IEEE Photonics Society
(formerly
Lasers and Electro-Optics)
Committee Members (2009):
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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
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[Activities] [Seminars] [Photonics (HK) Postgraduate Student Seminar Series] [Conference Listings] [Job Listing] [Useful Links]
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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 (Johns
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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 University of Berlin, Germany) |
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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 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 ï‚£ 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
IEEE
Photonics Society Conference Listings (2009)
·
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. Andrew
POON: eeawpoon@ust.hk