environmental temperature varies

drastically. It is well known that quantum dot (QD)

devices have unique properties due to three dimensional

carrier confinements inside QDs, showing distinguished

optical characteristics such as low operating power and

temperature insensitivity. Therefore QD optical devices

have been expected as one of the promising candidates

to meet the above-mentioned requirements. In this

presentation, recent progress in the development of QD

based optical devices will be reported toward the

application for future optical interconnection. Excellent

performances of the temperature stable QD lasers and

QD semiconductor optical amplifiers will be introduced.

Oral 3-3G-3

Invited Speaker

A Transformable Hybrid Packet

and Circuit Switching Network

Node Weiqiang Sun, Weisheng Hu

State Key Laboratory of Advanced Optical

Communication Systems and Networks,

Shanghai Jiao Tong University, China Optical packet switching remains an attractive

switching paradigm in the long run, however, till today,

technical challenges prohibit it from becoming a

practical solution for the ever-growing bandwidth

hunger. Finding a technically viable way to meet the

increasing capacity requirement with good scalability

and flexibility becomes a clear pursue for the

community. Hybrid packet and circuit switching is

considered to be one promising technique in realizing


PGC2012


high performance switching at low cost, efficient energy

consumption and high performance, by taking advantage

of both packet switching and circuit switching. In this

paper, we review existing work in hybrid optical packet

and circuit switching, and further introduce our ongoing

efforts in building a seamlessly transformable

packet/circuit-switching node with hybrid optical and

electronic components. The implemented node is

believed to be a good research testbed for packet/circuit-

switching co-existence in a single node.

Oral 3-3G-4

Performance of Reconfigurable Free-Space

Card-to-Card Optical Interconnects under

Atmospheric Turbulence Ke Wang, Ampalavanapillai Nirmalathas, Christina Lim,

Efstratios Skafidas, Kamal Alameh

NICTA-VRL, The University of Melbourne

Free-space based card-to-card optical interconnects

are promising candidates for the provision of parallel

high-speed and reconfigurable interconnectivity in data-

centers and high-performance computing clusters.

However, the atmospheric turbulence may degrade the

interconnect performance due to the beam wander,

signal scintillation, and beam broadening effects. In this

paper, the experimental investigation of the impact of

both moderate and comparatively strong atmospheric

turbulence on the bit-error-rate (BER) performance of

our proposed reconfigurable free-space card-to-card

optical interconnects is presented. Experimental results

show that the BER performance does suffer power

penalties of ~0.5 dB and ~1.6 dB at BER of 10-9 under

moderate and strong levels of turbulence respectively.

Oral 3-4A-1

Invited Speaker

New optical bio-sensor from DNA

and nano structures Ai Viet Nguyen, Anh D. Phan

Institute of Physics, 10 Daotan, Badinh, Hanoi,

Vietnam

Heller et. al (2006)) demonstrated the first DNA-CN

optical sensor by wrapping a piece of double-stranded

DNA around the surface of single-walled carbon

nanotubes (CN). This new type of optical device can be

placed inside living cells and detect trace amounts of

harmful contaminants by means of near infrared light. In

this report, we investigate the working principle, design

schemes and the role of surrounding environment of this

new class of optical biosensor from DNA and carbon

nano structures, such as carbon naotubes, graphene

ribbons, etc. We also propose some new design models

by replacing carbon nanotubes with graphene ribbon

semiconductors.

Oral 3-4A-2

Invited Speaker

Tunneling of Light in Gradient

Dielectric Nanostructures: from

Paradoxes to Devices A.B.Shvartsburg, O.D.Volpian

Joint Institute for High Temperatures Russian

Academy of Science, Moscow, Russia Heller et. al (2006)) demonstrated the first DNA-CN

optical sensor by wrapping a piece of double-stranded

DNA around the surface of single-walled carbon

nanotubes (CN). This new type of optical device can be

placed inside living cells and detect trace amounts of

harmful contaminants by means of near infrared light. In

this report, we investigate the working principle, design

schemes and the role of surrounding environment of this

new class of optical biosensor from DNA and carbon

nano structures, such as carbon naotubes, graphene

ribbons, etc. We also propose some new design models

by replacing carbon nanotubes with graphene ribbon

semiconductors.

Oral 3-4A-3

Study of Phase Conjugated wave in DASPB dye-

doped polymer films Shubhrajyotsna Aithal, Sreeramana Aithal

Srinivas College

Optical phase conjugation through degenerate four-

wave mixing is observed in 4-[4-

(Dimethylamino)styryl]-1- docosyl pyridinium bromide

(DASPB) dye-doped in Polymethyl methacrylate –

metacrylic acid (PMMA-MA) polymer films under low-

power, continuous-wave laser irradiation. A maximum

phase conjugate efficiency of 0.42% has been obtained

for probe beam intensity at 2.5 W/cm2. Phase

conjugation is observed for both parallel- and

orthogonally-polarized probe and pump beams. The

maximum PC reflectivity is achieved when the angle

between probe beam and forward pump beam is 8

degrees. The effects of dye concentration, inter beam

angle between probe and forward pump beam on phase

conjugation reflectivity are also studied. PC signal

strength first increases and then decreases with time. PC

reflectivity is also increased by increasing the intensity

of the backward and forward pump beam. The

polarization and intensity profile are verified to be

preserved in the conjugate signal. The predominant

phase conjugation signal is attributed to the fact that

saturable absorption and two photon induced florescence

property of the dye molecules.

Oral 3-4A-4

Precision determinations of laser radiation

coherence by digital processing of their

interferograms Eugene Tikhonov

Institute of Physics NAsci Ukraine

The method of digital processing of continuous laser

radiation interferograms by the digital microscope and


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original two-beam interferometer with the phase

diffraction Bragg grating as the amplitude beam splitter

for a quantitative determination of the spatial and

temporary coherence module of radiation is described.

The numerical processing of the interferogram images

was carried out with software algorithms of OriginPro85.

Principles and functionality of a measurement

procedures are shown on measuring of the radiation

coherence of several gas, solid-state and diode lasers.

Oral 3-4A-5

Optical frequency comb generation by cascaded

second-order nonlinear effect in a quasi-phase

matched micro-ring resonator Zi-Jian Wu, Yang Ming, Fei Xu, Yan-Qing Lu

National Laboratory of Solid State Microstructures and

College of Engineering and Applied Sciences, Nanjing

University

We propose optical frequency comb generation in a

monolithic micro-ring resonator. Being different from

the previously reported nonlinear optical frequency

combs, our scheme is based on more efficient quadratic

frequency conversion rather than the third-order

nonlinearity. To overcome the phase mismatch, a partly

poled nonlinear ring is employed. Cascading second

harmonic generation and parametric down conversion

processes thus are realized through quasi-phase

matching (QPM). Coupling equations are used to

describe the related nonlinear interactions among

different whispering-gallery modes, showing some

interesting characteristics that are different from

conventional QPM technology.

Oral 3-4A-6

Exciton Type 2 in Graphene Bilayer Thi Hoa Vo, Thi Thao To, Van Thanh Ngo, Ai Viet Nguyen, Tri

Lan Nguyen


Excitons play important role in determining the

optical properties of condensed mater structures. The

exciton type 2 (indirect excitons) is formed when the

electron and hole have a difference in phase space. In the

frame work of the simplest four band model with two

direct or indirect band gaps we investigated and

discussed the formation problem of type 2 exciton in

graphene bilayers with a finite voltage difference.

Oral 3-4B-1

Invited Speaker

Digitized RF-over-Fiber for

Efficiency Fiber-Wireless Signal

Transport Christina Lim

The University of Melbourne To overcome the inherent issues related to analog

transport of wireless signals over optical fiber in a fiber-

wireless link, we have developed a digitized RF-over-

Fiber transport scheme. This paper reviews some of the

work we have done in this area to improve the

performance and efficiency of fiber-wireless links.

Oral 3-4B-2

Performance enhancement of radio-over-fiber

system by optical injection locking of a directly

modulated semiconductor laser Puspa Devi Pukhrambam, Ming-Hsueh Chuang, San-Liang

Lee, Gerd Keiser, Yung-Jr Hung, Joni W. Simatupang

National Taiwan University of Science and Technology

We investigated experimentally the effects of optical

injection locking on the performance of a directly

modulated semiconductor distributed feedback laser,

aiming for radio-over-fiber (RoF) applications. The

resonance frequency and noise level are measured at

various frequency detuning and external injection ratios.

Under optical injection locking with a -2.9dB injection

ratio and -12.5GHz detuning, the resonance frequency

improved 2.81 times and noise level at the peak reduced

by 3.5dB compared to a free running laser. We also

achieved 5dB dynamic range enhancement with the

same injection conditions. A resonance frequency

improvement of 4.2 times was achieved with increased

detuning. Performances of a RoF system were evaluated

at RF frequencies of 2, 2.5 and 3GHz using a 64-QAM

signal. From the error vector magnitude measurements,

the optical injection locking can both enhance the

linearity and reduce the noise for direct modulation, and

thus extending the dynamic range of input RF signals

Oral 3-4B-3

90-GHz Radio-on-Radio-over-Fiber System for

Linearly Located Distributed Antenna Systems Atsushi Kanno, Dat Pham Tien, Tetsuya Kawanishi, Naruto

Yonemoto, Nobuhiko Shibagaki

National Institute of Information and Communications

Technology

To realize a high-speed and high-capacity

transmission link for high-speed mobile vehicles such as

a bullet train, we propose a wavelength-division-

multilpexing radio-on-radio-over-fiber (WDM-RoRoF)

with a linearly located distributed antenna system (DAS)

at 90 GHz band. All the conventional microwave (MW)

radio signals such as a mobile telecommunication and

broadcast are capsuled together in a single millimeter-

wave (MMW) carrier radio. Centralized control at a

central office using the information of the car position

can optimize and distribute the suitable RoRoF signal to

each remote cell over optical fibers. Optical two-tone

generator with an optical modulator can easily generate

90-GHz RoRoF signal, and then, a high-speed

photomixer directly converts from the RoRoF signal to a

MMW RoR signal, which comprised of the MW signal

with 90-GHz carrier component, to irradiate over the air.

A heterodyning downconvesion performs the direct

frequency conversion from the MMW signal to a

consumer available MW signal.


PGC2012


Oral 3-4B-4

12-Gbit/s DMT Transmission Based on 1-GHz

RSOA with Mitigated Rayleigh Backreflection

Employing 10-MHz Clipping of Optical Seed

Carrier Moon-Ki Hong, Sang-Min Jung, Iwa Kartiwa, Sang-Kook Han

Yonsei University

We propose and experimentally demonstrate a novel

transmission technique for 12-Gbit/s DMT in a 20-km

single fiber loopback using a 1-GHz RSOA. Rayleigh

backreflection noise, which has been a critical obstacle

in a single fiber loopback, could be drastically mitigated

by employing 10-MHz RF clipping modulation of an

optical seed carrier.

Oral 3-4B-5

Photonic Generation of Microwave Pulses with

Wide Frequency Multiplication Tuning Range Jia Haur Wong, Sheel Aditya, Huy Quoc Lam, Kenneth Eng

Kian Lee, Peng Huei Lim, Perry Ping Shum


Technological University, Singapore In this paper, we propose an approach to generate

microwave pulses with wide frequency multiplication

tuning range based on the unbalanced temporal pulse

shaping (TPS) principle. The key to achieving a wide

tuning range is a linearly chirped fiber Bragg grating

(LCFBG) with programmable dispersion, which is

incorporated in the unbalanced TPS system.

Oral 3-4B-6

An OFDMA-PON architecture supporting

flexible all-optical VPN with source-free ONUs Zhiming Zhang, Mu Xu, Jiayang Wu, Pan Cao, Xiaofeng Hu,

Tao Wang, Yikai Su


We propose and experimentally demonstrate a new

orthogonal frequency division multiple access-based

passive optical network (OFDMA-PON) architecture

supporting flexible all-optical virtual private network

(VPN) with source-free optical network units (ONUs).

In our scheme, variable-bit-rate VPN communications

are achieved. Moreover, based on optical sideband reuse

at the ONU side and optical carrier suppression (OCS) at

the optical line terminal (OLT), the ONUs are source-

free and components for the operation of frequency shift

are eliminated

Oral 3-4C-1

Invited Speaker

CMOS Compatible Chips for

Nonlinear Optics David Moss, Roberto Morandotti, Marco

Peccianti, Alessia Pasquazi

University of Sydney All optical signal processing has attracted a lot of

interest in the past 10 to 15 years, particularly in the

context of all optical photonic integrated circuits that

offer the promise of high speed, low power, low cost and

small footprint devices. Recently, CMOS compatible

alternatatives to silicon, that avoid the problem silicon

has of high nonlinear absorption in the telecom band,

have achieved tremendous success in many areas such as

frequency combs. I will review the successes that the

Hydex platform has achieved in the past few years in

this field, highlighting research that has focused on

achieving practical, useful platforms for ultrahigh

bandwidth devices for telecom, computing and other

areas.

Oral 3-4C-2

Numerical analysis of the Four-Wavelength-

Mixing (FWM) in the ring-resonator on SOI Lianxi Jia, Junfeng Song, Xiaoguang Tu, Mingbin Yu, Patrick

Lo

Institute of microelectronics, A*STAR

We analyzed the continuous wave pumped FWM in

the ring resonator on SOI platform. A new method was

applied to combine the FWM effect and the wavelength-

selectivity effect of the ring. We took the free carrier

effect into our consideration. Through the comparison of

the spectrum response of the pump and the neighbored

signal under different pump power, an interesting de-

resonance phenomenon was predicted as shown in fig. 1.

The spectrum became a FANO like profile. While the

response wavelength shift of the pump wavelength was

no longer the quadratic relationship with optical power,

while the signal wavelength shift still kept the

relationship as shown in fig. 2(a). As the increase of the

pump power, the field enhancement factor of the

resonance wavelength in the pump wavelength showed

an extra reduction compared to the FE reduction in the

signal wavelength as shown in fig 2(b).

Oral 3-4C-3

Free carrier and group velocity dispersion

effects on silicon-based optical pulse

compression Dawn Tse Hui Tan

Singapore University of Technology and Design

The effects of group velocity dispersion and free

carrier lifetime on pulse compression efficiency and

pulse quality is investigated in a silicon-based optical

pulse compressor. A slightly higher amount of pulse

energy is carried in the pulse pedestals in the presence of

free carriers. The compression efficiency is observed to

decrease monotonically as the pulse repetition rate is

increased. Compressed pulses with <10% of the pulse

energy in the pedestals may be derived by appropriately

designing the dispersion in the pulse compressor.

Oral 3-4C-4

Invited Speaker

High Speed Optical Interconnect

based on silicon Photonics Haisheng Rong

Intel, US


PGC2012


The need for increased I/O bandwidth in and around the

CPU in many different computer systems has stimulated

the research into optical interconnects for many years.

Intel has been pursuing Silicon Photonics, a technology

which creates optical components from a silicon

substrate, as a candidate for these applications and has

developed a series of silicon based photonic building

blocks such as high speed modulators, detectors, hybrid

silicon lasers, wavelength multiplexer and de-

multiplexers as well as chip-to-fiber couplers. This talk

will describe a optical WDM link based these silicon

photonics building blocks, demonstrating all the key

technologies required to create a viable optical link for

system integration, and the many challenges to meet the

system requirements.

Oral 3-4C-5

Silicon microring resonator sensors for the

detection of volatile organic compounds Dongliang Fu, Qing Liu, Jack Sheng Kee, Mi Kyoung Park

IME/A*STAR

Sensing of volatile organic compounds (VOCs) has

attracted large attention recently in many areas. Many

different methodologies have been developed to achieve

these goals, for example electrochemical, electrical,

mass-sensitive, and optical approaches.

Here we demonstrate a new approach for detection

of VOCs based on silicon micro-ring photonic devices.

Si photonic devices have already shown promising

potential in sensing applications due to their high

sensitivity, capability for miniaturization, compatibility

with CMOS processes and thus potentially possible for

large area and practical applications. In this report,

polymers are selected as receptors for VOCs and

deposited on silicon micro-ring area. VOCs could

interact with those polymers and cause a change in the

refractive index of the polymers. The changes of

refractive index of the coating polymer layer are

reflected on the wavelength shift of the silicon micro-

ring photonic device, which is an indication of the

physical interactions between selected polymers and

target VOCs.

Oral 3-4D-6

Optically trapping cold atoms by using a silicon

nanopillar Thuy Anh Chu, Thi Nga Do, Tri Lan Nguyen, Ai Viet Nguyen


A new optical trapping model for cold atoms using a

nanopillar is proposed. A strong electromagnetic wave is

sent to the pillar to creat the existence of a stable bound

state of cold atom. An evanescent wave is generated

around the pillar and creates an effective attractive

potential. The result will be compared to some recent

trapping models.

Oral 3-4D-1

Invited Speaker

Brillouin Scattering in Plastic

Optical Fibers: Fundamental

Properties and Sensing Applications Mizuno Yosuke, Hayashi Neisei, Nakamura

Kentaro

Tokyo Institute of Technology We review the fundamental properties of Brillouin

scattering in plastic/polymer optical fibers (POFs) at

1.55 µm, and their potential applications in

strain/temperature sensing. First, the Brillouin frequency

shift (BFS), Brillouin bandwidth, and Brillouin gain

coefficient are clarified to be 2.83 GHz, 105 MHz, and

3.09×10-11

m/W, respectively, which are compared with

those of silica fibers. Next, we investigate the BFS

dependences on strain and temperature; they are

negative with coefficients of –121.8 MHz/% and –4.09

MHz/K, which are –0.2 and –3.5 times as large as those

in silica fibers, respectively, indicating that the Brillouin

scattering in POFs can be potentially applied to high-

accuracy temperature sensing with reduced strain

sensitivity. Then we summarize the recent progress on

the methods for enhancing the Brillouin signals in POFs,

which is highly required for practical applications.

Finally, we discuss the future prospects for developing

distributed strain/temperature sensors based on Brillouin

scattering in POFs.

Oral 3-4D-2

Invited Speaker

New technologies for optical fiber

distributed sensors based on

Rayleigh and Brillouin scattering Xuping Zhang, Junhui Hu, Yixin Zhang

Institute of Optical Communication

Engineering, Nanjing University, China For over two decades, optical fiber distributed

sensors based on Rayleigh and Brillouin scattering have

gained significant interest and considerable research for

their wide applications such as in structural health

monitoring (SHM) of large infrastructures and in

nondestructive interrogation of a fiber link. But the large

dynamic range, high resolution and faster measurement

are still full of challenging for these sensors. This talk

reports some of our new technologies to enhance the

performances of optical fiber distributed sensors. These

technologies include ν-OTDR using a superconducting

nanowire single-photon detector, frequency and time

division multiplexing techniques in COTDR, Cohen‘s

class signal processing method and multi-wavelength

coherent detection in BOTDR, and hybrid distributed

optical fiber sensor combined COTDR and BOTDA.

Oral 3-4D-3

Monitoring optical fiber sensor networks by

optical frequency-domain reflectometry Zhenyang Ding, Tiegen Liu, Kun Liu, Yang Du, Dingjie Li

College of Precision Instrument & Opto-electronics

Engineering ,Tianjin University and Key Laboratory of Opto-


PGC2012


electronics Information Technical (Tianjin

University),Ministry of Education, China

To improve the reliability that are very important for

large-scale and long range all optical fiber sensor

networks, monitoring optical fiber sensor networks is

necessary. We proposed a novel method for monitoring

optical fiber sensor networks using optical frequency-

domain reflectometry (OFDR) which provides a narrow

spatial resolution that enables us to locate closely

separated reflection and discrete sensors such as fiber

sensing grating and other microstructure fiber sensors.

Moreover, thanks to the inherently coherent detection, a

high dynamic range can be realized that allows the

measurement of Rayleigh backscattering throughout a

fiber network. Namely, OFDR also can monitor

distributed fiber sensors By using narrow linewidth laser,

OFDR's monitoring range satisfies the requirements for

long range optical fiber sensor networks. In our OFDR

system proposed, we can achieve to monitor optical fiber

sensor networks with measurement range of a few tens

of kilometers in a sub-cm spatial resolution.

Oral 3-4D-4

Design of Fast Pulse Coding and Decoding

System for BOTDR Fan Zhu, Xuping Zhang, Yixin Zhang

Institute of Optical Communication Engineering, Nanjing

University

Brillouin Optical Time Domain Reflectometry

(BOTDR) has the ability to measure strain and

temperature continuously in a fiber. It can be applied in

the health structural monitoring for large-scale civil

project such as bridges, dams and smart grid. Pulse

coding/decoding technique can improve Signal to Noise

Ratio (SNR) of BOTDR signal. However, at present, the

data process of pulse coding/decoding technique

generally relies on the software system. Such a system

will be large in size and time consuming in the

procedure of data transmission and processing. In this

paper, we designed a dedicated hardware system with

field programmable gate array (FPGA) using Simplex

codes. We optimized the hardware structure and data

processing algorithm to reduce the time cost.

Experiments proved that this optimized design has the

ability to obtain higher SNR of Brillouin backscattering

signal than single pulse with less time consumption.

Oral 3-4D-5

A Modified Demodulation Algorithm for Fiber-

Optic Distributed Temperature Sensing System

Based on Raman Scattering Tao Xia, Jiangtao Guo, Xiaobing Li, Xin Mao

Yangtse Optical Fiber and Cable

A modified demodulation algorithm in the fiber-

optic distributed temperature sensing system base on

Raman scatter is introduced. It is a combination of

wavelet domain denoising and iteration technique which

rises the signal to noise ratio(SNR) of the raw data and

finely compensate the attenuation difference between

Stokes and Anti-Stokes wavelength of the sensing fiber.

A 8 km conventional OM1 fiber is used as the

temperature sensing fiber and the raw data of

demodulated temperature is processed by the wavelet

domain denoising method, which enhanced the

temperature resolution from 8.0 to 1.0°C in the fiber end,

where we got the worst SNR. Further the attenuation

difference between the Stokes and Anti-Stokes

wavelength is finely compensated by a iteration of 8

times and a temperature resolution of 0.1°C is achieved

on a whole fiber of 8 km.

Oral 3-4E-1

Invited Speaker

Nanostructured silicon photonics

devices fabricated by CMO-

compatible process Toshihiko Baba

Yokohama National University

Photonic nanostructures have been studied toward

strong control of light emission and propagation as well

as large-scale photonic integration on a chip. One of the

attractive functions available with these structures is

generating slow light. It flexibly changes the group

velocity and delay of light as well as enhancing light-

matter interaction. A recent important progress in this

field is that now these structures can be fabricated by

using CMOS-compatible process. It enables multilayer

mask process, large scale integration and sophisticated

functionality. This talk will present on-chip tunable

delay lines and tunable dispersion compensators, both of

which are electrically controllable, nonlinear-based

ultrafast delay tuning applicable to retiming of fast

optical signals, on-chip optical correlator with a fast

delay scanner, symbol-rate-variable DQPSK coherent

receiver, efficient four-wave-mixing device and very

compact and fast MZ modulators.

Oral 3-4E-2

Modeling An Electrically Driven Single-

Graphene-Nanoribbon Laser for Optical

Interconnects Guangcun Shan, C.H. Shek

Department of Physics and Materials Science, City University

of Hong Kong

Graphene has two very important optical properties

of population inversion of electrons, and broadband

optical gain. As a result, graphene has potential for use

in lasers and amplifiers. In this work, we presented a

quantum master model and analyzed the properties for

the electrically pumped single-AGNR vertical-cavity

surface-emitting lasers (VCSEL)to investigate the lasing

action and laser properties for realistic experimental

parameters. A semiclassical approximation for the

output power and laser linewidth is also derived. The

laser threshold power was several orders of magnitude

lower than that currently achievable with semiconductor

microlasers. Our results have demonstrated that a single-

AGNR VCSEL can serve as a nanolaser with ultralow


PGC2012


lasing threshold. Implementation of such a GNR-based

VCSEL is especially promising for optical

interconnection systems since VCSELs emit low optical

power and single longitudinal mode over a wide

wavelength spectral range through tailoring GNRs.

Oral 3-4E-3

Modeling and performance analysis of single

substrate based 1×4 digital optical switches Ghanshyam Singh, Rajesh Kumar, Vijay Janyani, A. K. Solanki

MNIT Jaipur

With this work, for the first time a detailed modeling

and performance analysis is presented for a single

substrate based 1×4 digital optical switches with a

channel profile of proton exchanged Lithium Niobate.

Performance of the switches are optimized by theoretical

controlled modeling of proton exchanged channel

waveguides, electrode placement and with use of low

less bends to maintain transition losses at low levels.

Proposed structures are evaluated using beam

propagation method for a range of driving voltage

(10V~22V), with utilization of excellent electro-optic

properties of the proton exchanged Lithium Niobate

waveguides. The computed results for their performance

are in good agreement with previous published data.

Oral 3-4E-4

Invited Speaker

Photonic functional devices for an

optical network node using arrayed-

waveguide gratings Hiroyuki Tsuda

Department of Electronics and Electrical

Engineering KEIO University Yokohama,

Japan

An arrayed-waveguide grating (AWG) is a key

component of a wavelength division multiplexing

(WDM) system. Two types of silica-based wavelength

selective switch (WSS) using AWGs are fabricated, a

flexible grid WSS and a fixed grid WSS. They have

single input port for 40 wavelength channels

corresponding to the 100-GHz ITU grid of C-band, and

two output ports. Any wavelength signal can be output

to one of the output ports. The transmission loss and the

crosstalk are 5.9 dB and -25.1 dB for a flexible grid type,

8.1 dB and -23.0 dB for a fixed grid type, respectively.

On the other hand, high-speed WDM channel selection

is performed using a La-doped lead zirconate titanate

(PLZT) based, wavelength selective AWG. The

wavelength selection is successfully demonstrated with a

response time of less than 40 ns. The extinction ratio is

larger than 13 dB, and the 3-dB optical bandwidth is 110

GHz.


PGC2012


POSTER PAPER ABSTRACTS

P1-01

Fabrication of Biogenic Inorganic

Nanomaterials by Shewanella spp Cuong Ho, Anh-Tuyet Nguyeh, Thi-phuong-Quynh Le,

Shenghwa Jiang, Hor-Gil Hur

Institute of Environmental Technology, Vietnam Academy of

Science and Technology, Hanoi

Fabrication of biogenic nanomaterials is the benign

method that donot require the extreme environment as

chemical or physical methods. Shewanella spp. are

facultative and gram-negative bacteria capable of

respiring metals such as As(V), Cr(VI), Fe(III), Mn(III),

U(VI), Se(IV), Te(IV), or other substrates, and the

byproducts of the process were almost in the form of

nanostructured particles. In our research, the

nanoparticles of Se(0), AsxSy, UO3 or NiS, CoS were

produced by Shewanella spp.. Various structures of the

nanoparticle were formed, including the nanosphere of

Se and NiS, nanotube of AsxSy, nanowire of UO3, and

nanofilm of CoS. The result also revealed the important

role of cell surface materials in the formation of

nanostructures. Nanowires/ribbons of Se was produced

in the presence of Shewanella cells in 80% of DMSO.

The electrical and photoconductive property of the

nanostructure product implies its applications in the

materials science.

P1-02

Investigation of tunable TE graphene surface

plasmon Xiaoyong He, Qijie Wang



We report a design method of surface plasmon

polaritons (SPPs) sharp bends for the metalâ€―dielectric

interface based on transformation optics. The

metalâ€―dielectric waveguide bends with different

angles, which possess little radiation loss, are proposed.

Transformation media can be simply achieved with

homogeneous and nonmagnetic materials, which can be

constructed by altering two different dielectric films.

The main attractiveness of our method is it enables us to

bend SPPs through curved interfaces while preserving

the mode pattern. Electromagnetic simulations by a

finite-element method on detailed examples have been

performed to validate the designs.

P1-03

Simulation-based Study of Bragg Grating

Effects in Multi-layer Liposomes Wei Long Ng, Derrick Yong, Xia Yu, Chi Chiu Chan

Singapore Institute of Manufacturing Technology, Singapore

A simulation-based study was performed on a multi-

layered liposome to observe for Bragg grating effects.

The simulation model comprised layers with alternating

refractive indices, matching that of aqueous salt

solutions (Sodium Chloride and Zinc Sulphate) and

water. Simulation results produced transmittance spectra

that demonstrated good coherence with Bragg reflection.

The proposed construct thus holds potential for further

study as a resonant cavity, with prospects for biological

applications.

P1-04

Hybrid Plasmonic Waveguides for Nonlinear

Applications Sarah Aldawsari，Brian R. West

Department of Physics and Astronomy, University of Waterloo,

Canada

We investigate the use of hybrid plasmonic

waveguides (HPWs) for low power all-optical switching

via the Kerr effect. An HPW consists of an ultra-thin

layer of nonlinear, low-index dielectric sandwiched

between metallic and high-index dielectric layers. It

combines the deep sub-wavelength optical confinement

of gap plasmonic waveguides with the longer

propagation lengths of slot waveguides. We model the

guided modes of various HPWs using the finite element

method, and show that they compare favourably with

other nanophotonic waveguides, using an appropriate

figure of merit for their nonlinear response in the

presence of linear loss. The HPWs are designed to be

compatible with existing CMOS or silicon-on-insulator

(SOI) technologies, and to permit dense integration of

optical switching circuitry.

P1-05

Shaping the Profile of Photonic Crystal

Nanorods Xiaoxiao Jiang, Qiongchan Gu, Jiangtao Lv, Yanjun Lu,

Guangyuan Si, Hongjun Dun, Zhenhe Ma, Fengwen Wang School of Control Engineering, Northeastern University at

Qinhuangdao, China

Focused ion beam (FIB) is a versatile and powerful

instrument which can define patterns down to the

nanoscale without using masks. FIB can be expected to

produce sharp features and achieve high resolutions by

precisely controlling the beam variables and obtaining

optimized conditions. A common problem of using FIB

is tapered sidewalls which are caused by re-deposition

effects during etching. Tapered sidewalls will generate

high optical losses and make it difficult to produce well-

defined stop-bands in the transmission spectra of

photonic crystals. In this work, we experimentally

demonstrate an elegant way of shaping the profile of

photonic crystal nanorods fabricated in lithium niobate.

After truncating the tapered tops, almost vertical

sidewalls can be realized.


PGC2012


P1-06

A library of ultra-compact multimode-

interference coupler for optical splitters and

combiners on SOI System Haifeng Zhou, Lianxi Jia, Kavitha Devi Buddharaju, Guoqiang

Lo


Technology and Research), Singapore

By employing three-dimensional finite-difference

time-domain (3-D FDTD) method, we have designed

and built a useful library for 220nm-height 1x2

multimode-interference-based couplers with the

multimode region width ranging from 1.1Îµm to 3.2µm.

Even under the fundamental limitation of the spacing of

the output waveguides, calculations show that the

mainstream 1xN (N <8) optical splitters can be realized

with multimode waveguides shorter than 10µm

propagation length. The fabrication leverages on the

248nm DUV photolithography. In this study, we intend

to provide a systematic reference of the frequently-used

optical splitters or combiners in photonic circuits, which

can also be easily extended to 1xN cases for building

large switching arrays or wavelength division

multiplexers.

P1-07

Experimental Investigation of a Multi-

wavelength Erbium-doped Photonic Crystal

Fiber Laser Wanjun Zheng

Shenzhen Key Laboratory of Laser Engineering Shenzhen

University, P.R. China

A multi-wavelength Erbium-doped photonic crystal

fiber ring laser utilizing nonlinear polarization rotation

was demonstrated by experiment. A polarization-

dependent isolator with a 9m Er-doped photonic crystal

fiber was used to form an equivalent fiber filter. The

fiber laser without specific wavelength selection device

could operate at single-wavelength, dual-wavelength,

triple-wavelength and quadruple-wavelength depending

on the polarization. The intensity-dependent

inhomogeneous loss induced by nonlinear polarization

rotation was applied to reduce the mode competition.

Therefore, stable multi-wavelength output with the

power fluctuation of 0.27dB was generated at room

temperature. In the meantime, the tuning of wavelength

could be achieved through adjusting the polarization

controller. The quadruple-wavelength with a spacing of

2.2 nm was achieved, and the uniformity of multi-

wavelength spectra was improved by increasing pump

power. The proposed fiber laser with an extinction ratio

of higher than 40 dB achieved a low threshold power of

about 30 mW to realize simultaneously multi-

wavelength outputs.

P1-08

Chalcogenide Glass Microstructured Exposed-

core Fiber for Chemical Sensing Perrine Toupin, Laurent Brilland, Catherine Boussard-Plédel,

Bruno Bureau, Johann Trolès

Equipe Verres et Céramiques, UMR-CNRS 6226, Institut des

Sciences Chimiques de Rennes, Université de Rennes1, France

Chemical bonds of most of the molecules vibrate at a

frequency corresponding to the near or mid infrared field.

It is thus of a great interest to develop sensitive and

portable devices for the detection of specific chemicals

and biomolecules for various applications in health, the

environment, security and so on. A microstructured

exposed-core fiber has been elaborated to detect the

infrared signature of chemical species. This design

consists of a chalcogenide glass optical fiber with a

suspended micron-scale core that is partially exposed to

the external environment. To the best of our knowledge

it is the first realization of an infrared exposed-core fiber.

The sensitivity of this fiber to detect molecules such as

acetone and propan-2-ol has been compared with those

of single index fibers. Results show that an exposed-core

fiber can be more sensitive than a classical single index

fiber.

P1-09

The Fiber-Optic Sensing Fluorescence Detection

System for Chinese Traditional Medicine

Injection Based on Charge-coupled Devices Jiangtao Lv, Qiongchan Gu, Xiaoxiao Jiang, Guangyuan Si,

Zhenhe Ma, Fengwen, Wang

College of Control Engineering Northeastern University at

Qinhuandao, China

A method for the detection of Chinese traditional

medicine injection concentration is designed which is

based on the fiber transducer technology and the

fluorescence analyzing technology. It adopts a sphere

fiber-optics probe to realize the highly active caption

and transmission of the fluorescence signal. The charge-

coupled devices(CCD) is used to realize the high

efficiency detection of the fluorescence spectrum. The

fluorescence is highly active light spitted by the function

of the spatial dispersion and plane focusing of the

concave grating and the optoelectronic conversion of the

CCD. It formatted the spectrum on the focal plane of the

CCD. The spectrum is converted to the electric pressure

signal by the CCD detection. The experiment indicates

that the system has a minimum detecting limit of the

density is 0.04ppm.The partial least squares (PLS) is

used to get the the linear regression of the samples.The

value of the RMSEP is 0.1631.


PGC2012


P1-10

Spatial light source design for depth direction

coherence control Dong Wei, Hirokazu Matsumoto

Global Center of Excellence Program -Mechanical Systems

Innovation-School of Engineering, The University of Tokyo,

Japan

A new scheme for designing a spatial light source

for depth direction coherence control is proposed. This

method is based on a combination of spatial coherence

phenomena and the superposition principle. A computer-

generated light source is projected onto a moving

diffuser in order to realize multiple coherence peaks in

the depth direction by synthesizing the longitudinal

coherence function. Using this light source, we can

shape a coherence function with multiple peaks, which

are equidistant and have different strengths for

distinguishability. This method may provide a new way

of performing long-range depth direction measurements.

P1-11

Annealing Effects on Properties of InSbN Alloys

Prepared by Ion Implantation Daohua Zhang, Yunjiang Jin

School of Electrical and Electronic Engineering

Nanyang Technology University, Singapore

Effects of furnace and rapid thermal annealing on

InSbN alloys prepared by nitrogen ion implantation

were investigated with various techniques, including X-

ray diffraction, X-ray photoelectron spectroscopy,

photoluminescence and photocurrent system. It is found

that the relative low temperature annealing benefits In-N

formation, which is consistent with the energy bandgap

measured with the photocurrent system. Excess thermal

energy (higher annealing temperature or longer

annealing time) will lead to less incorporated nitrogen

but more interstitial defects, such as N-N bonds and Sb-

N bonds. Theoretical Analysis based on

thermodynamics agrees well with the experimental

results.

P1-12

Face Recognition based on IFS with GA and BP

Neural Network

Huasong Chen, Keding Yan, Qinghua Wang, Zhenhua Li

NanJing University of Science and Technology

Face is a complex multidimensional visual model

and developing a computational model for fast face

recognition is difficult. This paper presents a method for

face recognition based on Iterated Function System(IFS)

with Genetic algorithm(GA) and BP neural network. IFS

with GA is used for feature extraction for obtaining both

partial feature and holistic feature, and BP neural

network is used for identifying. The method has been

tested on ORL database with total recognition accuracy

of 86.5%, 90.00% for face with moustache or beard and

87.72% for common face.

P1-13

A CO Detection System Based on Double Fiber

Bragg Gratings Shuhua Ma, Qiongchan Gu, Jiangtao Lv

College of Control Engineering Northeastern University at

Qinhuandao, China

In this paper, a double optical fiber sensing system

based on a set of differential absorption technique is

designed which is according to the CO molecular

spectral absorption characteristics. The system structure

is shown on the figure 1. The light source of it is LED.

Reentrant type absorption cell is used as the gas

chamber. The wavelength modulation and narrow beam

are obtained by the fiber grating and photoelectric diode.

The differential absorption detection is to be realized by

the application of fiber Bragg grating narrowband filter

characteristics and the double optical path. It is shown

by the experiment that the system has feasibility. The

high sensitive detection of the CO gas can be realized by

it.

P1-14

Discrete light propagation in photonic liquid

crystal fibers Katarzyna Rutkowska

Faculty of Physics, Warsaw University of Technology, Poland

Photonic crystal fibers (PCFs) are the special class of

microstructured fibers composed of the air-holes

periodically distributed in the silica cladding. Photonic

liquid crystal fibers (PLCFs), obtained by the infiltration

of the PCFs with liquid crystalline materials, possess

unique optical properties. Application of liquid crystals

(LCs) allows for its refractive indices to be dynamically

adjusted, resulting thus in the high tunability of the

optical properties of PLCFs. It may be achieved by

applying external factors or by the light beam itself (due

to nonlinear effects when optical power is high enough).

While in most cases, the averaged refractive indices of

typical LCs are higher than that of silica, the PLCF can

be considered as a matrix of waveguide channels and as

a consequence discrete light propagation may be

analyzed therein. In this work, theoretical data from

numerical simulations accompanied by the preliminary

results of the experimental studies will be presented.

P1-15

Laser-Based Mosquito Repelling Module Chantira Boonsri, Sarun Sumriddetchkajorn, Prathan

Buranasiri

Department of Applied Physics, Faculty of Science King

Mongkut‘s Institute of Technology Ladkrabang, Thailand


PGC2012


This article proposes and shows that a low-optical-

power laser when arranged in a zigzag fashion in a free

space can create strong air thermal stress and form a

chemical-free optical net that is capable of repelling

adult mosquitoes away. Experimental proof of concept

using a pointer-like diode-pump solid-state laser (447

nm wavelength and 500 mW maximum) and reflective

sheets shows that all 80 adult Aedes albopictus

mosquitoes are completely trapped inside the open glass

chamber. Most of the adult mosquitoes prefer to stay

near the bottom of the open glass chamber as it is cooler

than the top part that contains several zigzagging laser

beams. Reducing air thermal stress via increasing the

spacing between the two adjacent laser beams allows the

adult mosquitoes to easily escape out of the zone of the

laser beams.

P1-16

Experimental and Theoretical Study of

Excitonic Electroabsorption in High Purity

GaAs at Room Temperature Durga Prasad Sapkota, Madhu Sudan Kayastha, Makoto

Takahashi, Koichi Wakita

Graduate School of Engineering, Chubu University, Japan

The excitonic absorption spectrum in high purity

GaAs has been theoretically studied in the presence of

electric field taking into account of excitonic band and

continuum band at room temperature. We have

calculated the Stark shift, hight of exciton peak and

broadening of exciton as a function of electric field. We

also compared these results with the experimental results

and found the close agreement with experimental.

P1-17

A Research of Stress Survey System Based on

Fiber Bragg Grating Xiaohong Ni, Zhiguang Xu

The department of computer of Cangzhou Normal University

A double fiber grating strain sensor based on the

temperature compensation is proposed in this paper.

FBG is st uck on a specialist ructured cantilever. The

sensor is constructed by the connecting optical fiber,

sensing grating, cantilever beam, mass and support. The

sensor is fixed on an object to be measured. The

Structure diagram of the FBG sensor is shown as figure

1. The cantilever beam structure is used in this paper to

ensure the good linearity in measuring range of sensor

grating wavelength drift. The equal strength cantilever

structure is shown in figure 2. The experiment result

indicate that the distance of center wavelengths of two

reflecting peaks is relative not to temperature change but

load variety as linearity. Carries on the data fitting to the

experimental findings, and the linearity is up to 0.96.

P1-18

Minimize quantum-defect heating in thulium-

doped silica fiber amplifiers by tandem-

pumping Junhua Ji, Seongwoo Yoo, Ping Shum, Johan Nilsson

Optimus, School of EEE, Nanyang Technological University,

Singapore

In this paper, we propose a simple model to

investigate the quantum defect between pump and signal

photons in thulium-doped fiber amplifiers. The

achievable quantum defects are limited by several

factors, i.e., pump and signal wavelengths, fiber length,

area ratio between inner cladding and core, and gain and

absorption at signal and pump wavelengths, respectively.

Through the proposed model, we find that the quantum

defect can reach as low as 1%-level. We also find that

the smaller area ratio between inner cladding and core,

the lower quantum defect can be obtained. The ultimate

pumping approach will be core pumping. This can be

realized through tandem pumping the thulium-doped

fiber by the other fiber source at shorter wavelength with

high brightness. Finally, it is necessary to optimize the

pump and signal wavelengths and match the fiber length

to obtain the lowest quantum defect.

P1-19

Integration of Si/SiO2 Multilayer GRIN Lens

Mode-Size Converter to Single-Mode Si Rib-

Waveguide Ter Hoe Loh, Qian Wang

Data Storage Institute, Singapore

We report an ultra-compact Si/SiO2 multilayer

GRIN lens optical mode size converter that can

transform the optical mode of standard single-mode

fiber (diameter:~9um) to single-mode sub-micron sized

Si shallow rib waveguide on SOI-platform over a

compact coupler length of 11~12um.

P1-20

Photonic Liquid Crystal Fibers - perspectives

for practical applications Sławomir Ertman, Marzena Tefelska, Miłosz Chychłowski,

Agata Siarkowska, Tomasz. Woliński

Warsaw University of Technology, Faculty of Physics, Poland

In last few years more than 100 paper has been

published in the field of photonic liquid crystal fibers

(PLCFs) - the new class of optical waveguides, that

merges unique properties of liquid crystals and

microstructured optical fibers. There was many

interesting experimental observations, including tunable

birefringence, retardation, tunable polarizers and filters,

showing great potential for practical applications.

However there is few issues that still have to solved

before such fibers can be utilized in real devices and

optical systems. In this work we focus on such issues


PGC2012


like long term stability, repeatability of production,

possibilities of connecting with other existing fibers and

efficiency of electrical steering. We will discuss main

challenges and present proposition of solutions that may

lead in future to commercialization of photonic liquid

crystal fibers.

P1-21

A Two-Fiber Bragg Grating Gas Leakage

Detection Sensor Lijuan Yang, Tao Liu, Jiangtao Lv, Guangyuan Si

School of Control Engineering, Northeastern University at

Qinhuandao, China

The outside temperature and pressure mutations are

important factors in long-distance natural gas pipeline

leakage detections. The detection of the velocity of the

leaking gas is also critical. In this paper, a new optical

fiber gas sensor based on the two-fiber array is

developed. Each fiber has a sensor, which can reduce the

temperature disturbance. Every fiber system can also

provide quantitative data of the pipeline leakage rate

based on the self-heating effects. The system structure is

shown in Figure 1. The optical energy leaking from the

fiber is absorbed by the metallic coating, which raises

the temperature and changes the grating pitch of the

fiber-Bragg-grating (FBG). When gas is leaking from

the pipeline blow on the fiber grating, its temperature

changes accordingly. The gas leaking velocity can be

determined by monitoring the change of resonance

wavelength.

P1-22

Self-Assembled Microstructures and Their

applications for Microlasers and Sensors Rui Chen, Van Duong Ta, Handong Sun Division of Physics and Applied Physics, School of Physical

and Mathematical Sciences, Nanyang Technological

University, Singapore

Optical microcavities are designed microstructures

which trap light by resonant recirculation in a small

volume. At present, fabrication and investigation on

optical microresonators have attracted extensive

research interest. In this talk, we present our recent work

about the fabrication of self-assembled microstructures

for optical microcavities. By incorporating active

material into the microstructure, optically pumped

whispery gallery mode lasing phenomenon is observed

at room temperature. The lasing behaviors with different

cavity sizes, polarization and the tunable lasing emission

have been observed and discussed. Moreover, refractive

index and temperature sensing based on the

microstructures have been demonstrated. Owing to the

flexibility and controllability, this work provides an

excellent platform for future investigation about light

and matter interaction and spectacular new devices.

P1-23

Photonic Generation of Microwave/Millimeter

Waves by Using an Optic Fiber Ring Cavity

with a Chirped Gaussian Pulse Injection Haiyan Chen

School of Physics Science and Technology, Yangtze

University, P. R. China

We propose a novel solution for optical generation

of microwave and millimeter waves, the field expression

in time domain for a ring fiber cavity is derived. It is

shown that different microwave and millimeter signals

can be achieved, and the greater chirp parameter, the

more output by the ring cavity, more millimeter wave

frequency will be obtained. Negative chirp makes pulse

distortion.

P1-24

Quantitative diagnosis of cervical precancer

using fluorescence intensity and lifetime from

the stroma Jun Gu, Chit Yaw Fu, Beng Koon Ng, Sirajudeen Gulam Razul,

Soo Kim Lim


Fluorescence microscopy has been widely used in

characterizing the pathological states of tissues because

intensity and spectra arise from fluorescence emission

can reveal structural and biochemical information of

biological samples and the excited state lifetime from

the fluorescence has been verified to identify tissue

pathology because of its sensitivity to the fluorophore

microenvironment. In our clinical study, we have

demonstrated that early cervical cancer can be

quantitatively diagnosed using fluorescence microscopy

in conjunction with extreme learning machine (ELM)

classifier which can result in a concurrently high

sensitivity of 99.1% and specificity of 99.6%. The

results suggest that the proposed technique can be used

to aid and supplement the traditional histopathological

examination of cervical cancer.

P1-25

Investigation on plasmon-induced bubble

formation in fluids Zehui Yong, Kai Zhang, Aoqun Jian, Zefeng Chen, Xuming

Zhang, Yu Wang

Dept. of Applied Physics, The Hong Kong Polytechnic

University

This work studies the vapor bubble formation in

fluids by plasmon-induced heating methods. It is shown

that, plasmons can be properly ex-cited by photon

illumination on metal pads, which can in turn generate

vapor bubbles by a large metal resistivity. By numerical

methods, we also found that the state of bubble

formation (shape, size, number, etc.) can be finely

controlled by pattern and sizes of metal pads, as well as


PGC2012


their host medium. The results are then verified by

experiments, using a continuous-wave laser source and

different chromium pads immersed in various types of

fluids. The work also demonstrates potential

applications of the bubbles by creating micro-valves and

micro-pumps in microfluidic channels.

P2-02

Measuring Photodarkening from Ytterbium-

doped Fiber Amplifier at 1064 nm Wavelength

Emission Nanxi Li, Seongwoo Yoo, Jin Xue, Xia Yu, Ping Shum

Singapore Institute of Manufacturing Technology (SIMTech),

Singapore

In this paper, photodarkening effect in Ytterbium

doped fiber (YDF) amplifier is experimentally

investigated and analyzed. The experimental

measurement on such effect is conducted on an YDF

amplifier at 1064 nm wavelength emission, under both

saturated and unsaturated operational regimes. Our

results demonstrate that saturated operation created by

higher stimulating power level is favored to mitigate the

photodarkening effect as well as to enhance the

amplifier‘s long term reliability. Such phenomenon is

explained in terms of population inversion level of

Ytterbium ion doped in fiber.

P2-03

Efficient bending of surface plasmonics through

a sharp corner Hongyi Xu, Su Xu, Hongsheng Chen, Handong Sun, Baile

Zhang

Division of Physics and Applied Physics, School of Physical


University, Singapore 637371, Singapore

Surface plasmonics is the key component of the

next-generation photonics because of its subwavelength

features that bring forth nanoscale plasmonic devices

and enhanced light-matter interaction. The effective

manipulation of surface plasmonics, as a result, is highly

demanding in the realization of ultra-compact on-chip

photonic devices. A fundamental problem to be solved

in this topic is how to route the propagation of surface

plasmonics around a sharp corner with minimum

scattering loss. Traditional methods such as bending

tapers require a relatively long transition region and thus

cannot effectively address this problem in a compact

space. Here, theoretically and experimentally, we

demonstrate in microwave regime that by implementing

a bending adapter designed by the area-preserved

nonmagnetic transformation optics method, the

scattering of surface plasmonics through a sharp corner

with zero radius can be effectively suppressed, and the

transmission is significantly increased.

P2-04

Controlling Light Through Double-Ring Arrays Xiaoxiao Jiang, Qiongchan Gu, Hailong Liu, Jiangtao Lv,

Song Cao, Guangyuan Si, Hongjun Dun, Ning Xiang, Aaron

Danner


Qinhuangdao, China

Plasmonic devices with fascinating optical properties

have been of great interest for years. Owing to the

capability of concentrating light into deep

subwavelength volumes, such plasmonic

nanocomponents have found extensive application in

surface-enhanced Raman spectroscopy, waveguiding,

and sensing. Since the plasmon modes of a

nanostructure are determined by its composition, scale

and shape, they can be manipulated in many different

ways. Numerous approaches have been realized using a

variety of geometries, including nanoshells, nanorings,

nanorice, and nanodisks. All these achievements take

advantages of the highly shape-dependent properties of

plasmonic nanostructures because electromagnetic

waves can be coupled to collective electron oscillations

on the metallic-dielectric interfaces, existing as either

propagating or localized modes. In this work, we

investigate the optical response of a broadband light

source passing through a double-ring array. Calculated

results agree well with measurements. Our approach

may find new opportunities for plasmon-assisted sensing.

P2-05

Exciton-phonon Coupling in Individual ZnTe

Nanorods Studied by Resonant Raman

Spectroscopy Qing Zhang, Qihua Xiong

Division of Physics and Applied Physics, School of Physical


University, Singapore

The exciton-phonon coupling in zinc telluride (ZnTe)

nanorods (NRs) is investigated by resonant micro-

Raman spectroscopy. Up to fifth-order LO phonons are

observed at room temperature due to a dominant

Fröhlich electron-phonon interaction. The Huang-Rhys

factor–and thus the exciton-LO coupling strengths–is

evaluated, showing increasing with the NR diameter.

Surface optical (SO) phonon and its high-order

overtones are observed for the first time, whose

positions are consistent with a dielectric continuum

model. Strong acoustic phonon-exciton coupling induces

a high-frequency shoulder above each nLO peaks with

two maxima located around 14 cm-1 and 32 cm-1,

which are assigned to transverse acoustic (TA) and

longitudinal acoustic (LA) phonons, respectively. The

resonant multi-phonon scattering process involving

acoustic and LO phonons is discussed based on an

exciton-intermediated cascade model, where a scattering

sequence of acoustic phonon followed by LO phonons is

favorable. These results advance the understanding of


PGC2012


electron-phonon coupling in quasi-one-dimensional

systems.

P2-06

Comprehensive Experimental Study to Develop

Nanoparticle Based Optical Fiber Humidity

Sensor with Linear Response over Large

Dynamic Range Sunil Khijwania

Department of Physics, Indian Institute of Technology

Guwahati, India

Optical fiber RH sensor with linear response over

large dynamic range & optimum sensitivity employing

dielectric/metal nanoparticle and 3 different schemes,

evanescent wave absorption, nanoparticle doped

microstructured fiber core and SPR is reported.

P2-07

Structural Design of Microwave Photonic Filter

based on Adaptive Genetic Algorithm with

Disturbance Operation Xiangnong Wu Ye Yin, Jing Zhang, Qian Ni

College of Information, Mechanical and Electrical Engineering,

Shanghai Normal University, P.R.China

In this paper, the optimization for an FBG array

based microwave photonic filter using adaptive genetic

algorithm with disturbance operation is proposed,

established and studied. In the design we assume that the

population size is 50, the maximum number of iterations

is 50, the FBG reflectivity is from 0 to 1 and there are

six uniform FBGs in the FBG array. The simulation

results show that the optimized simulation time can be

reduced by half, from 23.5 seconds to 10.8 seconds,

compared with that using the traditional genetic

algorithm without disturbance. The influences of the

number of the FBGs and the range of the tap coefficients

of the FBGs are detailed studied. The amplitude

frequency response of the MPF will deteriorate when the

range of the tap coefficients of the FBGs become

smaller. The simulation results for different values of

stopband rejections show that the proposed algorithm is

feasible.

P2-09

Two-photon Lasing Threshold Reduced by

Phonon-assisted Anti-Stokes Emission in

Semiconductors Qihua Xiong

School of Physical and Mathematical Sciences, Nanyang


Photon upconversions process that convert long-

wavelength photon source to short-wavelength emission,

have attract great interest for their fundamental scientific

importance and potential applications in IR-display and

laser technology, bio-image, solar cell and optical

refrigeration, etc. Recently, a new type of multiple

longitidual optical (LO) phonon asisted anti-stokes

photoluminecence was proved in CdS nanobelt as a

result of strong exciton-LO phonon coupling. Based on

the LO-assisted anti-stokes emission process, net laser

cooling was realized. Here we report the first

observation of anti-stokes photoluminecence in another

polar semiconductor ZnTe nanobelt with a strong

exciton-phonon coupling. We show that the two photon

absorption lasing threshold of ZnTe is extensively

reduced by ~76% at 80 K and ~ 66% at 40 K as the

excitation wavelength enter phonon-assisted anti-Stokes

upconversion zone. The described findings can be

readily extended to cover and implemented in most of

types of polar semiconductors.

P2-10

Optical Properties of Nanorods on Si Substrate Kyohei Nakagawa

Department of Electrical and Electronic Information

Engineering Toyohashi University of Technology Toyohashi,

Aichi, Japan

We have experimentally and theoretically

demonstrated a suitable design for optical antennas with

nanorods on a Si substrate to realize plasmonic

integrated circuits (PICs). We show that the reflectance

measurement results for gold nanorods arranged on the

Si substrate correspond to the results calculated by the

finite-difference time-domain (FDTD) method. Based on

these studies, we designed a structure for the

arrangement of aluminum nanorods for Si-PICs for a

wavelength range of 800–2000 nm, to match the

wavelengths of 1300 nm and 1550 nm that are

commonly used in optical communication systems.

P2-11

Fabrication of F-ion Implanted Quantum Well

Intermixed Waveguide Grating Ramesh Kumar Sonkar, Utpal Das

Department of Electronics and Electrical Engineering

IIT Guwahati, India

In this paper, ion implantation induced quantum well

intermixing has been used to fabricate waveguide

gratings for applications at CWDM wavelengths on

InGaAsP/InP multi quantum well structure, are

presented. The waveguide was fabricated using reactive

ion etching (methane chemistry) with a surface

roughness 2~3nm. Focused ion beam had been used to

open windows for fluorine implantation on titanium

mask followed by anneal under forming gas

environment. The transmission spectrum of the

waveguide had been measured and found cross talks of -

10dB among the adjacent channels. The insertion loss of

the fabricated waveguide gratings is less than 5dB.


PGC2012


P2-12

Controlling the Properties of Microstructured

Plastic Optical Fiber Bragg Gratings using

Acousto-Optic Excitation Carlos Marques, Lucia Bilro, L. Khan, Roberson Oliveira,

David Webb, Rogério Nogueira

Instituto de Telecomunicações, Pólo de Aveiro, Portugal

A fine control of the mPOF Bragg grating spectrum

properties, such as maximum reflected power and 3dB

bandwidth, through acousto-optic modulation (AOM)

using flexural regime is presented. A numerical

comparison of the strain field along mPOFBG – AOM

and the similar structure with SMFBG – AOM was

presented, showing that the strain field amplitude is

higher along the mPOFBG due to its smaller mechanical

stiffness. The obtained results can be used in the

development of fine-tuned optical filters using low

voltage sources and low frequency regimes, to obtain

tunable optical filters and to control the shape of the

spectrum. Studies of the behavior in different gratings

(such as phase shifted and long period gratings) for

photonic applications, such as tunable notch filters or

tunable cavities, are in progress. It can potentially be

applied on tunable optical filters for POF transmission.

P2-13

Silicon Photomultiplier with Lateral Bulk-Si

Quenching Resistors Fei Sun, Ning Duan, Guo-Qiang Lo


Technology, and Research), Singapore

A new structure of silicon photomultiplier (SiPM) is

presented, where lateral bulk-Si resistors was introduced

to replace the conventional poly-Si quenching resistors.

The replacement can not only eliminate the poly-Si

related fabrication process, but also greatly reduce the

area of metal wires. Thus the fill factor of the device can

be increased noticeably. Furthermore, due to the

separation of the contact region and the active region,

the quantum efficiency of the device can also be

improved, especially for light with visible or ultraviolet

wavelengths. The functionality of the device proposed

and its performance improvements have been confirmed

by numerical simulation. The quantum efficiency at

300nm wavelength increases from 20% to 86%.

Therefore, SiPM devices with very high photon

detection efficiency will be very likely to be achieved.

P2-14

Underwater Communication System For Deep

Sea Divers Using Visible Light Ashish Kumar Das, A. M. Vibin, Shanthi Prince, Arpita Ghosh

Department of Electronics and Communication Engineering

SRM University Kattankulathur-603203, Tamil Nadu, India

This paper discusses a novel idea for transmission of

voices in real time, underwater so that the system can be

used by the deep sea divers for both lightning and data

transfer applications simultaneously. Experiments were

performed using white light, green and blue light

respectively to transfer voice in real time in a water tank

and the graphs were obtained. Based on the comparison

study, we make recommendations for the selection of

the right colour of light for communication efficiency in

specified underwater environments.

P2-15

Modelling and Experimental Analysis of Wide-

Band Flat-Gain Amplifier Utilizing High

Concentration of EDFA Belal Hamida, Khan Sheroz, Ahmed Naji, Wajdi AL-Khateeb,

Harith Ahmad, Sulaiman Huran

Optoelectronics Laboratory, Faculty of Engineering

International Islamic University Malaysia (IIUM), Gombak

A flat-gain EDFA is demonstrated using Erbium

doped gain medium of high concentration on a host

medium of silica-based fiber. The suggested EDFA

model, using Matlab, shows uniform gain over the

varying wave-lengths. The parameters of input signal

power, pump power and length are optimized for a

maximum EDFA length of 1.5m in the C-band and 9m

in the case of L-band. The seamless gain features both

for C-band and L-band from modeling are supported by

closely experimental validation results. The overall gain

remains more or less flat over a spectrum ranging from

1525μm to 1605μm with a gain variation of ±3dB, a

behavior matching that of a band-pass filter in the time

domain

P2-16

Fluorescence nanodiamond for optical and

photoacoustic imaging applications Bailin Zhang

Department of Biomedical Engineering, University of Texas at

San Antonio

Fluorescence nanodiamonds (FNDs) produced with

radiation of high energy beam can emit red fluorescence

after excitation of green-yellow light because of (N-V)-

point centers inside of it. Due to excellent characteristics

of nontoxicity, non-photobleacing and rich surface

groups, FND is of great potential biomedical and

biological applications. Through surface biomodification

of folic acid, peptide and transferrin protein,

fluorescence nanodiamonds have been applied in

cellular and zebrafish embryo development imaging.

Considering the tissue penetrating depth limitation of

optical imaging, a novel function of photoacoustic

imaging of fluorescence nanodiamonds was explored. It

is proved for the first time FND is of amazing

photoacoustic signal. A further, with the conjugation of

nanogold, the photoacoustic signal of FND can be


PGC2012


greatly enhanced, which is attributed to the energy

transfer between FND and nanogolds.

P2-17

Optimized Sandwiched Surface Plasmon

Resonance Enhanced Biosensor for Multiplex

Biomarker Detection Tianxun Gong, U. S. Dinish, Shuwen Zeng, Malini Olivo, Ken-

Tye Yong



In this study, we performed finite element method

(FEM) simulations to optimize the configuration of gold

nanorods (GNR) enhanced surface plasmon resonance

(SPR) sensor and discovered its application for

multiplex antigens detection. Our work analyzed the

near-field coupling between the sensing film and GNR.

By systematically study the effect of gold film thickness,

GNR-to-film distance and GNR dimensions on SPR, it

was found that for GNR width smaller than 40nm,

length change in GNR brought about significant SPR

wavelength shift on the sensor, while the sensor is

insensitive for GNR-to-film distance. As an application,

we adopted GNRs of width 20 nm and aspect ratios from

2 to 4 and demonstrated the concept of conjugating gold

film and GNRs with anti-Immunoglobulin G (anti-IgG)

antibodies for multiplex detection of various IgG

proteins with more than 100nm separation on their SPR

wavelengths.

P2-19

Optical Trapping with Low Numerical Aperture

Objective Lens Raktim Dasgupta

Laser Biomedical Applications and Instrumentation Division,

Raja Ramanna Centre for Advanced Technology Indore-

452013, India

High numerical aperture (NA) objective lenses used

in optical tweezers typically limit the axial working

range below 100 Âµm and since these lenses have

magnification at the higher end (typically 100X) offer a

narrow field of view resulting studies possible only over

a small sample volume. Therefore, the light gradient

field of phase engineered multiple plane wave three

dimensional interference patterns generated at the focal

plane of a low NA objective lens was used to stably trap

particles in three dimensions. By employing a spatial

light modulator to phase engineer the interfering plane

waves the approach could be used to generate single or

multiple trap points. Objective lens with NA 0.55,

working distance as long as ~ 9 mm and magnification

of 50x could be used to optically trap objects allowing

for manipulation as well as imaging over a large sample

volume using this technique.

P2-20

Modeling of Photonic Crystal Fibers with

circular and elliptical air holes arranged in

Fibonacci series manner Ghanshyam Singh

Department of Electronics and Communication Engineering,

Malaviya National Institute of Technology Jaipur – India

With this work, novel index guiding photonic crystal

fibers with rings of cladding holes (circularly and

elliptically shaped) arranged in the Fibonacci series are

proposed. The dispersion and the confinement losses in

PCF are evaluated for light signal at 1.55 µm

wavelength, by employing alteration in various design

parameters. Its full vector analysis using anisotropic

perfectly matched layers has been done to validate the

accuracy of the modeled PCF in a finite difference time

domain environment. It was found that for such PCF

modeling, the lower value of dispersion is found to be

7.311 ps/(nm.km) and the zero dispersion wavelength is

shifted to lower infrared region (IR) in accordance to

variation in the hole diameter to pitch ratio.

P2-21

Simultaneous measurement of curvature and

temperature based on two waist-enlarged fiber

tapers and a fiber Bragg grating Qingqiang Meng, Xinyong Dong, Zhemin Chen, Ni Kai

Institute of Optoelectronic Technology, China Jiliang

University

A fiber sensor scheme for simultaneous

measurement of curvature and temperature is presented.

The sensor head is formed by combining a fiber Bragg

grating (FBG) with a all-fiber Mach-Zehnder

interferometer (MZI), which is formed by cascading two

waist-enlarged fiber tapers. The MZI is sensitive to

curvature and surrounding temperature, while the FBG

is only sensitive to the later. As a result, simultaneous

measurement of curvature and temperature can be

achieved by monitoring wavelength shifts of the MZI

and the FBG. Sensitivities of 6.73 nm/m-1 and 54.7

pm/ºC are achieved experimentally for curvature and

temperature measurements, respectively. This sensor has

a compact configuration, because the FBG is inset into

the MZI. Furthermore, the sensor also has the

advantages of low-cost fabrication process and good

physical strength.

P2-22

Improvement the Dynamic Response of

QDSOA-MZI-based Optical Logic Gates Hussein Taleb, Kambiz Abedi

Department of Electrical Engineering, Faculty of Electrical and

Computer Engineering, Shahid Beheshti University, Iran

Because of unique characteristics of quantum-dot

semiconductor optical amplifiers (QD-SOAs), such as


PGC2012


ultra-fast gain recovery, low noise figure and high

saturated output power, they are promising candidate for

development of high speed MZI-based optical logic

gates. However, due to slow phase recovery in QD-

SOAs, the operating speed of the developed gates is

limited to several Gb/s. In this paper, improvement the

dynamic response of MZI-based optical logic gates is

investigated by accelerating the phase response in QD-

SOAs. We show that the optimal design of the pumping

scheme can improve the phase response of QD-SOAs,

which can be employed for enhancement the dynamic

response of all-optical logic gates. Simulation results

demonstrate that operating speed of MZI-based logic

gates can be raised beyond 100 Gb/s, which can never

be reached under the conventional pumping schemes.

P2-23

Dispersive Transparency in Metamaterials

using Conductively Coupled Resonator Scheme Shuvan Prashant Turaga, Sudheer Kumar Vanga, Yuanjun Yan,

Andrew Anthony Bettiol


We propose a new metamaterial design having two

conductively coupled resonators yielding a transmission

analogous to electromagnetically induced transparency

(EIT). In the past years, several analogues of EIT have

been explored and demonstrated in classical mechanics,

integrated photonics and metamaterials based on

inductively coupled resonator schemes. In our case, the

metamaterial unit cell consists of a split ring resonator

and a square ring. The EIT analogous response is

attributed to the coupling of individual resonances

leading to dispersion employable in slow light and

sensing applications. The numerical simulations were

performed using a standard FDTD solver and the

structural parameters were optimized to get the desired

transparency window. The design of the metamaterial

structure, its fabrication and characterization will be

presented.

P2-24

A Fluorescence Fiber Temperature Detection

System Based on the Lifting-Wavelet Zhenpu Gu

Hebei University of Science and Technology

In this paper, a temperature measurement system

based on the fluorescence intensity of the ruby crystal is

designed. The structure diagram of this system is shown

as figure 1. The fluorescence wavelength-division and

time-division multiplexing techniques were applied in

this paper. It reduce the excitat ion light leakage,

improve the signal to noise ratio and sensitivity depends

on the monitoring of the fluorescence emission from

pink ruby crystal to measurement temperature. The

lifting-wavelet transform was used to eliminate the noise

in the fluorescence signal. The result s show that t his

system has higher precision and resolution by the

temperature experiment. The resolution is that the

temperature region is 300-450K, the resolution is ±0.4ºC,

the error of the probe is to be ±3 K and the signal to

noise is 25 dB.

P2-25

Self-detached TiO2 nanotube array membranes

for application in dye-sensitized solar cells Jia Lin, Xianfeng Chen, Haitao Huang

Department of Physics, Shanghai Jiao Tong University,

Shanghai

High-quality free-standing TiO2 nanotube array

(TNA) membranes were obtained by a self-detaching

electrochemical anodization in ethylene glycol, a facile

but reliable method. The synthesized TNA membranes

can be easily transferred to fluorine-doped tin oxide

(FTO) substrates and glued by TiO2 nanoparticle paste

without any cracks. The membranes are optically

transparent after subsequent annealing to induce

crystallization. Compared with the front-side illuminated

DSSCs using the bottom-closed TNA membranes

attached to FTO substrates, DSSCs consisting of TNA

membranes with both ends open showed enhanced solar

energy conversion efficiency without further treatments.

The improved crystallinity and thus superior electron

transport can also be obtained by elevated temperature

crystallization of high-quality TNA membranes. The

TNAs kept their structure integrity and crystalline phase

stability as a result of the absence of the nucleation sites,

which leads to a significantly improved DSSC efficiency.

These results reveal that the high-quality membrane

synthesis will bring about a fascinating future for this

kind of DSSCs assembled with optimized tube

configuration.

P3-01

GRIN-like Thin Dielectric Slab Lens through

Effective Index Engineering Henrik Melkonyan, Marcus S. Dahlem

Microsystems Engineering, Masdar Institute of Science and

Technology, Masdar City, Abu Dhabi, UAE

In this paper, we study a new form of GRIN-like thin

dielectric slab lenses. The proposed structure can be

described as a thin dielectric slab with sub-wavelength

gaps of air (or filled with other material with different

refractive index) of identical sizes. The concentration of

the number of holes varies radially and makes the

dielectric slab a smoothly graded-index media, which

will give focusing or diverging properties to the

dielectric slab. Another approach consists in increasing

or decreasing the size of the holes with the radial

position, which has a similar behavior as long as the

holes are kept small enough (sub-wavelength).


PGC2012


P3-02

Numerical Fitting of Ionization Coefficients for

APDs based on Ternary Materials Mamun Rabbani, Dipta Majumder, Farseem Mannan

Mohammedy

Department of Electrical and Electronic Engineering,

Bangladesh University of Engineering and Technology,

Bangladesh

The efficiency of the avalanche process in

Avalanche photodiodes depends on the Ionization

coefficients. Ionization coefficients are dependent on the

band-structure of materials. Ionization coefficients at

different temperatures and fields are predicted by an

analytical formula proposed by Okuto and Crowell. In

this work, we propose two different mean free paths in

two different field regions. These mean free paths, taken

as the fitting parameters, have been optimized at

different temperatures for InxGa1-xSb (x=0.06, 0.10,

0.12, 0.18), AlxGa1-xSb (x=0.05, 0.10) and InxGa1-xAs

(x=0.02) using Particle Swarm Optimization algorithm.

The present values have been compared with previous

values extracted from the formula proposed and

significant improvements have been achieved.

P3-03

Dispersion-flattened transmission based on

liquid-crystal-coated plasmonic subwavelength

structures Yanjun Liu, Guangyuan Si, Eunce S. P. Leong, Jinghua Teng

Institute of Materials Research and Engineering, Agency for

Science Technology and Research (A*STAR), Singapore

Recently, noble metallic annular aperture arrays

(AAAs) have drawn considerable attention due to their

peculiar properties and great potential for ultracompact

optical applications. AAAs have been experimentally

confirmed to have much higher peak transmission than

simple hole arrays with the same open area. Here, gold

AAAs with overlapped apertures are reported. We show

that different shapes of nanopillars can be formed by

controlling the inner and outer radii, thus affecting the

plasmonic properties of the nanostructures including

both localized surface plasmon resonances (LSPRs) and

surface plasmon polaritons (SPPs). By overlaying a

layer of photoresponsive liquid crystals onto these

plasmonic nanostructures, a pronounced optical

transmission with a broad top-flat passband is observed.

In addition, reversible optical tuning of the transmittance

is demonstrated. These unique properties make such

hybrid devices potentially useful for tunable broadband

optical filters.

P3-04

A microfabricated fibre optic sensor for

methane gas measurement in underground coal

mines

Mohammad Amanzadeh, Saiied M. Aminossadati, Mehmet S.

Kizil, Eion Sheridan, Warwick P. Bowen

School of Mechanical and Mining Engineering,CRCMining,

The University of Queensland, Australia

The mining industry requires a reliable system to

accurately and safely measure methane concentrations at

various locations in underground coal mines. This paper

aims to investigate the potential for an all-fibre optic

based methane sensor. Various types of all-fibre sensors

are studied and side drilled hollow core fibres have been

experimentally tested. The results show that hollow core

fibre has the potential to be developed as a methane

sensor and implemented in an underground coal mine

environment to accurately and safely measure methane

concentrations with acceptable response time and

accuracy.

P3-05

Cost Evaluation Analysis for Next Generation

Home Network Using Optical Fiber Shota Shimazaki, Dai Hanawa, Kimio Oguchi

Graduate School of Engineering, SEIKEI University

This paper provides a cost analysis of the next

generation home network. Traffic trends indicate that the

capacity of current home network systems will not

satisfy the data rates expected. Therefore, optical

technology will diffuse from FTTH into restricted areas

such as the home backbone network. We have already

proposed a physical configuration for the home network.

This paper uses a realistic physical network

configuration to elucidate the most economic

combination given three optical transmission media

(SMF, MMF, POF) and three topologies (single star,

double star, ring).

P3-06

Enhancement of Refractive Index Sensitivity for

Rectangular-microfiber Sagnac Loop Sensors Jie Li, Lipeng Sun, Yang Ran, Bai-ou Guan

Institute of Photonics Technology, Jinan University

We demonstrate an alternative method to further

improve the refractive index sensitivity of the device but

using the relatively thick microfiber. A multi-section

HB-fiber Sagnac interferometer is adopted. A section of

rectangular microfiber roles as the sensing arm whereas

a section of bow-tie fiber roles as the reference arm.

When a certain condition is satisfied between the two

arms, the sensitivity of the Sagnac loop sensor can be

enhanced significantly. In our experiment, the sensitivity

can be improved to about five times that of a single

microfiber, and the obtained maximum sensitivity -

34772nm/refractive-index unit (at refractive index of

1.333) is the highest to date, to the best of our

knowledge. Without specifically dealing with the




PGC2012


sensing fiber structure, the fabricated device may have

potential applications in chemical and biomedical areas.

P3-07

Microbubble-Enabled Photonic Crystal Fiber-

based Sensors Jun Long Lim, Dora Juan Juan Hu, Perry Ping Shum, Yixin

Wang, Emily Jianzhong Hao

RF & Optical Department, Institute for Infocomm Research,

Agency for Science, Technology and Research (A*STAR),

Singapore

A review of photonic crystal fiber sensors with

microbubble is presented. The work concentrate in three

sensing fields: the first reports on temperature sensing;

the second describes on strain sensing; the last part

focuses on refractive index sensing and bio-sensing. The

method of fabricating the microbubble is also briefly

discussed.

P3-08

Photonic crystals in proton-exchanged LiNbO3

waveguides for photonic applications Jun Deng, Wei Jia, Ching Eng Png, Aaron James Danner

Department of Electrical and Computer Engineering, National

University of Singapore, Singapore.

Lithium niobate (LiNbO3) is a widely used dielectric

material, and is important in integrated and nonlinear

optical devices. Photonic crystals realized in LiNbO3

have a great potential to reduce the size and increase the

functionality of integrated optical devices. In order to

accomplish these aims, fabrication know-how must be

mastered yet it remains relatively unchartered. In this

work we report the fabrication and optical

characterization of photonic crystal structures in

annealed proton exchanged (APE) LiNbO3 waveguides.

In our work, channel waveguides were fabricated by

photolithography patterning followed by immersing

LiNbO3 wafers in molten benzoic acid. A focused ion

beam (FIB) was used to mill photonic crystals into

LiNbO3 waveguides. Numerical simulation and

characterization of the transmission spectra were

performed to analyze the properties of various photonic

crystal structures. This photonic crystal waveguide is a

good candidate for further development of an

ultracompact, low-voltage LiNbO3 modulator.

P3-09

Metal-enhanced fluorescence in liposomes for

photothermal studies Elizabeth Mei Yin Lee, Derrick Yong, Xia Yu, Chan Chi Chiu

Singapore Institute of Manufacturing Technology, Singapore

Fluorescence has been used in many different fields

such as imaging and sensing. Fluorescence self-

quenching is a unique property that occurs at high

concentrations, resulting in reduced emission intensities.

This study aims to demonstrate the emission

enhancement of fluorescein encapsulated in liposomes.

The emission was observed to be enhanced when gold

nanoparticles were added to liposome-encapsulated

fluorescein, while quenching effect was still observed

for released fluorescein. These effects can then be

accounted for in future plasmonic photothermal effect

studies.

P3-10

Particle Swarm Optimization Algorithm for

Enhancing the Performance of Light Property

and Optical Buffer with Bragg-Like

Corrugation Ring-Shape-Hole Photonic Crystal

Waveguide Seyed Mohammad Mirjalili, Kambiz Abedi, Seyedali Mirjalili

Department of Electrical Engineering, Shahid Beheshti

University, Tehran, Iran

Over the last decade there has been a growing

interest in using Slot Photonic Crystal Waveguide

(SPCW) for designing optical buffers. Utilizing Bragg-

Like Corrugation and ring-shape-holes provides high

flexibility for performance tuning of optical buffer.

There are some parameters herein that have much effect

in optical buffer performance such as the width and

length of each part of Bragg-Like Corrugation, the

radiuses of holes, and pillars of the PCW. There is

currently little in the literature focusing on the

optimization of these parameters in spite of its

importance. In this work Particle Swarm Optimization

(PSO) is employed to fill this gap for the first time. The

objective is to maximize Normalized Delay-Bandwidth

Product (NDBP). Calculation results show that there is

significant improvement compared to the conventional

techniques, which is considered as a substantial

achievement in this field.

P3-11

Research on the FBG’s High Temperature

Sustainability Influenced by the Drawing

Process Shuqiang Zhang, Tu Feng

R&D Center, Yangtze Optical Fibre and Cable Co., Ltd, China

The numerous potential applications of UV-induced

fiber Bragg gratings (FBGs) in fiber optic sensing and

telecommunications have generated a significant interest

in this field in recent years. Based on the plasma

chemical vapor deposition (PCVD) process, the high Ge

(Germanium) and Ge/B (Germanium/Boron) co-doped

photosensitive fiber were developed. The photosensitive

fibers with different drwaing temperature and drawing

tension have been studied. Based on the experimental

results obtained from studies of several kinds of

photosensitive fiber on both the photosensitivity and the

temperature sustainability of the FBGs written into them,


PGC2012


the so-called cation hopping model has been used to

explain, in which the size of the cation responsible for

the temperature sustainability.

P3-12

Fabrication of Optical Fiber Gratings through

Focused Ion Beam Techniques for Sensing

Applications Jin Huang, Ammar Alqahtani, Jaime Viegas, Marcus Dahlem

Microsystems Engineering, Masdar Institute of Science and

Technology, Masdar City, Abu Dhabi, UAE

Fiber Bragg gratings and long-period fiber gratings

are widely used in optical communications and sensing

applications. These structures are fabricated by UV-

induced index changes along the core of a fiber, with

fine control over the grating period and refractive index

profile. Further flexibility and control can be achieved

with focused ion beam (FIB) techniques. These

techniques enable the fabrication of gratings with larger

index contrast and stronger interaction with

environmental samples (ideal for chemical sensing

applications). The sub-micron milling of the fibers

allows modulating the refractive index with air voids,

which can be filled with the sample fluid to be

monitored. In this work we explore the design and

fabrication of novel fiber grating configurations for

sensing applications, inscribed on single-mode fibers

using FIB. A single Fabry-Perot cavity is fabricated by

milling a hole through the fiber, as well as a long-period

grating based on a cascade of partially-etched-through

cavities.

P3-13

An Experimental Study on the Luminescence

Effects of POF-based Flexible Textile Using

Different Methods of Weaving and Electronic

Packaging Jin-Hee Yang, Joo-Hyeon Lee, Hyeon-Seong Cho, Sun-Hyung

Park, Seon-ah Khang

Department of Clothing & Textile, Yonsei University, Korea

Recently, several studies have been conducted on the

use of optical fibers in the field of photonic technologies.

In fact, photonic applications have been developed for

various functions including entertainment,

communications, and safety protection. However,

studies on the applications of flexible optical fiber to

smart photonic clothing and luminescence effects are

few. The present paper reports on the optimum condition

of luminescence effects and the uniform surface through

a experimental study of plastic optical fiber(POF)-based

flexible textile using different methods of weaving and

electronic packaging focused on the red right. For this

purpose, we first assessed the differences in the

luminance values based on whether etching of the POF-

based flexible textile was done and on whether a

reflective fabric backing was used. We also analyzed the

difference between the luminance values with and

without an optical lens on the light source.

P3-14

Performance Monitoring of Silicon Avalanche

Photodiode for Time-resolved Measurement of

Diffused Light over Temperature Ali Hasnain

Optical Bioimaging Laboratory, Dept. of Bioengineering,

National Univ. of Singapore

We examine the performance of Silicon photodiode

in a controlled thermal environment for the detection of

weak diffused light to study the changes in gain,

sensitivity and temperature coefficient of the photodiode.

The purpose of this study is to find a best environment

for silicon avalanche photodiodes to be used for diffuse

optical imaging. The study is carried out in conjunction

with a fast time-resolved diffuse optical imaging system.

P3-15

Analysis of ultracompact silicon electro-optic

modulator based on Cu-insulator-Si hybrid

plasmonic donut resonator Shiyang Zhu


We design and analyze an ultracompact silicon

electro-optic modulator operating at the 1550-nm

wavelengths. The modulator consists of a Cu-insulator-

Si hybrid plasmonic donut resonator coupled with a

conventional Si channel waveguide. A voltage is applied

between the ring-shaped Cu cap and the cylinder Cu

contact located at the center-donut to modify the

condition of the Cu-insulator-Si capacitor between

depletion and accumulation, thus leading to a resonant

wavelength shift of the resonator. In a modulator with 1-

um radius and 5-nm HfO2 gate oxide, numerical

simulation predicts an intensity extinction ratio of >6 dB

for a voltage swing of about 3 V, a switching energy of

about 50 fJ/bit, and a speed-of-response of >50 GHz.

P3-16

Silicon Avalanche Photodiode Array

Fabrication for Imaging Application Tok Chee Wei


Nowadays, SIPM have been developed by several

companies as they can potentially replace the traditional

photomultiplier tube (PMT). This paper demonstrates

the fabrication of silicon APD array for clinical imaging

applications. The purpose is to enhance SIPM

performance for higher specification and timing

resolution in scanning for earlier detection of cancer cell

in patients. The different metrology of the process

integration on CMOS method fabrication is illustrated


PGC2012


together for device optimization. The key features are to

be able to generate lower noise, faster response, and

higher detection efficiency to produce better

performance photo detector. Dark current testing brings

out some remarkable results and is able to achieve low

dark current (before breakdown) and operates linearly

after breakdown (Geiger mode). Device had undergone

blue light testing and results higher responses for 420nm

light, compared with 405nm laser. The output currents

of devices amplify approximately linearly from 10mW

to 60mW.

P3-17

Impact of Silicon Nonlinearities on the

Performance of Integrated Electronic-Photonic

Analog-to-Digital Converters Anatol Khilo, Franz Kaertner

Masdar Institute of Science and Technology, Abu Dhabi, UAE

The impact of optical nonlinearities in silicon on the

performance of integrated electronic-photonic analog-to-

digital converters is studied. It is shown that most

detrimental to the accuracy is two-photon absorption

nonlinearity, followed by free-carrier dispersion and

absorption. These nonlinearities can limit the accuracy

of electronic-photonic ADCs sampling at tens of GSa/s

to 8-9 effective bits. It is proposed to mitigate the impact

of silicon nonlinearities by using differential detection

and filter passband adjustment, which are shown to

improve the accuracy by 1-2 or more effective bits. As a

result, it is predicted that integrated electronic-photonic

ADCs with tens of GHz of bandwidth and more than 10

effective bits are possible.

P3-18

Incoherent Soliton Fission Driven

Supercontinuum Generation Pumped by

Partially Coherent Light Edmund Kelleher, Miro Erkintalo, John Travers

Femtosecond Optics Group, Department of Physics, Blackett

Laboratory, London, UK

For low degrees of partial coherence soliton fission-

based dynamics rather than modulation instability are

shown to be the driver of continuous-wave

supercontinuum generation. Intensity fluctuations can be

described in terms of an effective soliton order, and an

optimum degree of partial pump coherence for strong

fission evolution is outlined.

P3-19

Detection of Bladder Cancer related DNA

Biomarkers Using Silicon Microring Resonators Yong Shin, Promoda Perera, Kyung Woo Kim, Mi Kyoung

Park


DNA biomarkers have been demonstrated as an

important diagnostic factor for detection of early stage in

human cancers. To date, many genetic alterations of

biomarkers have been identified in urothelial cell

carcinoma of the bladder. Silicon based microring

resonators which are essentially refractive index-based

optical sensors that provide highly sensitive, label-free,

real-time, and multiplexed detection of biomolecules

near the sensor surface by monitoring a wavelength shift.

In this study, we present a DNA sensor based on silicon

microring resonators to detect DNA biomarkers, which

used as targets of bladder cancer detection. We show the

mutant types probes of FGFR3 (R249C) and HRAS

(G13R) genes can completely capture the mutant type

targets (about 160bp) compared to non specific target

probe by using microring resonators. Therefore, our

sensor can be used to detect the DNA biomarker for

early detection of bladder cancers.

P3-20

A New Tunable Photonic Crystal Electro-optic

Device Kambiz Abedi, Pooria Ghasemi

Department of Electrical Engineering, Faculty of Electrical and

Computer Engineering, Shahid Beheshti University, Iran

In this paper, a new tunable photonic crystal electro-

optic device is proposed and analyzed. In the proposed

device, each period (or unit cell) of the photonic crystal

lattice is composed of three different materials as

ABAB‘A in which A, B and B‘ layers are materials such

as GaAs, LiNbO3 and KH2PO4, respectively. The

refraction indices of the B and B‘ layers are changed by

applying voltage. We employ the transfer matrix

approach to obtain the transmittance of the photonic

crystal device, and transmission spectra are drawn for a

different number of unit cells N = 10, 20 with

consideration of TE and TM modes. We observe from

these transmission spectra that the band width at the

high frequencies region is broadened by means of an

increase in applied voltage.

P3-21

Multiplexing of LPFG Resonant Wavelengths

for Abnormal Reaction Detection in Large-Scale

Plants by Distributed High Temperature

Monitoring Yutaka Katsuyama, Saburo Kasahara, Yutaka Tokunaga,

Osanori Koyama

Graduate School of Engineering, Osaka Prefecture University,

Japan

Five resonant wavelengths could be multiplexed

successfully by writing long-period gratings (LPGs)

with different pitches. A preliminary distributed

temperature monitoring experiment was conducted, and

it was estimated that separation between 2 adjacent

resonant peaks was 23.7 nm, even when the temperature


PGC2012


difference between 2 adjacent LPGs was 100 ºC. This

separation is large enough to distinguish the resonant

wavelengths individually. The results clarified that this

multiplexing approach enables the LPFG to detect a

local high temperature caused by an abnormal reaction

inside in a large-scale plant.

P3-22

Characteristics of Suspended-Core Fiber

Interferometer: Modal Analysis Jun Long Lim, Dora Juan Juan Hu, Dongyao Cui, Seongwoo

Yoo, Perry Ping Shum, Wei Loh

RF, Antenna & Optical Department, Institute for Infocomm

Research, Agency for Science, Technology and Research

(A*STAR), Singapore

Suspended-core fiber (SCF) represents a promising

class of microstructured optical fibers for sensing

applications. In this work, we present a thorough modal

analysis of the SCF based modal interferometer which is

constructed by splicing 50 mm of SCF to single mode

fiber at both ends. The measured transmission spectrum

exhibits three-beam interference-like spectrum. In the

modal analysis, we investigate the intermodal coupling

between the fundamental and higher-order modes, as

well as the coupling between the orthogonal

polarizations in the fundamental modes. In comparison

with the typical two-mode interferences in photonic

crystal fiber interferometers, the measured spectrum of

SCF interferometer has distinctively sharper spectrum

for high resolution and high dynamic range application.

P3-23

Gold Nanoparticles Enhanced Fluorescence in

Organic Lighting Emission Diodes Bo Liu, Kou Chen Liu, Huang Qi Xiao, Cheng Han Wu, Chao

Sung Lai

Chang Gung University

Gold nanoparticles in organic light emitting diodes

could produce high electric near field around the metal

by local surface plasmons if the OLEDs emission

spectrum covers the gold nanoparticles absorption

spectrum. Internal quantum efficiency could be

enhanced according to the Fermi golden rule when field

is available to fluorophor. But the luminous efficiency

will decline in case distant between gold nanoparticles

and emission layer is short due to the exciton quenching

and energy transfer effect. In our study we use the

bottom emission structure and au nanoparticles were put

into the middle of anode(ITO) and hole injection

layer(PEDOT:PSS). the absorption spectrum of gold

nanoparticles cover the emission spectrum. Not

surprisingly, the absorption intensity with gold

nanoparticles is higher than the device without. However

in out experiment the efficiency enhanced more than 50%

compare with the reference. So we infer that the

efficiency enhanced by localized electric field enhance.

P3-24

Buffer-Based Dynamic Provisioning for Sliding

Bulk Transfer Requests in WDM Optical

Networks Min Zhu, Wen-De Zhong, Shilin Xiao



We present a new model for dynamically

provisioning sliding bulk transfer requests in data-

intensive applications over wavelength-division

multiplexing (WDM) optical networks. This model can

provide more flexibility for the users and serve them

better. It allows the users not only to specify the sizes of

submitted bulk files, but also to make decisions on the

minimum bandwidth guarantee (MBG) and the time

redundancy (TR) of the sliding window. We formulate

the problem into two sub-problems (time scheduling,

routing-wavelength assignment (RWA) and bandwidth

allocation (BA)) and prove it to be NP-complete. We

propose a buffer-based provisioning (B2P) architecture

to deal with the problem. The approach first temporarily

buffers those blocked requests at their arrival times and

then attempt to provision these requests later once new

resources become available. The effectiveness and the

feasibility of the proposed approach are demonstrated by

the simulations.

P4-01

Modeling of a Type-II Antimonide based

Superlattice for Novel Optical Switching

Applications Muktadir Rahman, A. S. M Shamsur Rouf, Farseem Mannan

Mohammedy

Bangladesh University of Engineering and Technology, Dhaka,

Bangladesh.

In recent times, the Type-II InAs/GaSb Superlatttice

has been opted as a viable replacement for HgCdTe

based photodetectors as the band structure of these

devices can be tailored. Significant progress has been

made and ongoing research is being conducted in the

growth and characterization of these devices. We present

the model of such a device with experimentally verified

dimensions and parameters. The Transfer Matrix

Method (TMM) with Airy function approximations has

been adopted to represent the wave function solution

under zero bias and non-zero bias respectively. Cutoff

wavelength of 10μm range was achieved. These devices

have the added advantage of tunability with respect to

well width and bias voltages and have attractive

applications in optical switching.

P4-02

Microlasers and Optical Sensors based on

Flexible Polymer Fibers Van Duong Ta, Rui Chen, Handong Sun


PGC2012


School of Physical and Mathematical Sciences, Nanyang


Whispering gallery cavities have attracted increasing

research attention as a fundamental block for study of

light-matter interaction and wide range of applications

such as microlasers, active filters, and ultrahigh sensitive

sensors. Here we report optically pumped multi and

even single frequency whispering gallery mode (WGM)

lasing from dye-doped microfibers and its application in

optical sensing. The fibers fabricated by a direct drawing

technique have a smooth surface and tunable size from

around 100 to 5 μm. Lasing mechanism and size-

dependent characteristics are carefully studied. The

results show agreements with theoretical prediction and

numerical simulations. Moreover, the existence of

evanescent waves of WGM near the fiber‘s surface is

applied for refractive index sensing with sensitivity as

high as 300 nm per refractive index unit. Owing to the

simplicity, cost-effectiveness, and excellent performance,

flexible polymer fibers are important for photonic

community and construction of optoelectronic

components.

P4-03

The role of cold sonicated development

scenarios for achieving ultradense and high

aspect ratio for optical metamaterial

applications Landobasa Y. M. Tobing, Liliana Tjahjana, Dao Hua Zhang

Nanyang Technological University, Singapore

We present a systematic study of different sonicated

cold development scenarios for the purpose of achieving

high density optical metamaterial. High aspect ratio sub-

15-nm dots at pitch as small as 40 nm are successfully

demonstrated for 110-nm thick resist at low exposure

dose. Some of the key results include sub-15-nm gold

nanodots at 40-nm pitch and high density optical

metamaterial (with only ~30nm separation between two

adjacent resonators).

P4-04

Performance Comparisons between Lightpath

and Light-tree Schemes in Dynamic Multicast

Traffic Grooming Process Xiaojun Yu, Gaoxi Xiao, Tee-Hiang Cheng



In this paper, we firstly present a brief survey of the

various existing algorithms for dynamic multicast traffic

grooming, followed by a short discussion on the pros

and cons of lightpath and lightp-tree schemes

respectively. By conducting extensive numerical

simulations, we carefully compare the blocking

performances of these two types of schemes. Our study

results show that, in most cases, the lightpath-based

methods outperform the light-tree based ones, typically

with only a slightly higher consumption of O/E/O

resources. We provide an explanation to such interesting

observations. Effects of the ratio of multicast traffic to

overall network traffic and the average number of

destinations of each multicast request are also studied.

P4-05

Differential mode group delay measurement for

few-mode fiber using phase-sensitive intermodal

spectral domain interferometer Chan-Young Kim, Il-Shin Song, Tae-Jung Ahn

Dept. Of Photonic Engineering, Chosun University, Korea

Mode division multiplexing (MDM) communication

technique which provides multi-channels corresponding

to the excited modes in a few-mode fiber has been

recently reported. Intermodal crosstalk as a main

drawback in the MDM communication was suppressed

by the use of multiple-input multiple-output digital

signal process. For the crosstalk suppression technique,

intermodal delays should be close to zero. To monitor

the group delay of the each mode, a very expensive

high-speed electric-signal analysis instrument (i.e. high-

speed sampling oscilloscope) is required. In the study,

we propose the differential mode group delay (DMGD)

measurement for a few-mode fiber used in MDM. The

measurement technique is based on phase-sensitive

optical spectral domain reflectometry providing good

performances in terms of high resolution and cost

efficiency.

P4-06

Investigation of Optical Gain in AlGaAs/GaAs

Symmetric Double Semi-Parabolic Quantum

Well Laser Alireza Keshavarz, Naser Zamani, Farzin Emami

Department of Physics, College of Science, Shiraz University

of Technology

The optical gain in symmetric double semi-parabolic

quantum well laser is calculated for typical

GaAs/AlxGa1-xAs. The effects of material parameters

such as thickness of the barrier and width of the wells,

Al composition and density of the carriers as well as

external parameters such as temperature and pressure on

the optical gain coefficient of this nano structure are

investigated. Finally, we introduce the optimum

structure of quantum well to obtain the maximum optical

gain, which can be useful for quantum well laser

designing.

P4-07

Effect of a weak longitudinal modulation in

refractive index on transverselocalization of

light in 1D disordered waveguide lattices Somnath Ghosh, Ravi K. Varshney, Bishnu P. Pal


PGC2012


Physics Department, Indian Institute of Technology Delhi,

India

We report the enhancement of the effect of

transverse localization of light (TL) in presence of a

weak longitudinal modulation of refractive index in

disordered waveguide lattices. In our chosen lattices,

tunneling inhibition along length favors to achieve the

diffraction-free propagation along with the simultaneous

presence of transverse disorder. Results will be useful to

tune the threshold value of disorder to achieve localized

light.

P4-08

Effect of a defected core for squeezed photonic

crystal fiber So Eun Kim, Chul Sik Kee, Chung Ghiu Lee

Nanophotonics Laboratory, Advanced Photonics Research

Institute, Gwangju Institute of Science and Technology, Korea

In this paper a smaller sized elliptical air hole in the

core is introduced as a defected core for the squeezed

photonic crystal fiber (SQPCF) which has a isosceles

triangular lattice in order to show the effect of a defected

core to the properties of polarization and dispersion. The

present design has the asymmetry in both fiber core and

the cladding region by elliptical air holes and isosceles

triangular lattice. The role of an elliptical defected core

in the SQPCF is not only to enhance the flatness and

negative value of chromatic dispersion but also to

increase the value of birefringence. In our simulation,

the plane wave expansion method and full-vector finite

element method (FEM) with the perfectly matched layer

(PML) boundary condition are applied, which have been

most popular and accurate methods to investigate the

eigen-mode problems of guided modes in PCFs.

P4-09

Performance Evaluation of VCSEL ONU Using

Energy-Efficient Just-In-Time Dynamic

Bandwidth Allocation Algorithm Maluge Pubuduni Imali Dias, Elaine Wong

Department of Electrical and Electronic Engineering, The

University of Melbourne, Australia

We previously proposed an energy-efficient Just-In-

Time based dynamic bandwidth allocation algorithm for

the 10 Gbps Ethernet Passive Optical Network. The

algorithm exploits the capability of the Vertical-Cavity

Surface-Emitting Optical Laser based Optical Network

Units to operate in sleep or doze mode during its idle

time.The algorithm takes into account the upstream

trafï¬•c demand at the Optical Network Units in

determining the bandwidth allocated to each Optical

Network Unit during each cycle, thus eliminating

possible collisions in the network. In this work we

evaluate the performance of the Vertical-Cavity Surface-

Emitting Laser and the Distributed Feedback Laser

based Optical Network Units under the proposed

algorithm. The simulation results indicate that the

Vertical-Cavity Surface-Emitting Laser based Optical

Network Unit outperforms the Distributed Feedback

Laser based Optical Network Unit in terms of the energy

efficiency using the proposed algorithm.

P4-10

A Novel Multimode Fiber for Distributed

Temperature Sensing based on Anti-stokes

Raman Scattering Jiangtao Guo, Tao Xia, Rui Zhang, Xiaobing Li

State Key Laboratory of Optical Fiber and Cable Manufacture

Technology, R&D center, Yangtze Optical Fibre and Cable

Company Ltd, China

In order to study the influence of temperature

sensing fiber on distributed temperature sensing, a

specific experimental setup was constructed. A novel

multimode fiber has been fabricated by plasma chemical

vapor deposition process. Relative index profile and

schematic cross-section of the novel multimode fiber

were available. Higher content of Germanium doping in

the fiber core is propitious to increase numerical

aperture, which will enhance the acquisition capability

of backscattering light signal. After hydrogen ageing,

the signal attenuation coefficient of sample fiber is 0.29

~ 0.35 dB/km or less in the wavelength range of 1450 to

1650 nm, which is measured by cut-back method. In the

experimental system, the backscattering intensity of our

novel multimode fiber is 2 ~ 3 times higher than that of

conventional multimode fiber.

P4-11

Linear and nonlinear optical properties of

quantum well with position-dependent effective

mass Gholamreza Honarasa, Alireza Keshavarz, Naser Zamani

Department of Physics, College of Science, Shiraz University

of Technology

Optical properties of quantum well nanostructure for

typical GaAs/AlxGa1-xAs are investigated in a new

approach. By using the point canonical transformation

method and numerical solution of the Schrödinger

equation, the energy levels and wave functions of

electrons in the quantum well confinement potential are

calculated. Then, the effect of position-dependent

effective mass on the intersubband optical absorption

coefficient and the refractive index changes of the

quantum well calculated by compact density matrix

method, are studied. Results are compared with the case

of constant mass. Our results show that with considering

spatially varying electron effective mass linear and

nonlinear optical properties increases and shifts toward

the lower energies. Researches on this matter open a

new field in fundamental and applied physics, and also


PGC2012


offer a wide range of potential applications for photonic

devices.

P4-12

Grating Assisted Light Coupling between Long-

Range and Short-Range Surface Plasmon

Polariton Modes Qing Liu, Jack Sheng Kee, Mi Kyoung Park


We propose a new method of exciting short-range

surface plasmon polariton (SR-SPP) mode with a long-

rang surface plasmon polariton mode, both of which are

supported by a thin metal stripe embedded in a dielectric,

using a double-sided anti-symmetric grating formed on

the metal stripe. The effects of the metal stripe thickness,

the grating corrugation depth and the number of grating

periods on the transmission and reflection spectrum are

investigated numerically, and it is verified that light can

be efficiently coupled to SR-SPP mode with the grating.

The spectra for a metal stripe with a single-sided grating

and a double-sided symmetric grating are also presented

and discussed.

P4-13

Breast thermography and pseudo-coloring

presentation for improving gray infrared images Zahra Zahedi

Science department (Electro-Optic) Malek Ashtar University

of technology

The role of infrared imaging in early detection of

breast cancer as an adjunct tool to mammography has

been proved. In this way, pseudo-coloring of

thermogram is one of the important factors for accurate

diagnosis. In this research we offer comparing some

common pseudo-coloring algorithms. A nonlinear

function transform for pseudo-coloring of infrared breast

images is proposed, and its efficiency is shown by

experience.

P4-14

Azobenzene polymer waveguide For UV sensor Tae-Jung Ahn, Il-Shin Song, Chan-Young Kim, A-Ram Han,

Jong Su Yoo, Seong Yun Lee, Hyun-Kyoung Kim

Dept. Photonic Engineering, Chosun Univ. Gwangju, Republic

of Korea

Recently, ultraviolet (UV) light has been considered

in many industrial applications such as photolithography,

UV watermark for security, adhesives and coatings.

Thus, it is necessary to remotely monitor the level of UV

radiation in real time because of the fact that UV light is

harmful to the human skin and eyes. Very recently we

have reported a polymer blend system based on

azobenzene-carrying poly (vinylether) and poly

(carbonate) for rapid photomechanical switching by UV

illumination. The azobenzene-containing polymer

material illuminated by UV light induces a certain

amount of strain on the silica-based fiber Bragg grating

(FBG), which increases its grating period in accordance

with its center wavelength. In the paper, we proposed

new azobenzene polymer waveguides for the UV sensor

applications and analyzed the waveguide performances

such as optical loss, absorption spectrum, optical

scattering, and excited modes. The developed UV-

sensitive waveguide can be applied to UV sensor (e.g.

the polymer FBG sensor).

P4-15

Novel All-optical Wavelength Conversion with

Ultrabroad Conversion Tunability and

Modulation-transparency Gong Yongkang

Faculty of Advanced Technology, University of Glamorgan,

CF37 1DL, UK

We present a novel all-optical wavelength

conversion (AOWC) scheme supporting modulation

format independency without requiring phase matching.

The new scheme is named ―spoof‖•four wave mixing

(SFWM) and in contrast to the well-known FWM,

where the induced dynamic refractive index grating

modulates photons to create a wave at a new frequency,

the SFWM is different in that the dynamic refractive

index grating is generated in a nonlinear Bragg Grating

(BG) to excite additional reflective peaks at either side

of the original BG bandgap in reflection spectrum. This

fundamental difference enable the SFWM to avoid the

intrinsic shortcoming of stringent phase matching

required in the conventional FWM, and allows AOWC

with modulation format transparency and ultrabroad

conversion range, which represents a major advantage

for next generation of all-optical networks.

P4-16

Occurrence of the Si Particles and Reducing

Method as Using the Excimer UV Kim YongWoo

Samsung Institute of Technology, SSIT, 24 San Nongseo-dong

Giheung-gu, Yongin-city, Gyeonggi-do, KOREA

The Excimer (combination word of excited state of

dimer) UV is the most utilized pre-cleaning process in

TFT manufacturing system. It removes many organic

impurities on the surface of the TFT Glass as using the

Ultra-Violet. Through the Excimer UV lamp, if the UV

of 172 nm wave is exposed by 172nm, the impurities

change into the hydrophile properties. On the contrary,

the Excimer UV occur the different micro by-products,

called the Si particles. Those make the defective

products like GD-Short, DATA-Open and etc. For the

improvement of the weakness point, we studied the

effectiveness of the periodical precision cleaning which

is the most existed in the N2 Diffuser of Excimer UV.


PGC2012


P4-17

Design of broadband dispersion compensating

octagonal photonic crystal fiber for optical

communication system Md. Selim Habib, M. A. G. Khan, Md. Samiul Habib, S. M. A.

Razzak

Department of Electrical & Electronic Engineering, Rajshahi

University of Engineering & Technology, Bangladesh

This paper presents a novel octagonal photonic

crystal fiber for dispersion compensation covering the

entire S+C+L wavelength bands. The finite element

method with perfectly matched absorbing layers

boundary condition is used to investigate the guiding

properties. This kind of fiber has broadband large

negative chromatic dispersion, and the chromatic

dispersion coefficient varies from –816 to –1200

ps/(nm·km) in the measured wavelength range of 1460–

1640 nm, and relative dispersion slope (RDS) close to

that of a conventional single-mode optical fiber (SMF).

In addition to this, residual dispersion, effective area,

confinement loss, dispersion slope, and dispersion

compensation ratio of the proposed PCF are also

reported and discussed.

P4-18

Analysis of Motion-Induced Radiation of

Charged Particles Yangjie Liu, Ricky Ang



Cherenkov radiation has hinted people to unfold

energy transfer from kinetic energy of moving electrons

to electromagnetic waves, evanescent or traveling.

However, such dissipative motion-induced radiations

require particles to move faster than light in medium or

to encounter velocity transition to pump energy. An

emergent Transformation Optics strategy provides

possibility to manipulate light flow almost arbitrarily.

Therefore such a curved electromagnetic space becomes

an energy-pumping candidate from motion-induced

radiation of particles. Inspired by a method to detect

cloak by observing radiation of a fast-moving electron

bunch going through it by Zhang et al., we attempt to

derive another transition radiation of moving electron

bunch going through a differently curved geometry of

light: Maxwell‘s fish-eye, which in principle provides

unlimited resolution as a perfect imaging lens. Our

calculation may pave the way to investigate new scheme

of transferring energy from electron to radiation.

P4-19

Performance of indoor optical wireless

communication system employing convolutional

encoding Yeon-Mo Yang, Soeun Kim, Chung Ghiu Lee

Department of Electronic Engineering, Kumoh National

Institute of Technology, Korea

The visible light communication attracts much

attention as an option for an indoor mobile

communication technology. It utilizes illumination light-

emitting diodes as a signal source and photodiodes in

visible range as a signal detector. An indoor optical

wireless communication system using convolutional

coding is demonstrated by computer simulation. The

data stream is coded into a convolutional code and then

modulates illumination LEDs. In this paper, we consider

the convolutional encoding with k=1, n=2, K=3. In the

receiver, a photodiode senses the optical signals

transmitted from the LED transmitter and the received

electrical signal is amplified. And then, the digital data

is decoded The communication performance parameters

are analyze. The block diagram of the coded optical

wireless communication system is described. The

detailed description of optical devices is included. The

convolutional encoding/decoding processes are

explained with the structure of the encoder. The BER

characteristics is analyzed.

P4-20

Light Through Nanocrescent Arrays

Xiaoxiao Jiang, Qiongchan Gu, Hailong Liu, Linjuan Yang, Guangyuan Si


Qinhuangdao, China

Surface plasmons provide the unique ability of

controlling light at the subwavelength scale with various

nanostructures, such as clusters, shells, disks, rings, and

rods. Many different kinds of plasmonic devices have

been reported so far, including modulators,

interferometers, switches, polarizers, and absorbers.

Light scattering by two dimensional plasmonic crystal

structures has been studied thoroughly using FDTD and

FEM methods. With the development of nanoscience

and nanotechnology, it becomes possible and important

to investigate optical properties of nanoscaled objects.

The near-field energy intensity and the total cross-

section can be enhanced significantly for specially

designed nanostructures. In this work, we show

fabrication of nanocrescent arrays with different sizes.

We also investigate the optical response of such

nanocrescent arrays and perform FDTD calculations.

Experimental results agree well with simulations. Our

approach may find extensive applications in

nanophotonics and integrated optics.

P4-21

Light Property and Optical Buffer Performance

Enhancement Using Particle Swarm

Optimization in Oblique Ring-Shape-Hole

Photonic Crystal Waveguide


PGC2012



Department of Electrical Engineering, Shahid Beheshti

University, Tehran, Iran

Oblique Ring-Shape-Hole Photonic Crystal

Waveguides (ORSHPCW) is a popular structure in

designing optical buffers attracted many attentions

recently. There are some parameters such as the radiuses

of holes and pillars in the first two rows adjacent to

defect that have significant effects on slow light

properties. Consequently, one of the promising methods

for effectively slowing the light speed down and

controlling dispersion is to optimize these parameters,

which is the motivation of this study. Particle Swarm

Optimization (PSO) algorithm is one of the best

proposed heuristic optimization algorithms in Artificial

Intelligence applied to many engineering problem. In

this work, this algorithm is employed to find the best

values of the aforementioned radiuses for maximizing

Normalized Delay-Bandwidth Product (NDBP) of

ORSHPCW structure as the first systematic optimizer.

Calculation results show that there is 30% improvement

compared to the previous works, which is considered as

a substantial achievement in this field.

P4-22

Fabrication of Nanoarms and Nanotips via

Focused Ion Beam Milling Xiaoxiao Jiang, Qiongchan Gu, Jiangtao Lv, Yanjun Liu,

Guangyuan Si, Hongjun Duan, Zhenhe Ma, Fengwen Wang,

Jinghua Teng


Qinhuangdao

Thus far, manufacture of photonic nanostructures is

mainly realized by using electron-beam lithography

(EBL) and focused ion beam (FIB). Each method has its

own advantages and limitations. For example, FIB is

capable of defining nanostructures on almost all kinds of

materials with ultra-small gaps and ultra-high aspect

ratios but limited mainly by re-deposition effects which

result in non-vertical sidewalls. Different from FIB,

EBL can define patterns only in electron resists.

Therefore, it is normally combined with lift-off or dry

etching to transfer patterns. The FIB instrument is a

useful tool based on ion beam–solid interactions.

Equipped with a liquid ion source, it can define patterns

directly without using masks. Here, we demonstrate the

fabrication of nanoarms and nanotips using FIB

lithography. Arbitrary-shaped nanodevices can be

readily realized using similar methods. All patterns are

fabricated with good uniformity. Our approach may find

new opportunities for nanophotonics and integrated

optics.

P4-23

A Novel Miniature Magnetic Field Sensor Based

on Faraday Effect Using a Heterodyning Fiber

Grating Laser Linghao Cheng, Jianlei Han, Zhenzhen Guo, Long Jin, Bai-Ou

Guan


An orthogonally polarized dual-frequency fiber

grating laser is exploited to sense magnetic field in this

paper. It shows that the fiber grating laser is sensitive to

axial magnetic field through Faraday effect, which

results in the beat frequency shift after photodetction of

the laser output. The axial magnetic field induces a

circular birefringence into the laser cavity, which

combines with the intrinsic linear birefringence of the

laser cavity to form an elliptical birefringence. The

elliptical birefringence is then translated to the beat note

frequency through heterodyning between the two

orthogonally polarized laser outputs after photodetection.

Because the fiber laser is as short as less than 2 cm, a

novel miniature magnetic field sensor is then

demonstrated.

P4-24

Microfiber Fabry-Perot Sensors Inscribed by

193nm excimer laser Jie Li, Xiang Shen, Lipeng Sun, Bai-ou Guan


We investigate a FP interferometer that is

manufactured directly in the micro-size fiber by the use

of a 193nm excimer laser exposure for the first time, to

our knowledge. Compared to the counterpart in

conventional optical fibers, a much strong polarization

dependence and large dispersion of the interference

fringes are observed. The wavelength dependency on the

external strain, temperature, and refractive index are

measured and analyzed. Our research results are useful

for future applications of the devices.







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