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Programme & Abstracts
Photonics
Global
Conference @SINGAPORE
2012
13-16 December 2012
Resorts World Convention Centre Singapore
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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.
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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
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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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Programme & Abstracts 3
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
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4 Programme & Abstracts
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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Programme & Abstracts 5
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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6 Programme & Abstracts
Conference Venue Floor Plan
Opening Ceremony
Compass Ballroom, Basement 2
Technical Sessions
Function Rooms, Level 1
Exhibition & Poster
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Programme & Abstracts 7
III. Conference Programme
i. Programme At-a-Glance
ii. Short Courses
iii. Keynote Speakers
iv. Workshops
v. Technical Programme
vi. Abstract
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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
Semiconductors and Optoelectronic
Devices II
Optical Probes in Biophotonics
Nanostructures and Applications
Optical Fibre Technology II
Workshop on Disruptive Photonic
Technologies II
Workshop on Fabrication of Special
Fibres and Applications II
Optical Transmission I
Quantum Cascade Lasers II
12:30-14:00 Lunch Session
14:00-15:45 Session 2-3
Nanodevices and Biosensors
Bioimaging and Sensing III
Optoelectronics Devices
Optical Fibre Technology III
Workshop on Disruptive Photonic
Technologies III
Workshop on Fabrication of Special
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
Workshop on Fabrication of Special
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
Semiconductors and Optoelectronic
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
12:30-14:00 Lunch 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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Programme & Abstracts 9
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.
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10 Programme & Abstracts
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
Optoelectronics Research Centre,
University of Southampton, UK
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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Programme & Abstracts 11
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)
Session I (13:15 -- 15:00, 14 Dec 2012, Room Virgo 2)
Chair: John Dudley
Speakers: Daniel Gauthier (Duke University, USA)
Anna Peacock (University of Southampton, UK)
Alessia Pasquazi (INRS-EMT, Canada)
Session II (10:45 -- 12:30, 16 Dec 2012, Room Virgo 2)
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)
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12 Programme & Abstracts
Workshop on Fabrication of Special Fibres and Applications
Organizers: Kyounghwan (Ken) Oh (Yonsei University, South Korea)
Seongwoo Yoo (Nanyang Technological University, Singapore)
Session I (08:30 -- 10:30, 15 Dec 2012, Room Virgo 2)
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)
Session II (10:45 -- 12:15, 15 Dec 2012, Room Virgo 2)
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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Programme & Abstracts 13
v. Technical Programme
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Programme & Abstracts 14
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
University of Southampton, UK
Session 1-2 (Date: 14.12.2012)
Compass Ballroom
10:45--11:30 Keynote Speaker
From Metamaterials to Metadevices
Prof. Nikolay I. Zheludev
University of Southampton, UK
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
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15 Programme & Abstracts
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
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Programme & Abstracts 16
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
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PGC2012
17 Programme & Abstracts
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
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PGC2012
Programme & Abstracts 18
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
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PGC2012
19 Programme & Abstracts
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)
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PGC2012
Programme & Abstracts 20
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
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PGC2012
21 Programme & Abstracts
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
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PGC2012
Programme & Abstracts 22
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)
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PGC2012
23 Programme & Abstracts
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
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PGC2012
Programme & Abstracts 24
(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
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PGC2012
25 Programme & Abstracts
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
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PGC2012
Programme & Abstracts 26
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
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PGC2012
27 Programme & Abstracts
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
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PGC2012
Programme & Abstracts 28
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
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PGC2012
29 Programme & Abstracts
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
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PGC2012
Programme & Abstracts 30
(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
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PGC2012
31 Programme & Abstracts
(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
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PGC2012
Programme & Abstracts 32
(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
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PGC2012
33 Programme & Abstracts
(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
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PGC2012
Programme & Abstracts 34
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
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PGC2012
35 Programme & Abstracts
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
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PGC2012
Programme & Abstracts 36
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-
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PGC2012
37 Programme & Abstracts
(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
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PGC2012
Programme & Abstracts 38
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
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PGC2012
39 Programme & Abstracts
(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
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PGC2012
Programme & Abstracts 40
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
(c12a308) Invited (cancelled)
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
(c12a340) Invited (cancelled)
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
(c12a331) Invited (cancelled)
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
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PGC2012
41 Programme & Abstracts
(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
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PGC2012
Programme & Abstracts 42
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
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PGC2012
43 Programme & Abstracts
(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
Seyed Mohammad Mirjalili, Kambiz Abedi, Seyedali Mirjalili
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
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PGC2012
Programme & Abstracts 44
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
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45 Programme & Abstracts
(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)
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Programme & Abstracts 46
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.
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47 Programme & Abstracts
vi. Abstracts
Only the first affiliation of each manuscript
is included in the abstract book. For more
information, please refer to the CD
proceeding.
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Programme & Abstracts 48
ORAL PAPER ABSTRACTS
PGC2012
Keynote Speaker
What Next for the Optical Internet? Prof. David N. Payne
Optoelectronics Research Centre,
University of Southampton, UK
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
Optoelectronics Research Centre,
University of Southampton, UK
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.
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
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49 Programme & Abstracts
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
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Programme & Abstracts 50
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
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51 Programme & Abstracts
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
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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
Nanyang Technological University
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.
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53 Programme & Abstracts
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
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Programme & Abstracts 54
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.
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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.
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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)
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57 Programme & Abstracts
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
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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
Institute of Microelectronics, A*STAR
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
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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
Technological University, Singapore
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
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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
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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
Nanyang Technological University
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
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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
Nanyang Technological University
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
Indian Institute of Technology Delhi
We present complex transversely
quasicrystallographic 3D chiral lattices combining the
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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
School of Electrical and Electronic Engineering, Nanyang
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,
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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.
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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
Indian Institute of Technology Delhi
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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School of Electrical and Electronic Engineering, Nanyang
Technological University
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
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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.
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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-
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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
Nanyang Technological University
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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
Nanyang Technological University
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
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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
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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,
National University of Singapore
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
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73 Programme & Abstracts
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
Nanyang Technological University
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
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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
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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
National University of Singapore
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
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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
School of Electrical and Electronic Engineering, Nanyang
Technological University
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 ~15°
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.
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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.
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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.
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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
µm, 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
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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
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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.
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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
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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
Nanyang Technological University
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
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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
School of Electrical and Electronic Engineering, Nanyang
Technological University
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
Nanyang Technological University
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
Nanyang Technological University
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
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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
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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-
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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.
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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
Nanyang Technological University
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
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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,
Shanghai Jiao Tong University
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
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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
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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
Institute of Microelectronics, A*STAR, Singapore
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
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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.
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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
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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
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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
Institute of Microelectronics, A*STAR (Agency for Science,
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
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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
Technological University, Singapore
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.
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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
Shanghai Jiao Tong University
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
Nanyang Technological University
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.
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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
University of Southampton
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,
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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
Institute of Microelectronics, A*STAR
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.
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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
Nanyang Technological University
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
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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
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Programme & Abstracts 102
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
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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
ocean’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
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Programme & Abstracts 104
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.
PGSC Industry Session
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.
PGSC Industry Session
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
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VirtualLab™ features with customer originated modules
in C# and MATLAB®.
PGSC Industry Session
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 μm. 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
University of Southampton
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
Institute of Microelectronics, Singapore
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
Institute of Microelectronics, Singapore
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
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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
Nanyang Technological University
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
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109 Programme & Abstracts
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
Nanyang Technological University
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
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Programme & Abstracts 110
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
Institute of Physics, Hanoi
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.
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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
School of Electrical and Electronic Engineering, Nanyang
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
Shanghai Jiao Tong University
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
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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
Institute of Physics, Hanoi
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-
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Programme & Abstracts 114
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
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115 Programme & Abstracts
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.
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Programme & Abstracts 116
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
School of Electrical and Electronic Engineering, Nanyang
Technological University, Singapore
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.
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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
Institute of Microelectronics, A*STAR (Agency for Science,
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 1.1εm 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.
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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
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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
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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
Nanyang Technological University
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
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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
and Mathematical Sciences, Nanyang Technological
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
School of Control Engineering, Northeastern University at
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
and Mathematical Sciences, Nanyang Technological
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
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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
Technological University, Singapore
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.
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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
Institute of Microelectronics, A*STAR (Agency for Science,
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
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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
School of Electrical and Electronic Engineering, Nanyang
Technological University, Singapore
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 µm 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
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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
National University of Singapore
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).
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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
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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,
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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
Institute of Microelectronics, A*STAR, Singapore
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
Institute of Microelectronics, A*STAR, Singapore
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
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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
Institute of Microelectronics, A*STAR, Singapore
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
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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
School of Electrical and Electronic Engineering, Nanyang
Technological University, Singapore
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
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School of Physical and Mathematical Sciences, Nanyang
Technological University, Singapore
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
School of Electrical and Electronic Engineering, Nanyang
Technological University, Singapore
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
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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
trafﬕc 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
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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
Institute of Microelectronics, A*STAR, Singapore
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.
Pobrano z http://repo.pw.edu.pl / Downloaded from Repository of Warsaw University of Technology 2022-02-14
PGC2012
Programme & Abstracts 134
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
School of Electrical and Electronic Engineering, Nanyang
Technological University, Singapore
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
School of Control Engineering, Northeastern University at
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
Pobrano z http://repo.pw.edu.pl / Downloaded from Repository of Warsaw University of Technology 2022-02-14
PGC2012
135 Programme & Abstracts
Seyed Mohammad Mirjalili, Kambiz Abedi, Seyedali Mirjalili
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
School of Control Engineering, Northeastern University at
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
Institute of Photonics Technology, Jinan University
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
Institute of Photonics Technology, Jinan University
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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