IEEE Photonics Society
(formerly Lasers and
Electro-Optics)
GOOD
NEWS!! Once again, our Hong Kong Chapter has been awarded the 2011 Chapter
of the Year Award by the IEEE Photonics Society, THREE times in a
row!!!.
Committee Members (2011):
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Chairman: |
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Vice Chairman: |
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Secretary: |
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Treasurer: |
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Past
Chairman: |
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Members
at Large: |
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Other
Members |
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[Activities] [Seminars] [Photonics (HK) Postgraduate Student Seminar Series] [Conference Listings] [Job Listing] [Useful Links]
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Jan 11, 2012 |
Analysis and Selection Of
High-Speed Network Services For Scientific Data Movement, Prof. Malathi VEERARAGHAVAN ( |
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Dec 15, 2011 |
Broadband
Chromium-Doped Fiber Amplifiers for Next-Generation Optical Communication
Systems, Prof. Wood-Hi CHENG ( |
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Dec 12, 2011 |
Research Activities in EEE
UNNC and PhD Scholarships in UNNC,
Prof. Yaping ZHANG ( |
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Dec 12, 2011 |
Fiber
Optical Parametric Amplifiers for Optical Communication, Prof. Michel E. MARHIC ( |
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Oct 20, 2011 |
Soliton
Management in Periodic Systems, Prof. Boris A. MALOMED ( |
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July 25, 2011 |
Tailoring
Ultrashort Laser Interactions for Moulding 3D Photonic and Optofluidic
Microsystems, Prof. Peter
HERMAN ( |
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July 15, 2011 |
Recent Advances in
Optical Communications Research, Dr. Xiang LIU ( |
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July 8, 2011 |
Scaling Optical Packet
Switches to Large Number of Ports, Prof. H. J. S. DORREN ( |
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May 13, 2011 |
In Vivo Fluorescence Brain Imaging In Freely
Moving Animals, Prof. Mark SCHNITZER ( |
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Feb 8, 2011 |
Photonic
Band Gap Materials: Light Trapping Crystals, Prof. Sajeev JOHN ( |
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Jan 28, 2011 |
Self-Mixing
Interferometry:a Universal Yardstick to Measure Almost Everything, Prof. Silvano DONATI ( |
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Aug 24, 2010 |
Interconnecting with
Silicon, Dr. Mehdi ASGHARI (Kotura Inc, |
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July 2, 2010 |
Materials,
Methods, and Applications for Photonics Integration, Mr. Ta-Ming SHIH ( |
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Apr 30, 2010 |
Extended-Reach Gigabit
Passive Optical Network for Rural Areas, Dr. Alan LEE
(The University of |
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Apr 30, 2010 |
Fiber-Wireless
Technology, Prof.
Christina LIM (The University of |
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Apr 28, 2010 |
Microwave Photonics, Prof. Jianping YAO ( |
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Dec 22, 2009 |
Physical Layer of Fiber
Optical Communication and Sensor Systems, Prof. Changyuan YU (National |
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Oct 28, 2009 |
Recent Progress in
Distributed Fibre Optics Sensing Towards Centimeter Spatial Resolution, Prof. Luc THÉVENAZ (Swiss Federal Institute of Technology, Switzerland) |
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Aug 11, 2009 |
Physical Layer of Fiber
Optical Communication and Sensor Systems, Prof. Changyuan YU (National |
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Aug 11, 2009 |
Advances in Nonlinear
Fibre Optics, Supercontinuum Generation, Ultrafast Photonics and Applications, Prof. John DUDLEY ( [IEEE PHOTONICS SOCIETY DISTINGUISHED LECTURE] |
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Jul 20, 2009 |
Advanced Photonic
Integration and High-Index-Contrast Circuit
, Dr. Sai CHU (Infinera
Corporation, |
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Jul 15, 2009 |
Presentation I: Lightwave Technology
in Singapore and NTRC (Components, Systems and Networks) Presentation II: Simultaneous Implementation
of Potohnic OR and AND Logic Gates for CSRZ-OOK Signal (Prof. P. SHUM, Dr. Songnian FuU
and Mr. Feng ZHANG
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Jul 6, 2009 |
New Generation
Endomicroscopy Technologies and Translational Nano-biophotonics Imaging,
Dr. Xingde LI ( |
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Jun 26, 2009 |
Synchronization of Semiconductor Lasers, Prof. Jia-Ming LIU ( |
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Jun 18, 2009 |
Interesting Dynamics of
Semiconductor Lasers, Prof. Jia-Ming LIU ( |
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May 21, 2009 |
Nanophotonics Go Green:
From Stacked Photonics to Solar Cells, Dr. Weidong ZHOU ( |
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Apr 8, 2009 |
Semiconductor Wafer
Bonding Technology for Device Integration, Prof. Paul YU ( |
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Feb
11, 2009 |
VLSI Photonics: Science
and Engineering of Micro/Nano-Photonics, Prof. Dr. El-Hang LEE ( |
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Feb
5, 2009 |
New Trends in
Photonics:From Green Photonics to Biophotonics, and Beyond, Mr. Kevin TSIA, ( |
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Jan
21, 2009 |
Development
of Fiber Lasers and Their Beam Combination at SIOM, Prof. Qihong LOU (Shanghai
Institute of Optics and fine Mechanics, PRC) |
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Dec
1, 2008 |
Coherent
Dark Resonances: High Resolution Spectroscopy and Applications, Prof Victor N. ZADKOV ( |
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Nov
28, 2008 |
Seminar
on Display Technologies, Project: “Enhance the Capability of Engineers in the Electronics Industry in
Exploiting New Technologies to Develop New Materials, Components and
Products? Physical Society of |
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Nov
25, 2008 |
Long-wavelength VCSELs
and VCSEL Arrays for High-Speed, High-Power and High Sensitivity, Dr Werner HOFMANN (Walter
Schottky Institute, |
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Nov
21, 2008 |
Signal Processing in III-V
Semiconductors for High Speed Optical Switching, Prof. H.J.S. DORREN ( |
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Nov
10, 2008 |
Recent Advances in Parametric Amplification and Processing, Dr. Camille-Sophie BRÈS ( |
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Oct
31, 2008 |
Integrated Silicon Photonics:
Technology and Products, Dr. Mehdi ASGHARI, (Kotura Inc., |
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Aug
21, 2008 |
Manipulation
of Thermal Radiation Using Nano-photonic Devices, Mr.
Wah Tung LAU ( |
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Aug
18, 2008 |
Manipulation
of Thermal Radiation Using Nano-photonic Devices, Mr.
Wah Tung LAU ( |
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July
2, 2008. |
All-Optical Regeneration -
Requirements and Capabilities, Prof. Andrew
ELLIS ( |
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June
5, 2008 |
Recent Progress In Silicon
Based Micro/Nano Optoelectronic Devices, Prof. Zhiping (James)
ZHOU ( |
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May
27, 2008 |
Nanowires and Nanolasers:
What is the Ultimate Size Limit?, Prof. Cun-Zheng NING ( |
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May
23, 2008 |
High Power Passive Fiber
Components for Fiber Laser and Amplifier, Dr. Kok Wai CHANG
(Raydiance-Inc.) |
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April
29, 2008 |
THz Science and
Technology: an Overview, Prof. Ci-Ling PAN (CUHK, |
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April
22, 2008 |
Soliton Management in
Periodic Systems,
Prof. Boris A. Malomed ( |
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April
17, 2008 |
Gallium Arsenide Electro-Optic
Waveguide Devices,
Dr. John HEATON (RFMD ( |
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April
16, 2008 |
Electromagnetic Simulation
of Large-Scale Photonic Crystal Problems, Prof. Jian-Ming JIN ( |
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April
11, 2008 |
Recent
Progress in Liquid Crystal Laser and THz Optics, Prof. Ci-Ling PAN (CUHK, |
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March
6, 2008 |
THz Photonics with
Liquid-Crystal-Enabled Functionalities, Prof. Ci-Ling PAN (CUHK, |
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February
5, 2008 |
Contemporary Approaches
in All-Optical Processing: Exploiting Novel Materials, Structures and
Wavelengths, Prof. Roberto MORANDOTTI, ( |
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February
4, 2008 |
An Overview of Recent High
Speed Product Development within SHF, Dr. Thomas LEE, (SHF
Communication Technology AG, |
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January
17, 2008 |
Energy Harvesting in
Silicon Photonic Devices, Mr. Kevin
Kin-Man TSIA ( |
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December
10, 2007 |
Coupling Dynamics in
Semiconductor Lasers and Applications to Self-Mixing Interferometry and
Chaotic Cryptography, Prof. Silvano DONATI ( |
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December
4, 2007 |
The Marriage of Photonics
and Communication Theory for 100 Gb/s Long-Haul and Ethernet Fiber-Optic
Transmissions,
Mr. Alan Pak Tao LAU (Stanford University, USA) |
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November
30, 2007 |
The ePIXnet Silicon
Photonics Platform and Research at IMEC,, Dr. Pieter DUMON (IMEC ? |
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November
30, 2007 |
The Marriage of Photonics
and Communication Theory for 100 Gb/s Long-Haul and Ethernet Fiber-Optic
Transmissions,
Mr. Alan Pak Tao LAU (Stanford University, USA) |
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July 27, 2007 |
Some Research Activities
on Microwave Photonics at COER/ZJU, Prof. Sailing HE ( |
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July 26, 2007 |
Strongly-confined Si-based
optical waveguides and devices, Prof. Sailing HE ( |
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April 19, 2007 |
Fiber Optical Parametric
Amplifiers,
Prof. Michel E. MARHIC ( |
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December
7, 2006 |
Improving the Photonic
Integration Density and Functionalities wit Nanostructures Metamaterials,
Prof. Sailing HE ( |
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November
13, 2006 |
Ultrafast Photonic
Signal Processing, Prof. Lawrence CHEN ( |
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November
9, 2006 |
Wavelength Tunable Organic
Devices and Nanostructures, Prof. Wallace CHOY ( |
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July
31, 2006 |
Optical Pulse Converter
and FWM in Dense Periodical Fibers, Dr. |
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July
17, 2006 |
80+ GBit/s ETDM Systems
Implementation: An overview of Current Technologies, by Dr. Thomas
LEE (SHF Technologies, |
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May
20, 2006 |
Structural Monitoring ?
Combining Fibre Optics With Ultrasound, by Prof. Brian CULSHAW (Unversity of |
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May
18, 2006 |
Remote Near Infra Red
Gas Spectroscopy Using Fibre Optic Systems, by Prof. Brian CULSHAW (Unversity of |
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April
13, 2006 |
Silicon-based
Optoeletronics, by Dr. Ansheng LIU (Intel Corp. |
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April
11, 2006 |
Silicon-on-Insulator
based micro-optical integration platform, by Dr. Lars ZIMMERMANN
(Technical |
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40 Gb/s Over 10 Gb/s DWDM
Long-haul Optically Amplified Transmission, by Prof. Le N.
BINH ( |
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Silicon-based Planar
Lightwave Circuits,
by Dr. Daoxin DAI (The Chinese University of |
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InP Optoelectronics:
Design and Fabrication of high performance Fullband Tunable Lasers and Modulators for Optical Networks, by?Dr. Andy CARTER (Bookham, Inc.) |
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Quantum Well and Quantum
Dot Intermixing for Optoelectronic Device Integration, by Prof.
Chennupati JAGADISH ( |
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Next Generation PLCs for
Optical Communications, by Prof. Yung Jui (Ray) CHEN, ( |
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Micro-Ring Resonator ?a
VLSI Platform for Optics? by
Prof. Yung Jui (Ray) CHEN, ( |
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Advanced Signaling for
Optical Fiber Communications, by Dr. Lothar MOELLER ( |
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Photonics Research in
Shanghai Jiao Tong University , by Prof. Weisheng HU and
Prof. Yikai SU ( |
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Practical Applications of
Optical Parametric Amplifiers in Optical Communication Systems, by Prof.
Kenneth KY WONG (HKU) |
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Time-Wavelength Signal
Processing and Its Applications to A/D Conversion, Waveform Generation, and
Spectroscopy, by Dr. Bahram JALALI, ( |
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Silicon Photonics
Research : Applications Recent Results and Integration Challenges with CMOS
processing for High Volume Manufacturing, by Dr. Mario PANICCIA, (Intel Corp., |
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Fiber to the
Premises (FTTP): Evolution of the Broadband Networks for Converged Voice,
Data and Video , by
Prof. Wei Ping HUANG, ( |
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3-Dimensional Nanoimprinting, by Prof.
Stella PANG, ( |
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Optoelectronic Packaging for Optical
Interconnects, by
Prof. Sing LEE ( |
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International Technology Conference: ?004 Technology Drivers
for Tomorrow? Photonics and Bio-photonics , organized by Hong Kong Science &
Technology Parks (HKSTP) |
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Properties of Planar Lightwave Circuit (PLC)
Devices Fabricated by Silica and Polymers, by
Dr. Tohru MARUNO (NTT Photonics Laboratories, |
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Photonic
Crystal Fires: a Multi-faceted Superhighway for Light by Prof. Philip
RUSSELL ( |
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November 3, 2003 |
Multi-Wavelength Injection-Locked Laser Diode: A Key Device for Future All-Optical Networks? by Dr. Simon L Y CHAN (The Hong Kong Polytechnic University) |
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August 7, 2003 |
Nanoimprinting
Technology And Micro Gas Chromatography by Prof. Stella W. PANG ( |
Photonics(HK)
Postgraduate Student Seminar Series
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June 24, 2010 The 5:00 p.m. to 6:00 p.m. Rm 503, |
Title: All-optical signal processing using
photonic crystal fiber based Mach-Zehnder interferometer |
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April 29, 2010 5:00 p.m. to 6:00 p.m. LT 12, |
Title: Novel Applications of Diffractive Optical
Elements in Optical Fiber Communications Speaker: Mr. WEN Fung, Jacky, Title: All-Fiber Based Ultrashort Pulse Generation and
Chirped Pulse Amplification through Parametric Processes Speaker: Mr. Zhou Yue, The |
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October 29, 2009 The 5:00 p.m. to 6:00 p.m. LTH (Lift 27-28), |
Title: Monolithic Light Emitting Diode Micro-display on Active Matrix Substrate Using Flip-Chip Technology Speaker: Mr. Zhaojun Liu, Photonic Technology Center, ECE Department, The Hong Kong University of Science and Technology. Abstract: We report a GaN-based, active matrix
programmed 8℅8 monolithic LED micro-display using flip-chip
techonology. The active matrix (AM) panel consists of 8℅8 driving
circuits which were fabricated on a single crystal silicon wafer and in the
configuration of two p-type metal-oxide-silicon (PMOS) transistors and one
capacitor. The LED micro array includes 8℅8 blue LED (Emission
Wavelength = 440nm) pixels with the n-electrodes connected together and
individually separated p-electrodes. The LED micro array was then flipped
onto the AM panel using standard flip-chip technology and the p-electrodes of
the LED pixels are connected to the output of the driving circuits on the AM
panel. The fabricated prototype can be individually lighted up or fully
powered with excellent emission uniformity. Title: Various Waveguide Gratings for Coupling between Silicon Waveguides and Vertical Optical Fibers Speaker: Mr. Xia Chen, The Abstract: One of the major challenges in
the application of integrated optoelectronics based on SOI platform is the
efficient coupling of light to/from an optical fiber or other types of light
sources, because of the relatively small cross section of the submicron-sized
silicon waveguide. Waveguide grating couplers have been used to tackle this
problem. Encouraging progress was achieved in recent years. Different types
of grating couplers will be introduced, including our recent work on
non-uniform focusing grating couplers and single-etch nanoholes grating
couplers. The design process will be presented together with the numerical
and experimental results. |
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June 25, 2009 The 5:00 p.m. to 6:00 p.m. Rm 503, |
Title: Generation and Applications of a Time- and Wavelength-Interleaved Pulsed Laser Source Speaker: Mr. Gordon K. P. Lei , The Abstract: Because of the increasing
demand on internet protocol and multimedia services, the bandwidth
requirement on electronics has been increasing dramatically in recent years.
Different approaches have been demonstrated to relax the requirement,
including different multiplexing and repetition rate multiplication
techniques. In this presentation, we will report how a time- and
wavelength-interleaved pulsed laser source can help to relax the bandwidth
requirement. We will discuss the generation of this pulsed laser source and
demonstrate its applications in optical signal processing at 40 Gb/s. Title: Simulation of all-optical packet
switching using Fabry-Perot laser diode at 10Gb/s Speaker: Mr. Liqing Gan, Abstract: All-optical packet switching
(AOPS) in which both header processing and packet switching are carried out
in the optical domain is a promising technology to handle the bursty traffic
of future optical networks because it does not require O-E-O conversion and
hence can overcome the electronic bottlenecks. Even the most rudimentary form
of AOPS requires (i) nonlinearity in order for light to control light which
is needed in header processing, (ii) optical memory to "remember"
the result of header processing to affect the whole packet, and (iii)
switching of packets based on decision of header processor, eg. on/off
switching based on change in amplifier gain. The properties of injection
locked Fabry-Perot laser diode (FP-LD) could be used to implement the AOPS.
We have experimentally demonstrated using a single FP-LD for both header
processing and packet switching and also a FP-LD for header processing and an
SOA for packet switching. The highest demonstrated header rate is 10 Gb/s. In
this study, we adopt a rate equation model to numerically investigate the
all-optical packet switching with all-optical header processing using FP-LDs
at 10 Gb/s. |
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April 30, 2009 The 5:00 p.m. to 6:00 p.m. in Room 603, |
Title: Versatile Parametric Wavelength Exchange:
A 160-Gb/s OTDM De-Multiplexer Speaker: Mr. Mengzhe Shen, The Abstract: Parametric wavelength exchange
(PWE) has been demonstrated as a versatile device in providing different
functionalities. In this paper, we will concentrate, numerically and
experimentally, on one of these functionalities, namely, all-optical
time de-multiplexing of 160-Gb/s return-to-zero (RZ) signals based on a
pulsed-pump PWE in a 400-m highly-nonlinear dispersion-shifted fiber
(HNL-DSF). Experimental results show power penalties ?/span>‚£ 2.7
dB at bit-error rate (BER) of 10-9 for all de-multiplexed 10-Gb/s RZ
signals. We also derive theoretical expressions for the
conversion/residual efficiencies and investigate the impact of pump
pulse width and phase-mismatch on these efficiencies. Furthermore, the
impacts of pulsed-pump wavelength and power level on the characteristics of
the switching window are investigated numerically. As a result,
the de-multiplexer can be easily upgraded to an add-drop multiplexer
(ADM) because of the complete exchange nature of PWE, which is justified
by the surviving channels?waveform performance. Title: DPSK demodulator based on DANLM Speaker: Mr. Yongheng Dai, The Abstract: Differential phase-shift keying
(DPSK) modulation format is promising for use in future fiber communication
networks. A number of devices have been previously proposed to
demodulate the signals. The delay-asymmetric nonlinear loop mirror (DANLM)
is a novel device that provides demodulation for bit-rate variable DPSK
signals. Since its initial demonstration in 2008, obstacles of the
implementation and advantages of demodulation performance have been
further investigated. We will report the recent progress of DANLM in the
seminar, including polarization-insensitive operation and wideband DPSK
demodulation. |
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February 26, 2009 The 5:00 p.m. to 6:00 p.m. in Room 4480
(4/F, lift 25,26) |
Title: Stress-induced Birefringence in Polymer
optical Waveguides Speaker: Abstract: Stress-induced birefringence is an
important issue in polymer integrated-optic devices for application in optical
communication systems. The stresses are mainly generated in the fabrication
process due to polymerization shrinkage and mismatch in properties of
constituent materials. However, a good quantitative understanding of such
stress-induced birefringence is very important for the design purposes and to
optimize the fabrication process. In this presentation, firstly, a more
realistic finite element model will be demonstrated to accurately predict the
stresses induced over the entire sequential fabrication process. Then the
stress-induced birefringence characteristics are investigated for different
strip and rib waveguides. Finally, the accurate design of some
non-birefringent polymer waveguides will be shown by taking the
stress-effects into account, in where the stress free assumption completely
fails. As a generic in nature, the approach would also enable optimized
design of more complex integrated-optic devices from the standpoint of
material systems, waveguide geometry and process parameters. Title: Transflective Liquid Crystal Displays Speaker: Mr. Tao Du, Centre for Display Research, HKUST Abstract: Transflective liquid
crystal displays (LCDs) were first demonstrated in the year 1999.
Transflective LCDs are commonly used in mobile and portable applications
because of their superior performance in both indoor and outdoor environment.
Normally, the pixels of the traditional transflective LCDs are separated into
the transmissive and reflective sub-pixels. The transmissive sub-pixels in a
transflective display are transmitting with backlight illumination and the
reflective sub-pixels are reflecting light from the environment under ambient
illumination. Double cell gap approach is applied in
conventional transflective LCDs to get a good match of the transmittance/reflectance
versus voltage curves (TVC/RVC). However, together with the good performance
of such double cell gap approach there is the drawback of complex fabrication
process. In recent years, various transflective LCDs with single cell gap
using two different modes had been proposed. In our group, we invented the multimode
configuration using twist nematic (TN) and low twist nematic (LTN)
modes. In the configuration, LTN mode with 60o twist is
applied to the reflective part while the ECB mode is applied to the
transmissive part. The alignment domains in pixels were realized by
photo-alignment technique. After that, we also tried the single mode single
cell gap approach, and finally the 75o single mode transflective
configuration was invented. Both these two configurations show high
transmittance/reflectance, high contrast ratio and wide viewing angle. Also
the fabrication is not so difficult. Thus they can be applied in TFT
transflective displays. |
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October, 30, 2008 The |
Title: Pedestal Free Pulse Compression in Nonlinear Fibers And Nonlinear Fiber
Bragg Gratings Speaker: Ms. Li Qian, The Abstract: Through the self-similar
analysis, we have theoretically investigated the linearly chirped Bragg
solitary pulses near the photonic bandgap (PBG) structure of FBG. Efficient
Bragg soliton pulse compression can be achieved with appropriate grating
induced dispersion, such as the exponentially decreasing dispersion. From a
practical point of view, the stepwise approximation of the exponentially
decreasing dispersion is carried out by concatenation of grating segments
with different dispersion coefficients. For the proposed compression scheme,
the input pulse must be pre-chirped in prescribed manner, and a simple
pre-chirper, such as a linear fiber or grating, is used to add the required
chirp profile to initial chirp-free hyperbolic secant or Gaussian
pulse.?Higher order nonlinearities must be considered if the optical pulse
intensity is high or the nonlinear coefficients of the materials are large,
for instance, in semiconductor doped glasses. More recently we have
investigated the existence of chirped bright solitons in cubic-quintic
nonlinear media with exponentially decreasing dispersion. From a stability
analysis, we show that the soliton in the anomalous dispersion regime is
stable whereas the soliton in the normal dispersion regime is unstable.
Numerical simulation results confirm that the competing cubic-quintic
nonlinearities stabilize the chirped soliton pulse propagation against
perturbations of the initial soliton parameters. In addition, we study the
possibility of rapid compression of Townes solitons by the collapse
phenomenon in the exponentially decreasing dispersion. We find that the
collapse could be postponed if the dispersion increases exponentially. Title: Wide-Band Generation of Pico-second Pulse via Idler Generation in
optical parametric amplifier Speaker: Zhou Yue, The Abstract: A wide-band generation of
pico-second pulse using optical parametric amplifier (OPA) was demonstrated.
High quality pulse was generated at 85-nm away from the pump with pulsewidth
narrower than that of the pump. |
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August 28, 2008, 5pm |
Title: UV-Written Long-Period Waveguide Grating Coupler Speaker: Mr. Billy C. K. CHOW, Abstract: We demonstrate an optical
broadband Add/Drop multiplexer based on a UV-written long-period waveguide
grating coupler. The coupler is formed with two parallel long-period polymer
waveguide gratings. A maximum coupling efficiency as high as 80% has been
achieved and the resonance wavelength can be tuned over a wavelength range of
120 nm with a temperature control of 22o for the TE polarization.
In particular, a coupler with a polarization-insensitive resonance wavelength
at a specific temperature is also demonstrated. The coupler has the potential
to be further developed into practical broadband add/drop multiplexers. Title: Silicon Cross-Connect Filters and Switches Using Microring Resonator
Coupled Multimode-Interference-Based Waveguide Crossings Speaker: Xu Fang, Abstract: The throughput, power
dissipation, and latency are becoming most critical issues in
high-performance computing system design. The inherent bandwidth and
power dissipation from the metallic interconnect are limiting progress in the
interconnection networks performance for high-performance computers. Silicon
photonics offers an alternative optical solution to on-chip interconnection
using mature complementary metal-oxide-semiconductor (CMOS) fabrication
technologies. Here, we focus on our work on the architecture of cross-connect
filters and matrix switch using cascaded microrings coupled to low-loss
low-crosstalk multimode-interference-based waveguide crossings on a silicon
chip. We demonstrated cross-connect filters in silicon-on-insulator
substrate. The MMI-based filters exhibit much lower junction induced
crosstalk level compared with plain crossing filters indicated by the
symmetrical lineshapes in the drop-port spectra of the MMI-based filter. We
also vision the filters can be reconfigurable using plasma dispersion effect
and cascaded into matrix switch. We discuss prospects of using such
matrix switch as a 5naps/?>rof hctiws tiucric lacitpo-ortcele 5 elbissop dna seussi lacigolonhcet eniltuo osla dna ,gnitupmoc eroc-ynam .snoitagitim |
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June 26, 2008, 5pm The |
Title: Non-reciprocal Optical
Modulation for Integrated Re-Modulation in Optical Access Networks Speaker: Mr. Lin Xu, The Chinese University of |
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April 24, 2008, 5pm |
Title: Double-Notch-Shaped Microdisk Resonator-Based Devices in
Silicon-on-Insulator Speaker: Mr. Xianshu LUO, HKUST Abstract: Compared with
conventional circular microdisk resonators, double-notch-shaped microdisk
resonators possess the advantage of gapless coupling between input/output
waveguides and microresonators, yet still keep high quality factor cavity
resonances.We demonstrate double-notch-shaped microdisk resonator-based
filters in silicon-on-insulator. Our filter demonstrates
whispering-gallery-like modes with Q exceeding 104. We also
propose and fabricate electro-optic modulators using this structure
integrated with a metal-oxide-semiconductor capacitor. Title: Simultaneous
Optical Delay and NRZ-RZ Format Conversion via Cross-Polarization Modulation
and Pulse Pre-chirp Speaker: Mr. Bill P. P. KUO, HKU Abstract: All-optical
tunable delay plays important roles for enabling high-throughput optical
routing, such as buffering for contention resolution and timing
synchronization. We propose and demonstrate a widely-tunable optical delay
using cross-polarization modulation-based wavelength converter (XPolM-WC) and
pulse pre-chirping for compensating chromatic dispersion in fiber. Thanks to
wide-band operation provided by XPolM-WC, large delay range up to 8.6 ns is
obtained. Meanwhile, pulse pre-chirping technique helps to attain error-free
operation over the whole delay range, and NRZ-to-RZ format conversion is
achieved due to temporal compression of chirped pulse. |
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Announcements/News
- All IEEE LEOS student members can join Hong Kong Optoelectronics Association at
a reduced membership fee of HK$100.
- Our Hong Kong Chapter has been awarded the 2009 Chapter
of the Year Award by the IEEE Photonics Society. The Award will
be presented during the Awards Banquet at the Photonics Society Annual
2009 Meeting in
- Once again, our Hong Kong Chapter has been
awarded the 2010 Chapter of the Year Award by the IEEE Photonics
Society. The Award will be presented during the Awards Banquet at
the Photonics Society Annual 2010 Meeting in
IEEE Photonics Society
Conference Listings
·
Non-Linear
Optics in Semiconductors Post Doctoral Position, Photonics Group, University Of
Toronto (Posted on Aug 29, 2008)
·
Raman
Spectroscopy of Nanostructures Post Doctoral Position, Photonics
Group,University Of Toronto (Posted on Aug 29, 2008)
·
Postdoctoral
Research in Electronic Signal Processing for Optical Transmission Systems (Posted on Jan 19, 2009)
·
Post-doctoral Research
Position in the Field of Photonic Devices and Optical Communication Subsystems (Posted on Feb 4, 2009)
·
Post-doctoral
Research Position in the Field of Fiber Optical Parametric Amplifiers (Posted on Feb 16, 2009)
·
Post-doctoral
Research Position in the Field of Microphotonics (Posted on Feb 17, 2009)
·
Tenure-track
Assistant Professor Position in Optical Fiber, Optical Communications,
Photonics (NTU, Singapore) (Posted
on Apr 28, 2009)
Hong
Kong Optoelectronics Association
Contact Person:
Prof. Kenneth Wong: kywong@eee.hku.hk