Description: photographDr. Hon Ki TSANG  BA (Hons.), MA(Cantab.), Ph.D., Fellow of IEEE, Fellow of Optica, Fellow of HKIE


Wei Lun Professor of Electronic Engineering

Dean of the Faculty of Engineering

Email: hktsang@ee.cuhk.edu.hk

Hon Tsang’s short CV

 

 

Biography

Hon Ki Tsang was born in Hong Kong and studied Engineering and Electrical and information sciences at University of Cambridge, graduating with BA (Hons) in 1987. He then completed a PhD also at University of Cambridge University, in 1991. He was postdoctoral fellow in the School of Physics, University of Bath for before joining CUHK in September 1993. He entered the then emerging field of silicon photonics in 2000 and in 2001-2003 he took leave from CUHK to work at Bookham Technology plc as R&D director developing silicon waveguide variable optical attenuator arrays and Arrayed waveguide Grating products.  Those early silicon photonic products enabled dynamic balancing of optical power levels during the reconfiguration of Wavelength Division Multiplexed (WDM) in commercial telecommunication systems. From its small beginnings attracting interest from only a handful of groups 25 years ago, silicon photonics has grown to be an major new platform for  research (watch Tsang’s interview by OSA)  to become a mainstream technology for high-speed energy-efficient data interconnects in data centers, with large volume of Si photonics transceivers underpinning the growth of the internet and the development of Artificial Intelligence.  Silicon photonics today remains a promising area for academic research because there remains many important potential future applications that are relatively unexplored for advancing the performance of microelectronic systems beyond what could be achieve by using purely electrical circuits. The use of photons in photonic integrated circuits not only offers significant improvements in energy-efficiency for high-capacity data interconnects in high performance computers, but photons are naturally more useful than electrons for sensing the  environment (humans relay on light to see!). The processing of light signals in photonic integrated circuits offers advanced capability in photonic systems on chip for future applications in integrated gas sensors, integrated biosensors for heath monitoring, advanced three-dimensional imaging systems, and integrated quantum photonic devices for quantum computing, quantum metrology and quantum communications. Tsang’s research contributions to the field of silicon photonics include developing a basic understanding of the nonlinear properties of silicon optical waveguides: he carried the first experimental measurements of the Kerr nonlinearity in silicon waveguides, the first studies of two photon absorption and associated free carrier absorption that forms the basis of the now widely accepted model of two photon absorption and free carrier absorption in silicon waveguides. With this understanding he was able to realize the first high net-gain waveguide silicon Raman amplifier in 2004. These papers are important because the tiny cross-sectional areas of silicon waveguides enable nonlinear optical effects such as two photon absorption or self-phase modulation to manifest at optical powers as low as a few milliwatts. Tsang’s research group’s most recent research contributions include the first multimode waveguide grating couplers for selective-launch of different modes in multimode fibers, advances in waveguide grating couplers that enabled sub-decibel coupling loss using standard foundry photolithography and fabrication process, and advances in the state-of-the-art for Si modulators to demonstrate class leading modulator data rates >300Gb/s. Tsang’s current  research interests include

·                 Integrated quantum photonics

·                 Hybrid integration of optoelectronic materials including  2D materials (such as graphene, MoS2, WS2 WSe2 , hBN etc) and III-V semiconductors in silicon photonics

·                 Silicon photonics to enable mode division multiplexing in multimode fiber and for multimode fiber for endoscopic imaging

·                 Advanced optical modulators for high-capacity optical communications

·                 Field programmable photonic circuits

·                 Integrated optical spectrometers

·                 Optical signal processing using silicon photonics

·                 Advanced waveguide grating couplers

Tsang's Research Group (2023)

Description: photograph

 

 

Ongoing Research Grants as Principal Investigator

Title

Funding Agency

Start

End

Amount

Resonance-Enhanced Waveguide Grating Couplers for Wideband High Capacity CWDM Transceivers  (14207021)

RGC GRF

01/01/2022

31/12/2024

$838,393

Hybrid Integration of Layered Group Ten Transition Metal Dichalcogenides on Planar Waveguides for Long Wavelength Optical Communications (N_CUHK423/21)

RGC/NSFC Joint Research Scheme

01/01/2022

31/12/2025

$1,171,334

Coherent Microresonator Networks for Reconfigurable Photonic Integrated Circuits (14204623)

RGC GRF

01/01/2024

31/12/2026

$1,017,450

Silicon Photonics for Terabit/s Multimode Optical Fiber Interconnects (ITS/226/21FP)

ITF

01/08/2022

31/07/2024

$9,839,881

Integrated Photonic Control of Mode Distribution in Multimode Optical Fiber for Novel Ultra-small Diameter Multimode Fiber Endoscopic Imaging System (14207924)

RGC GRF

01/01/2025

31/12/2027

$1,133,254

Silicon Photonics and the Heterogeneous Epitaxy of III-V Semiconductors on Silicon for Advanced Photonic Systems-on-chip

RGC STG

1/1/2025

31/12/2026

$5,556,000

GRF Descriptions available from RGC search

 

 

 

 

 

Possible Openings for PhD students

Please email Prof Tsang if you are interested in joining his group as a PhD student.  Openings are subject to the availability of new research grant funding. Please contact Prof Tsang before you submit your formal applications to the Electronic Engineering graduate division and CUHK graduate school before 1 December of each year.  CUHK offers financial support for PhD students via postgraduate studentship (PGS) of about HK$220,320. For those candidates with top ~1% academic credentials, there is a possibliety of applying for  RGC PhD fellowship  which has a higher level of financial support of HK$331,200 per year. Deadline for applications to RGC is 1 December of each year for admission in August in the next year.

Current Research Team

Postdoctoral Researchers:  Dr Hongnan XU, Dr Dan Yi, Dr Kazi Rony,   Dr Xuetong Zhou, Dr Keyi Zhong

Research Students: Gaolei Hu, Jiapeng Luan, Yue Qin, Shuqi Xiao, Zelu Wang, Chenfei Cui, Liang Zhang, Martin Wing Hei Leung, Caiyue Zhao, Linyan Lv and  Qingyue Cai

Recent PhD Alumni: Dr.Yi Wang, Dr David W.U Chan,  Dr. Zunyue Zhang, Dr.Yaojing Zhang, Dr.Rakesh R. KUMAR, Dr Yeyu Yong, Dr Wen Zhou, Dr Xinru Wu

Journal Publications

As of July 2024,Tsang has co-authored about 284 journal papers and about 296 conference papers.  The publications are found on Researchgate, Scopus ID, ORCID ID: or Researcher ID. The list below include some of the journal papers published since 2008.

1.            J. Luan, Y. Qin, S. Xiao, K. Zhong and H. K. Tsang, "Angled Bent Multimode Interferometer for Wavelength Division Multiplexing," Journal of Lightwave Technology, 2024 doi: 10.1109/JLT.2024.3413896.

2.            Yue Qin, Hongnan Xu, Gaolei Hu, and Hon Ki Tsang, "High-visibility energy-time entanglement system enabled by a low-loss silicon-integrated platform," Opt. Lett. 49, 2849-2852, 2024

3.            Fan Ye, Yue Qin, Chenfei Cui, Xiankai Sun, and Hon Ki Tsang, "Integrated bound-state-in-the-continuum photon-pair source," Photon. Res. 12, 1322-1327 2024.

4.            X. Zhou, Y. Wang, Z. Zhang and H. K. Tsang, "Resonance-Enhanced Wideband Grating for Efficient Perfectly Vertical Coupling," IEEE Photonics Technology Letters, vol. 36, no. 8, pp. 555-558, 15 April, 2024.

5.            Jiapeng Luan, Yue Qin, Zelu Wang, Shuqi Xiao, and Hon Ki Tsang, "Compact supermode switch for photonic matrix processing," Opt. Lett. 49, 2721-2724, 2024.

6.            M. Luo, T. Xu, S. Xiao, H. K. Tsang, C. Shu, C. Huang, "Meta-Optics Based Parallel Convolutional Processing for Neural Network Accelerator" Laser Photonics Rev, 2300984.2024.

7.            W. Zhou, Z. Zhang, H. Chen, H. K. Tsang, Y. Tong, "Ultra-Compact and Efficient Integrated Multichannel Mode Multiplexer in Silicon for Few-Mode Fibers." Laser Photonics Rev., 18, 2300460, 2024.

8.            Kaihang Lu, Zengqi Chen, Hao Chen, Wu Zhou, Zunyue Zhang, Hon Ki Tsang, Yeyu Tong, “Empowering high-dimensional optical fiber communications with integrated photonic processors,” Nat Commun 15, 3515 2024.

9.            T.Y. Hung, David W. U Chan, Ching-Wei Peng, Chi-Wai Chow, and Hon Ki Tsang. "Regeneration of 200 Gbit/s PAM4 Signal Produced by Silicon Microring Modulator (SiMRM) Using Mach–Zehnder Interferometer (MZI)-Based Optical Neural Network (ONN)" Photonics 11, no. 4: 349 2024.

10.        Tun-Yao Hung, David WU Chan, Ching-Wei Peng, Chi-Wai Chow, Hon Ki Tsang, "300-Gbit/s/λ 8-Level Pulse-Amplitude-Modulation (PAM8) with a silicon microring modulator utilizing long short term memory regression and deep neural network classification" Optics & Laser Technology 171, 110379, 2024

11.        Rongxiang Guo, Qi He, Zunyue Zhang, Yingqi Xu, Shujiao Zhang, Qiyue Lang, Shuqi Xiao, Peize Han, Jiaqi Wang, Tianben Ding, Tiegen Liu, Hon Ki Tsang, Keisuke Goda, Zhenzhou Cheng " High-Q silicon microring resonator with ultrathin sub-wavelength thicknesses for sensitive gas sensing," Applied Phys. Reviews 11, 021417, 2024.

12.        Jiaqi Wang, Hui Zhang, Zhiwei Wei, Yingqi Xu, Rongxiang Guo, Guoxian Wu, Xu Li, Penghao Ding, Yu Du, Youfu Geng, Xuejin Li, Hon Ki Tsang, Zhenzhou Cheng “Dual-mode microring resonator for humidity sensing with temperature compensation,” Sensors and Actuators B: Chemical, 136167, 2024

13.        Dan Yi, Yeyu Tong, and Hon Ki Tsang, "Unmixing Data Lanes in Mode-Division Multiplexing Optical Fiber Transmission Using an Integrated Photonic Processor," J. Lightwave Technol. 42, 287-292, 2024

14.        X. Zhou and H. K. Tsang, "Photolithography Fabricated Broadband Waveguide Grating Couplers With 1 dB Bandwidth Over 100 nm," in IEEE Photonics Journal, vol. 16, no. 1, Art no. 6600206,  2024, , doi: 10.1109/JPHOT.2023.3344361.

15.        Gaolei Hu,Yue Qin,H.K. Tsang, “Multimode Fiber Speckle Imaging Using Integrated Optical Phased Array and Wavelength Scanning,” Journal of Lightwave Technology vol. 42, no. 9, pp. 3385-3392, 1 May1, 2024.

16.        J. Xu, L. Qi, Y. Xu, S. Xiao, Q. Yuan, R. Niu, J. Wang, H.K. Tsang, T. Liu and  Z. Cheng, “Giant optical absorption of a PtSe 2-on-silicon waveguide in mid-infrared wavelengths,” Nanoscale DOI: 10.1039/D3NR05983A, 2024

17.        H. Xu, Y. Qin, G. Hu, H.K. Tsang, “Scalable integrated two-dimensional Fourier-transform spectrometry,” Nature Communications 15 (1), 436, 2024

18.        Y. Hung, D.W.U Chan, C.W. Peng, C.W. Chow, H.K. Tsang, “300-Gbit/s/λ 8-Level Pulse-Amplitude-Modulation (PAM8) with a silicon microring modulator utilizing long short term memory regression and deep neural network classification,” Optics & Laser Technology 171, 110379, 2024.

19.        Hongnan Xu, Yue Qin, Gaolei Hu, and Hon Ki Tsang, "Cavity-enhanced scalable integrated temporal random-speckle spectrometry," Optica 10, 1177-1188, 2023.

20.        D.Yi, J. Luan,Y. Wang, and H.K.Tsang,"Reconfigurable polarization processor based on coherent four-port micro-ring resonator" Nanophotonics, 12 (22), 4127-4136, 2023. https://doi.org/10.1515/nanoph-2023-0031

21.        Y. Zheng, C. Zhai, D. Liu, J. Mao, X. Chen, T. Dai, J. Huang, J. Bao, Z. Fu, Y. Tong, X. Zhou, Y. Yang, B. Tang, Z. Li, Q. Gong, H. K. Tsang, D. Dai, J. Wang, "Multi-chip multidimensional quantum network with entanglement self-retrieving, Science, 2023, https://www.science.org/journal/science

22.        D. Yi, X. Zhou and H. K. Tsang, "Dynamic Control of Distal Spatial Mode Pattern Output From Multimode Fiber Using Integrated Coherent Network,"  IEEE Photonics Journal, vol. 15, no. 5, , Art no. 6602205, 2023.

23.        Y.Xue, J. Li, Yi Wang, Ke Xu, Z. Xing, K.S. Wong, H.K.Tsang and K.M.Lau “In-plane 1.5 µm distributed feedback lasers selectively grown on (001) SOI,” Lasers and Photonics Reviews, 2023. https://doi.org/10.1002/lpor.202300549

24.        Xuetong Zhou, Ying Xue, Fan Ye, Ziyao Feng, Yuan Li, Xiankai Sun, Kei May Lau, and Hon Ki Tsang, "High coupling efficiency waveguide grating couplers on lithium niobate," Opt. Lett. 48, 3267-3270,  2023

25.        G. Hu,  K. Zhong,  Y. Qin, and  H. K. Tsang, “Silicon Photonic Integrated Circuit for High-Resolution Multimode Fiber Imaging System,” APL Photonics, 8, 046104,  2023.

26.        H. Xu, Y. Qin, G. Hu, H.K. Tsang, “Breaking the resolution-bandwidth limit of chip-scale spectrometry by harnessing a dispersion-engineered photonic molecule,” Light: Science & Applications 12 (1), 64, 2023.

27.        Y. Zhang, K. Zhong, H.K. Tsang, “Compact multimode silicon racetrack resonators for high-efficiency tunable Raman lasers,” Applied Physics Letters 122 (8), 081101, 2023.

28.        D.W.U Chan, X. Wu, C. Lu, A.P.T. Lau, H.K. Tsang, “Efficient 330-Gb/s PAM-8 modulation using silicon microring modulators,” Optics Letters 48 (4), 1036-1039, 2023.

29.        H. Xu, Y. Qin, G. Hu, H.K. Tsang, “Integrated Single-Resonator Spectrometer beyond the Free-Spectral-Range Limit,” ACS Photonics 10(3), 654-666, 2023.

30.        X. Zhou, H.K. Tsang, “Combined polysilicon and silicon gratings for dual-wavelength-band waveguide grating couplers,” Optics Letters 48 (2), 279-282, 2023.

31.        H. Xu, Y. Qin, G. Hu, H.K. Tsang, “Compact integrated mode-size converter using a broadband ultralow-loss parabolic-mirror collimator,” Optics Letters 48 (2), 327-330, 2023.

32.        H. Xu, Y. Qin, G. Hu, H.K. Tsang, “Meta‐Structured Silicon Nanophotonic Polarization Beam Splitter with an Optical Bandwidth of 415 nm,” Laser & Photonics Reviews, 2200550, 2023.

33.        W. Chen, D. Wan, Q. He, J. Wang, H. Hu, T. Liu, H.K. Tsang, Z. Cheng, “Relaxed-tolerance subwavelength grating coupler,” Optics & Laser Technology 161, 109214, 2023.

34.        C.W. Peng, D.W.U Chan, C.W. Chow, T.Y. Hung, Y.H. Jian, Y. Tong, P.C. Kuo, G. Chen, Y. Liu, C.H. Yeh, H.K. Tsang, “Long Short Term Memory Neural Network (LSTMNN) and inter-symbol feature extraction for 160 Gbit/s PAM4 from silicon micro-ring transmitter,” Optics Communications 529, 129067, 2023.

35.        Y. Li, Z. Zhang, Y. Wang, Y. Yu, X. Zhou, H.K. Tsang, X. Sun, “Inverse-Designed Linear Coherent Photonic Networks for High-Resolution Spectral Reconstruction,” ACS Photonics, 2023.

36.        X. Zhou, H.K. Tsang, “Photolithography Fabricated Sub-Decibel High-Efficiency Silicon Waveguide Grating Coupler,” IEEE Photonics Technology Letters 35 (1), 43-46, 2023.

37.        Y. Zhang, K. Zhong, X. Zhou, H.K. Tsang, “Broadband high-Q multimode silicon concentric racetrack resonators for widely tunable Raman lasers,” Nature Communications 13 (1), 3534, 2022.

38.        Y. Xue, Y. Han, Y. Wang, J. Li, J. Wang, Z. Zhang, X. Cai, H.K. Tsang, K.M. Lau, “High-speed and low dark current silicon-waveguide-coupled III-V photodetectors selectively grown on SOI,” Optica 9 (11), 1219-1226, 2022.

39.        X. Zhou, G. Hu, Y. Qin, H.K. Tsang, “Polarization-independent waveguide grating coupler using an optimized polysilicon overlay,” Optics Letters 47 (22), 5825-5828, 2022.

40.        Z. Cheng, R. Guo, J. Wang, Y. Wang, Z Xing, L. Ma, W Wei, Y. Yu, H.K. Tsang, T. Liu, “Integrated optoelectronics with two-dimensional Materials,” National Science Open 1 (3), 20220022, 2022.

41.        H. Xu, Y. Qin, G. Hu, H.K. Tsang, “Million-Q integrated Fabry-Perot cavity using ultralow-loss multimode retroreflectors,” Photonics Research 10 (11), 2549-2559, 2022.

42.        Y. Yu, Z. Yu, Z. Zhang, H.K. Tsang, X. Sun, “Wavelength-Division Multiplexing on an Etchless Lithium Niobate Integrated Platform,” ACS Photonics 9 (10), 3253-3259, 2022.

43.        D.W.U Chan, X. Wu, Z. Zhang, C. Lu, A.P.T. Lau, H.K. Tsang, “Ultra-wide Free-spectral-range Silicon Microring Modulator for high capacity WDM,” Journal of Lightwave Technology 40 (24), 7848-7855, 2022.

44.        D. Yi, H.K. Tsang, “High-Resolution and Broadband Two-Stage Speckle Spectrometer,” Journal of Lightwave Technology 40 (24), 7969-7976, 2022.

45.        X. Zhou, H.K. Tsang, “Optimized shift-pattern overlay for high coupling efficiency waveguide grating couplers,” Optics Letters 47 (15), 3968-3971, 2022.

46.        X. Zhou, H.K. Tsang, “High efficiency multimode waveguide grating coupler for few-mode fibers,” IEEE Photonics Journal 14 (4), 1-5, 2022.

47.        C. Sun, B. Li, W. Shi, J. Lin, N. Ding, H.K. Tsang, A Zhang, “Large-Scale and Broadband Silicon Nitride Optical Phased Arrays,” IEEE Journal of Selected Topics in Quantum Electronics 28 (6), 1-10, 2022.

48.        Y. Wang, Y. Zhou, Z. Zhang, S. Xiao, J. Xu, H.K. Tsang, “40 GHz waveguide-integrated two-dimensional palladium diselenide photodetectors,” Applied Physics Letters 120 (23), 231102, 2022.

49.        D.W.U Chan, X. Wu, Z. Zhang, C. Lu, A.P.T. Lau, H.K. Tsang, “C-band 67 GHz silicon photonic microring modulator for dispersion-uncompensated 100 Gbaud PAM-4,” Optics Letters 47 (11), 2935-2938, 2022.

50.        Z. Zhang, Y. Wang, J. Wang, D. Yi, D.W.U Chan, W Yuan, H.K. Tsang, “Integrated scanning spectrometer with a tunable micro-ring resonator and an arrayed waveguide grating,” Photonics Research 10 (5), A74-A81, 2022.

51.        D.W.U Chan, G. Zhou, X. Wu, Y. Tong, J Zhang, C. Lu, A.P.T. Lau, H.K. Tsang, “A compact 112-Gbaud PAM-4 silicon photonics transceiver for short-reach interconnects,” Journal of Lightwave Technology 40 (8), 2265-2273, 2022.

52.        Y. Zhang, K. Zhong, W. Zhou, H.K. Tsang, “Low-Threshold Continuous-Wave Anti-Stokes Raman Lasing in Silicon Racetrack Resonators,” ACS Photonics 8 (12), 3462-3468, 2021.

53.        Z. Zhang, Y. Li, Y. Wang, Z. Yu, X. Sun, H.K. Tsang, “Compact high resolution speckle spectrometer by using linear coherent integrated network on silicon nitride platform at 776 nm,” Laser & Photonics Reviews 15 (11), 2100039, 2021.

54.        D. Yi, X. Wu, H.K. Tsang, “Ultra-Compact Polarization Analyzer Based on Micro-Ring Resonators,” IEEE Photonics Technology Letters 33 (24), 1371-1374, 2021.

55.        D. Yi, Y. Wang, H.K. Tsang, “Multi-functional photonic processors using coherent network of micro-ring resonators,” APL Photonics 6 (10), 100801, 2021.

56.        Y. Xue, Y. Han, Y. Tong, Z Yan, Y. Wang, Z. Zhang, H.K. Tsang, K.M. Lau, “High-performance III-V photodetectors on a monolithic InP/SOI platform,” Optica 8 (9), 1204-1209, 2021.

57.        Y. Zhang, G. Hu, K. Zhong, W. Zhou, H.K. Tsang, “Investigation of low-power comb generation in silicon microresonators from dual pumps,” Journal of Optics 23 (10), 10LT03, 2021.

58.        Y. Zhang, R.R. Kumar, K. Zhong, H.K. Tsang, “Near-infrared frequency comb generation from a silicon microresonator,” Journal of Optics 23 (10), 10LT02, 2021.

59.        B. Sun, G. Zhou, Y. Wang, X Xu, L. Tao, N. Zhao, H.K. Tsang, X. Wang, Z. Chen, J.B. Xu, “Ultra‐narrowband photodetector with high responsivity enabled by integrating monolayer J‐aggregate organic crystal with graphene,” Advanced Optical Materials 9 (17), 2100158, 2021.

60.        Z. Zhang, Y. Wang, H.K. Tsang, “Tandem configuration of microrings and arrayed waveguide gratings for a high-resolution and broadband stationary optical spectrometer at 860 nm,” ACS Photonics 8 (5), 1251-1257, 2021.

61.        Y. Xue, Y. Wang, W. Luo, J. Huang, L. Lin, H.K. Tsang, K.M. Lau, “Telecom InP-based quantum dash photodetectors grown on Si,” Applied Physics Letters 118 (14), 141101, 2021.

62.        Y. Wang, Z. Yu, Z. Zhang, X. Sun, H.K. Tsang, “Fabrication-tolerant and low-loss hybrid plasmonic slot waveguide mode converter,” Journal of Lightwave Technology 39 (7), 2106-2112, 2021.

63.        D. Yi, W. Zhou, Y. Zhang, H.K. Tsang, “Inverse design of multi-band and wideband waveguide crossings,” Optics Letters 46 (4), 884-887, 2021.

64.        D. Yi, Y. Zhang, H.K. Tsang, “Optimal Bezier curve transition for low-loss ultra-compact S-bends,” Optics Letters 46 (4), 876-879, 2021.

65.        Y. Zhang, K. Zhong, H.K. Tsang, “Raman lasing in multimode silicon racetrack resonators,” Laser & Photonics Reviews 15 (2), 2000336, 2021.

66.        R.R. Kumar, H.K. Tsang, “High-extinction CROW filters for scalable quantum photonics,” Optics Letters 46 (1), 134-137, 2021.

67.        Z. Zhang, Y. Tong, Y. Wang, H.K. Tsang, “Nonparaxial mode-size converter using an ultracompact metamaterial Mikaelian lens,” Journal of Lightwave Technology 39 (7), 2077-2083, 2020.

68.        Y. Zhang, K. Zhong, G. Hu, D. Yi, R.R. Kumar, H.K. Tsang, “Sub-milliwatt optical frequency combs in dual-pumped high-Q multimode silicon resonators,” Applied Physics Letters 117 (22), 221103, 2020.

69.        D. Yi, Y. Zhang, X. Wu, H.K. Tsang, “Integrated multimode waveguide with photonic lantern for speckle spectroscopy,” IEEE Journal of Quantum Electronics 57 (1), 1-8, 2020.

70.        Y. Wang, Z. Yu, Z. Zhang, B. Sun, Y. Tong, J.B. Xu, X. Sun, H.K. Tsang, “Bound-states-in-continuum hybrid integration of 2D platinum diselenide on silicon nitride for high-speed photodetectors,” ACS Photonics 7 (10), 2643-2649, 2020.

71.        R.R. Kumar, Y. Wang, Y. Zhang, H.K. Tsang, “Quantum states of higher-order whispering gallery modes in a silicon micro-disk resonator,” JOSA B 37 (8), 2231-2237, 2020.

72.        Y. Tong, G.H. Chen, Y. Wang, Z. Zhang, D.W.U Chan, C.W. Chow, H.K. Tsang, “1.12-tbit/s pam-4 enabled by a silicon photonic transmitter bridged with a 7-channel MCF,” IEEE Photonics Technology Letters 32 (16), 987-990, 2020.

73.        Y. Wan, S. Zhang, J. C. Norman, M. J. Kennedy, W. He, Y. Tong, C. Shang, J.J. He, H.K. Tsang, A.C. Gossard, and J.E. Bowers “Directly Modulated Single-Mode Tunable Quantum Dot Lasers at 1.3 μm,” Laser & Photonics Reviews 14,  1900348, 2020.

74.        Y. Wan, J.C. Norman, Y. Tong, M.J. Kennedy, W. He, J Selvidge, C. Shang, M. Dumont, A. Malik, H.K. Tsang, A.C. Gossard, J.E. Bowers, “1.3 µm quantum dot‐distributed feedback lasers directly grown on (001) Si,” Laser & Photonics Reviews 14, 2000037, 2020.

75.        Y. Wang, Z. Yu, Y. Tong, B. Sun, Z. Zhang, J.B. Xu, X. Sun, H.K. Tsang, “High-speed infrared two-dimensional platinum diselenide photodetectors,” Applied Physics Letters 116 (21), 211101, 2020.

76.        Z. Yu, Y. Tong, H.K. Tsang, X. Sun, “High-dimensional communication on etchless lithium niobate platform with photonic bound states in the continuum,” Nature Communications 11 (1), 2602, 2020.

77.        Y. Zhang, Y Yao, D. Yi, H.K. Tsang, “Radiation pressure and electrostriction induced enhancement for Kerr-like nonlinearities in a nanoscale silicon pedestal waveguide,” Journal of Optics 22 (5), 055502, 2020.

78.        Y. Xue, Y. Han, Y. Wang, Z. Zhang, H.K. Tsang, K.M. Lau, “Bufferless III–V photodetectors directly grown on (001) silicon-on-insulators,” Optics Letters 45 (7), 1754-1757, 2020.

79.        R.R. Kumar, X. Wu, H.K. Tsang, “Compact high-extinction tunable CROW filters for integrated quantum photonic circuits,” Optics Letters 45 (6), 1289-1292, 2020.

80.        X. Ding, B.P. Yan, W. Karlen, Y.T. Zhang, H.K. Tsang, “Pulse transit time based respiratory rate estimation with singular spectrum analysis,” Medical & Biological Engineering & Computing 58, 257-266, 2020.

81.        Y. Jiao, J. van der Tol, V. Pogoretskii, J. van Engelen, A. A. Kashi, S. Reniers, Y. Wang, X. Zhao, W. Yao, T. Liu, F. Pagliano, A. Fiore, X. Zhang, Z. Cao, R. R. Kumar, H. K. Tsang, R. van Veldhoven, T. de Vries, E.-J. Geluk, J. Bolk, H. Ambrosius, M. Smit, and K. Williams, “Indium phosphide membrane nanophotonic integrated circuits on silicon,” Physica Status Solidi, 217 (3), 1900606, 2020.

82.        Y. Zhang, L. Tao, D. Yi, J.B. Xu, H.K. Tsang, “Enhanced four-wave mixing with MoS2 on a silicon waveguide,” Journal of Optics 22 (2), 025503, 2020.

83.        Y. Zhang, L. Tao, D. Yi, J Xu, H.K. Tsang, “Enhanced thermo-optic nonlinearities in a MoS2-on-silicon microring resonator,” Applied Physics Express 13 (2), 022004, 2020.

84.        Y. Tong, Z. Hu, X. Wu, S. Liu, L. Chang, A. Netherton, C.-K. Chan, J. E. Bowers, and H. K. Tsang, “An experimental demonstration of 160-Gbit/s PAM-4 using a silicon micro-ring modulator,” IEEE Photonics Technology Letters 32 (2), 125-128, 2019.

85.        Z. Yu, Y. Wang, B. Sun, Y. Tong, J.B. Xu, H.K. Tsang, X. Sun, “Hybrid 2D‐Material Photonics with Bound States in the Continuum,” Advanced Optical Materials 7 (24), 1901306, 2019.

86.        Z. Hu, Y Shao, X. Ouyang, Y. Tong, J. Zhao, H.K. Tsang, P.D. Townsend, C.K. Chan, “Experimental demonstration of 111.1-Gb/s net information rate using IM/DD probabilistically shaped orthogonal chirp-division multiplexing with a 10-GHz-class modulator,” Optics Express 27 (23), 33789-33798, 2019.

87.        Z. Zhang, Y. Wang, H.K. Tsang, “Ultracompact 40-channel arrayed waveguide grating on silicon nitride platform at 860 nm,” IEEE Journal of Quantum Electronics 56 (1), art.8400308,  2020.

88.        Y. Tong, W. Zhou, X. Wu, H.K. Tsang, “Efficient mode multiplexer for few-mode fibers using integrated silicon-on-insulator waveguide grating coupler,” IEEE Journal of Quantum Electronics 56 (1), article 8400107, 2020.

89.        R.R. Kumar, M. Raevskaia, V. Pogoretskii, Y. Jiao, H.K. Tsang, “InP membrane micro-ring resonator for generating heralded single photons,” Journal of Optics 21 (11), 115201, 2019.

90.        Z. Yu, X. Xi, J. Ma, H.K. Tsang, C.L. Zou, X. Sun, “Photonic integrated circuits with bound states in the continuum,” Optica 6 (10), 1342-1348, 2019.

91.        B.Q. Zhu, M.Y. Chen, Q. Zhu, G.D. Zhou, N.M. Abdelazim, W. Zhou, S.V. Kershaw, A.L.Rogach, N.Zhao and H.K. Tsang, “Integrated plasmonic infrared photodetector based on colloidal HgTe quantum dots,” Advanced Materials Technologies 4 (10), 1900354, 2019.

92.        W. Zhou, Y. Tong, X. Sun, H.K. Tsang, “Hyperuniform disordered photonic bandgap polarizers,” Journal of Applied Physics 126 (11), 113106, 2019.

93.        G.H. Chen, C.W. Chow, C.H. Yeh, C.W. Peng, P.C. Guo, J.F. Tsai, M.W. Cheng, Y. Tong, H.K. Tsang, “Mode-division-multiplexing (MDM) of 9.4-Tbit/s OFDM signals on silicon-on-insulator (SOI) platform,” IEEE Access 7, 129104-129111, 2019.

94.        W. Zhou, Y. Tong, X. Sun, H.K. Tsang, “Ultra-broadband hyperuniform disordered silicon photonic polarizers,” IEEE Journal of Selected Topics in Quantum Electronics 26 (2), 1-9, 2019.

95.        W. Zhou, H.K. Tsang, “Dual-wavelength-band subwavelength grating coupler operating in the near infrared and extended shortwave infrared,” Optics Letters 44 (15), 3621-3624, 2019.

96.        Y. Tong, Q. Zhang, X. Wu, C. Shu, H.K. Tsang, “112 Gb/s 16-QAM OFDM for 80-km data center interconnects using silicon Photonic integrated circuits and Kramers–Kronig detection,” Journal of Lightwave Technology 37 (14), 3532-3538, 2019.

97.        W. Zhou, Z. Cheng, X. Chen, K. Xu, X. Sun, H.K. Tsang, “Subwavelength Engineering in Silicon Photonic Devices,” IEEE Journal of Selected Topics in Quantum Electronics 25 (3), 2900113, 2019.

98.        Jain, N. Hosseinzadeh, X.Wu, H.K. Tsang, R. Helkey, J.Bowers, J.F. Buckwalter, “A high spur-free dynamic range silicon DC Kerr ring modulator for RF applications,” Journal of Lightwave Technology 37 (13), 3261-3272, 2019.

99.        Y. Gao, G. Zhou, H.K. Tsang, C. Shu, “High-speed van der Waals Heterostructure tunneling photodiodes integrated on silicon nitride waveguides,” Optica 6 (4), 514-517, 2019.

100.    S. Liu, X. Wu, D. Jung, J.C. Norman, M.J. Kennedy, H.K. Tsang, A.C. Gossard and John E. Bowers, “High-channel-count 20 GHz passively mode-locked quantum dot laser directly grown on Si with 4.1 Tbit/s transmission capacity,” Optica 6 (2), 128-134, 2019.

101.    Y. Tong, C.W. Chow, G.H. Chen, C.W. Peng, C.H. Yeh, H.K. Tsang, “Integrated silicon photonics remote radio frontend (RRF) for single-sideband (SSB) millimeter-wave radio-over-fiber (ROF) systems,” IEEE Photonics Journal 11 (2), 1-8, 2019.

102.    H. Wu, C. Li, L. Song, H.K. Tsang, J.E. Bowers, D. Dai, “Ultra‐sharp multimode waveguide bends with subwavelength gratings,” Laser & Photonics Reviews 13 (2), 1800119, 2019.

103.    R.R. Kumar, M. Raevskaia, V. Pogoretskii, Y. Jiao, H.K. Tsang, “Entangled photon pair generation from an InP membrane micro-ring resonator,” Applied Physics Letters 114 (2), 021104, 2019.

104.    Y. Tong, W. Zhou, H.K. Tsang, “Efficient perfectly vertical grating coupler for multi-core fibers fabricated with 193 nm DUV lithography,” Optics Letters 43 (23), 5709-5712, 2018.

105.    Y. Tong, Q. Zhang, X. Wu, C.W. Chow, C. Shu, H.K. Tsang, “Integrated germanium-on-silicon Franz–Keldysh vector modulator used with a Kramers–Kronig receiver,” Optics Letters 43 (18), 4333-4336, 2018.

106.    T.H. Xiao, Z Zhao, W. Zhou, M Takenaka, H.K. Tsang, Z. Cheng, K Goda, “High-Q germanium optical nanocavity,” Photonics Research 6 (9), 925-928, 2018.

107.    G. Chen, J. Du, L. Sun, L. Zheng, K. Xu, H.K. Tsang, X. Chen, G.T. Reed, Z. He, “Machine learning adaptive receiver for PAM-4 modulated optical interconnection based on silicon microring modulator,” Journal of Lightwave Technology 36 (18), 4106-4113, 2018.

108.    Y. Tong, Z. Hu, X. Wu, J. Liu, C.K.  Chan, C. Shu, H.K. Tsang, “Negative frequency-chirped 112-Gb/s PAM-4 using an integrated germanium Franz-Keldysh modulator,” IEEE Photonics Technology Letters 30 (16), 1443-1446, 2018.

109.    T.H. Xiao, Z. Zhao, W. Zhou, CY Chang, S.Y. Set, M Takenaka, H.K. Tsang, Z.Cheng, and K. Goda, “Mid-infrared high-Q germanium microring resonator,” Optics Letters 43 (12), 2885-2888, 2018.

110.    W. Zhou, Z. Cheng, X. Sun, H.K. Tsang, “Tailorable dual-wavelength-band coupling in a transverse-electric-mode focusing subwavelength grating coupler,” Optics Letters 43 (12), 2985-2988, 2018.

111.    Y. Yin, J. Li, Y. Xu, H.K. Tsang, D. Dai, “Silicon-graphene photonic devices,” Journal of Semiconductors 39 (6), 061009, 2018.

112.    Y. Gao, L. Tao, H.K. Tsang, C. Shu, “Graphene-on-silicon nitride waveguide photodetector with interdigital contacts,” Applied Physics Letters 112 (21), 211107, 2018.

113.    Y. Hsu, C.Y. Chuang, X. Wu, G.H. Chen, CW Hsu, YC Chang, C.W. Chow, J. Chen, Y.C. Lai, C.H. Yeh, and H.K. Tsang, “2.6 Tbit/s on-chip optical interconnect supporting mode-division-multiplexing and PAM-4 signal,” IEEE Photonics Technology Letters 30 (11), 1052-1055, 2018.

114.    Y. Gao, G. Zhou, N. Zhao, H.K. Tsang, C. Shu, “High-performance chemical vapor deposited graphene-on-silicon nitride waveguide photodetectors,” Optics Letters 43 (6), 1399-1402, 2018.

115.    J. Liu, X. Wu, C Huang, H.K. Tsang, C. Shu, “Compensation of dispersion-induced power fading in analog photonic links by gain-transparent SBS,” IEEE Photonics Technology Letters 30 (8), 688-691, 2018.

116.    W. Zhou, Z. Cheng, X. Wu, X. Sun, H.K. Tsang, “Fully suspended slot waveguide platform,” Journal of Applied Physics 123 (6), 063103, 2018.

117.    X. Wu, C Huang, K. Xu, W. Zhou, C. Shu, H.K. Tsang, “3× 104 Gb/s single-λ interconnect of mode-division multiplexed network with a multicore fiber,” Journal of Lightwave Technology 36 (2), 318-324, 2018.

118.    Y. Gao, H.K. Tsang, C. Shu, “A silicon nitride waveguide-integrated chemical vapor deposited graphene photodetector with 38 GHz bandwidth,” Nanoscale 10 (46), 21851-21856, 2018.

119.    D. Dai, C. Li, S. Wang, H. Wu, Y. Shi, Z Wu, S. Gao, T. Dai, H Yu, H.K. Tsang, “10‐Channel Mode (de) multiplexer with dual polarizations,” Laser & Photonics Reviews 12 (1), 1700109, 2018.

120.    T.C. Tzu, Y. Hsu, C.Y. Chuang, X. Wu, C.W. Chow, J Chen, C.H. Yeh, H.K. Tsang, “Equalization of PAM-4 signal generated by silicon microring modulator for 64-Gbit/s transmission,” Journal of Lightwave Technology 35 (22), 4943-4948, 2017.

121.    X. Wu, K. Xu, W. Zhou, C.W. Chow, H.K. Tsang, “Scalable ultra-wideband pulse generation based on silicon photonic integrated circuits,” IEEE Photonics Technology Letters 29 (21), 1896-1899, 2017.

122.    X. Ding, B.P. Yan, Y.T. Zhang, J. Liu, N. Zhao, H.K. Tsang, “Pulse transit time based continuous cuffless blood pressure estimation: A. New extension and a comprehensive evaluation,” Scientific reports 7 (1), 11554, 2017.

123.    T.H. Xiao, Z. Zhao, W. Zhou, M. Takenaka, H.K. Tsang, Z. Cheng, K. Goda, “Mid-infrared germanium photonic crystal cavity,” Optics Letters 42 (15), 2882-2885, 2017.

124.    X. Wu, C. Huang, K. Xu, C. Shu, H.K. Tsang, “Mode-division multiplexing for silicon photonic network-on-chip,” Journal of Lightwave Technology 35 (15), 3223-3228, 2017.

125.    Y. Zhang, L. Wang, Z. Cheng, H.K. Tsang, “Forward stimulated Brillouin scattering in silicon microring resonators,” Applied Physics Letters 111 (4), 041104, 2017.

126.    S. Wang, X Feng, S. Gao, Y. Shi, T. Dai, H Yu, H.K. Tsang, D. Dai, “On-chip reconfigurable optical add-drop multiplexer for hybrid wavelength/mode-division-multiplexing systems,” Optics Letters 42 (14), 2802-2805, 2017.

127.    J. Kang, Z. Cheng, W. Zhou, T.H. Xiao, K.L. Gopalakrisna, M. Takenaka, H.K. Tsang, K. Goda., “Focusing subwavelength grating coupler for mid-infrared suspended membrane germanium waveguides,” Optics Letters 42 (11), 2094-2097, 2017.

128.    Y. Gao, W. Zhou, X. Sun, H.K. Tsang, C. Shu, “Cavity-enhanced thermo-optic bistability and hysteresis in a graphene-on-Si3N4 ring resonator,” Optics Letters 42 (10), 1950-1953, 2017.

129.    W. Zhou, Z. Cheng, X. Wu, B. Zhu, X. Sun, H.K. Tsang, “Fully suspended slot waveguides for high refractive index sensitivity,” Optics Letters 42 (7), 1245-1248, 2017.

130.    Z. Chen, X Li, J. Wang, L. Tao, M. Long, S.J. Liang, L.K. Ang, C. Shu, H.K. Tsang, J.B.Xu, “Synergistic effects of plasmonics and electron trapping in graphene short-wave infrared photodetectors with ultrahigh responsivity,” ACS Nano 11 (1), 430-437, 2017.

131.    W. Zhou, Z. Yu, J. Ma, B. Zhu, H.K. Tsang, X. Sun, “Ultraviolet optomechanical crystal cavities with ultrasmall modal Mass and high optomechanical coupling rate,” Scientific Reports 6 (1), 1-12, 2016.

132.    S. Wang, H. Wu, H.K. Tsang, D. Dai, “Monolithically integrated reconfigurable add-drop multiplexer for mode-division-multiplexing systems,” Optics Letters 41 (22), 5298-5301, 2016.

133.    S. Liu, K. Xu, Q. Song, Z. Cheng, H.K. Tsang, “Design of mid-infrared electro-optic modulators based on aluminum nitride waveguides,” Journal of Lightwave Technology 34 (16), 3837-3842, 2016.

134.    X. Wu, C. Huang, K. Xu, C. Shu, H.K. Tsang, “128-Gb/s line rate OFDM signal modulation using an integrated silicon microring modulator,” IEEE Photonics Technology Letters 28 (19), 2058-2061, 2016.

135.    B.Q. Zhu, H.K. Tsang, “High coupling efficiency silicon waveguide to metal–insulator–metal waveguide mode converter,” Journal of Lightwave Technology 34 (10), 2467-2472, 2016.

136.    Y. Zhang, Z. Cheng, L. Liu, B. Zhu, J. Wang, W. Zhou, X. Wu, H.K. Tsang, “Enhancement of self-phase modulation induced spectral broadening in silicon suspended membrane waveguides,” Journal of Optics 18 (5), 055503, 2016.

137.    W. Zhou, Z. Cheng, B. Zhu, X. Sun, H.K. Tsang, “Hyperuniform disordered network polarizers,” IEEE Journal of Selected Topics in Quantum Electronics 22 (6), 288-294, 2016.

138.    Y. Liu, Y. Hsu, C.W. Chow, L.G. Yang, C.H. Yeh, Y.C. Lai, H.K. Tsang, “110 GHz hybrid mode-locked fiber laser with enhanced extinction ratio based on nonlinear silicon-on-insulator micro-ring-resonator (SOI MRR),” Laser Physics Letters 13 (3), 035101, 2016.

139.    X. Ding, Y. Zhang, H.K. Tsang, “Impact of heart disease and calibration interval on accuracy of pulse transit time–based blood pressure estimation,” Physiological Measurement 37 (2), 227, 2016.

140.    J. Wang, Z. Cheng, Z. Chen, X Wan, B. Zhu, H.K. Tsang, C. Shu, J. Xu, “High-responsivity graphene-on-silicon slot waveguide photodetectors,” Nanoscale 8 (27), 13206-13211, 2016.

141.    Y. Liu, Y. Hsu, C.W. Hsu, L.G. Yang, C.W. Chow, C.H. Yeh, Y.C. Lai, H.K. Tsang, “Narrow line-width single-longitudinal-mode fiber laser using silicon-on-insulator based micro-ring-resonator,” Laser Physics Letters 13 (2), 025102, 2015.

142.    K. Xu, X. Wu, J.Y. Sung, Z. Cheng, C.W. Chow, Q.H. Song, H.K. Tsang, “Amplitude and phase modulation of UWB monocycle pulses on a silicon photonic chip,” IEEE Photonics Technology Letters 28 (3), 248-251, 2015.

143.    L. Liu, K. Xu, X. Wan, J. Xu, C.Y. Wong, H.K. Tsang, “Enhanced optical Kerr nonlinearity of MoS2 on silicon waveguides,” Photonics Research 3 (5), 206-209, 2015.

144.    X.R. Ding, YT Zhang, J. Liu, W.X. Dai, H.K. Tsang, “Continuous cuffless blood pressure estimation using pulse transit time and photoplethysmogram intensity ratio,” IEEE Transactions on Biomedical Engineering 63 (5), 964-972, 2015.

145.    Z. Chen, Z. Cheng, J. Wang, X Wan, C. Shu, H.K. Tsang, H.P. Ho, J.B. Xu, “High responsivity, broadband, and fast graphene/silicon photodetector in photoconductor mode,” Advanced Optical Materials 3 (9), 1207-1214, 2015.

146.    J. Wang, Z. Cheng, C. Shu, H.K. Tsang, “Optical absorption in graphene-on-silicon nitride microring resonators,” IEEE Photonics Technology Letters 27 (16), 1765-1767, 2015.

147.    J. Wang, Z. Cheng, Z. Chen, J.B. Xu, H.K. Tsang, C. Shu, “Graphene photodetector integrated on silicon nitride waveguide,” Journal of Applied Physics 117 (14), 144504, 2015.

148.    K. Xu, J.Y. Sung, C.Y. Wong, Z. Cheng, C.W. Chow, H.K. Tsang, “Optical Nyquist filters based on silicon coupled resonator optical waveguides,” Optics Communications 329, 23-27, 2014.

149.    J.Y. Sung, C.W. Chow, C.H. Yeh, K. Xu, C.W. Hsu, H.Q. Su, H.K. Tsang, “A secure WDM ring access network employing silicon micro-ring based remote node,” Optical Fiber Technology 20 (4), 336-340, 2014.

150.    L.G. Yang, S.S. Jyu, C.W. Chow, C.H. Yeh, C.Y. Wong, H.K. Tsang, Y. Lai, “A 110 GHz passive mode-locked fiber laser based on a nonlinear silicon-micro-ring-resonator,” Laser Physics Letters 11 (6), 065101, 2014.

151.    Z. Cheng, H.K. Tsang, “Experimental demonstration of polarization-insensitive air-cladding grating couplers for silicon-on-insulator waveguides,” Optics Letters 39 (7), 2206-2209, 2014.

152.    Z. Cheng, Z Li, K. Xu, H.K. Tsang, “Increase of the grating coupler bandwidth with a graphene overlay,” Applied Physics Letters 104 (11), 111109, 2014.

153.    C.Y. Wong, F.W. Tong, Z. Cheng, K. Xu, Y.M. Chen, H.K. Tsang, “Stabilization of a multiwavelength erbium-doped fiber laser using a nonlinear silicon waveguide,” Applied Physics B 114, 367-371, 2014.

154.    X. Wang, Z. Cheng, K. Xu, H.K. Tsang, J.B. Xu, “High-responsivity graphene/silicon-heterostructure waveguide photodetectors,” Nature Photonics 7 (11), 888-891, 2013.

155.    C.W. Chow, C.H. Yeh, K. Xu, J.Y. Sung, H.K. Tsang, “TWDM-PON with signal remodulation and Rayleigh noise circumvention for NG-PON2,” IEEE Photonics Journal 5 (6), 7902306-7902306, 2013.

156.    S.S. Jyu, L.G. Yang, C.Y. Wong, C.H. Yeh, C.W. Chow, H.K. Tsang, Y Lai, “250-GHz passive harmonic mode-locked Er-doped fiber laser by dissipative four-wave mixing with silicon-based micro-ring,” IEEE Photonics Journal 5 (5), 1502107-1502107, 2013.

157.    K. Xu, Z. Cheng, C.Y. Wong, H.K. Tsang, “UWB monocycle pulse generation based on colourless silicon photonic integrated circuit,” Electronics Letters 49 (20), 1291-1293, 2013.

158.    K. Xu, L.G. Yang, J.Y. Sung, Y.M. Chen, Z.Z. Cheng, C.W. Chow, C.H. Yeh, H.K.Tsang, “Compatibility of silicon Mach-Zehnder modulators for advanced modulation formats,” Journal of Lightwave Technology 31 (15), 2550-2554, 2013.

159.    Z. Cheng, H.K. Tsang, K. Xu, Z. Shi, “Spectral hole burning in silicon waveguides with a graphene layer on top,” Optics Letters 38 (11), 1930-1932, 2013.

160.    Z. Cheng, H.K. Tsang, X. Wang, K. Xu, J.B. Xu, “In-plane optical absorption and free carrier absorption in graphene-on-silicon waveguides,” IEEE Journal of Selected Topics in Quantum Electronics 20 (1), 43-48, 2013.

161.    L.G. Yang, C.H. Yeh, C.Y. Wong, C.W. Chow, F.G. Tseng, H.K. Tsang, “Stable and wavelength-tunable silicon-micro-ring-resonator based erbium-doped fiber laser,” Optics Express 21 (3), 2869-2874, 2013.

162.    X. Guo, G.K.P. Lei, X Fu, H.K. Tsang, C. Shu, “Polarization-insensitive phase-preserving regenerator based on a fiber optical parametric amplifier with dual orthogonal pumps,” IEEE Photonics Technology Letters 25 (4), 362-364, 2012.

163.    Z. Cheng, X. Chen, C.Y. Wong, K. Xu, H.K. Tsang, “Broadband focusing grating couplers for suspended-membrane waveguides,” Optics Letters 37 (24), 5181-5183, 2012.

164.    K. Xu, Z. Cheng, C.Y. Wong, H.K. Tsang, “Tunable integrated variable bit-rate DPSK silicon receiver,” Optics Letters 37 (22), 4738-4740, 2012.

165.    Y.F. Liu, C.H. Yeh, C.W. Chow, Y. Liu, Y.L. Liu, H.K. Tsang, “Demonstration of bi-directional LED visible light communication using TDD traffic with mitigation of reflection interference,” Optics Express 20 (21), 23019-23024, 2012.

166.    Z. Cheng, X. Chen, C.Y. Wong, K. Xu, H.K. Tsang, “Apodized focusing subwavelength grating couplers for suspended membrane waveguides,” Applied Physics Letters 101 (10), 101104, 2012.

167.    X. Chen, K. Xu, Z. Cheng, C.K.Y. Fung, H.K. Tsang, “Wideband subwavelength gratings for coupling between silicon-on-insulator waveguides and optical fibers,” Optics Letters 37 (17), 3483-3485, 2012.

168.    K. Xu, L. Wang, G.K.P. Lei, Z. Cheng, Y. Chen, C.Y. Wong, C. Shu, H.K. Tsang, “Demodulation of 20 Gbaud/s differential quadrature phase-shift keying signals using wavelength-tunable silicon microring resonators,” Optics Letters 37 (16), 3462-3464, 2012.

169.    Z. Cheng, X. Chen, C.Y. Wong, K. Xu, H.K. Tsang, “Mid-infrared suspended membrane waveguide and ring resonator on silicon-on-insulator,” IEEE Photonics Journal 4 (5), 1510-1519, 2012.

170.    K. Xu, Y. Chen, C. Li, X. Chen, Z. Cheng, C.Y. Wong, H.K. Tsang, “An ultracompact OSNR monitor based on an integrated silicon microdisk resonator,” IEEE Photonics Journal 4 (5), 1365-1371, 2012.

171.    C.H. Yeh, Y.F. Liu, C.W. Chow, Y. Liu, P.Y. Huang, H.K. Tsang, “Investigation of 4-ASK modulation with digital filtering to increase 20 times of direct modulation speed of white-light LED visible light communication system,” Optics Express 20 (15), 16218-16223, 2012.

172.    L. Wang, Y. Chen, H.K. Tsang, C. Shu, “Generation of Multichannel Delayed Pulses by Four-Wave-Mixing-Assisted Stimulated Brillouin Scattering Slow-Light System,” IEEE Photonics Journal 4 (4), 1203-1211, 2012.

173.    C.Y. Wong, Z. Cheng, X. Chen, K. Xu, C.K.Y. Fung, Y.M. Chen, H.K. Tsang, “Characterization of mid-infrared silicon-on-sapphire microring resonators with thermal tuning,” IEEE Photonics Journal 4 (4), 1095-1102, 2012.

174.    K. Xu, G.K.P. Lei, S.M.G. Lo, Z. Cheng, C. Shu, H.K. Tsang, “Bit-rate-variable DPSK demodulation using silicon microring resonators with electro-optic wavelength tuning,” IEEE Photonics Technology Letters 24 (14), 1221-1223, 2012.

175.    Z. Cheng, X. Chen, C.Y. Wong, K. Xu, C.K.Y. Fung, Y.M. Chen, H.K. Tsang, “Focusing subwavelength grating coupler for mid-infrared suspended membrane waveguide,” Optics Letters 37 (7), 1217-1219, 2012.

176.    Z. Cheng, X. Chen, C.Y. Wong, K. Xu, C.K.Y. Fung, Y.M. Chen, H.K. Tsang, “Mid-infrared grating couplers for silicon-on-sapphire waveguides,” IEEE Photonics Journal 4 (1), 104-113, 2011.

177.    K. Xu, H.K. Tsang, G.K.P. Lei, Y.M. Chen, L. Wang, Z. Cheng, X. Chen, C. Shu, “OSNR monitoring for NRZ-PSK signals using silicon waveguide two-photon absorption,” IEEE Photonics Journal 3 (5), 968-974, 2011.

178.    A.W. Poon, L. Zhou, J. Chen, Y.Z. Huang, J. Yu, J.J. He, H.K. Tsang, “Integrated Photonics Research in China,” Optics and Photonics News 22 (9), 22-29, 2011.

179.    L. Xu, C.W. Chow, H.K. Tsang, “Bidirectional colorless wired and wireless WDM-PON with improved dispersion tolerance for radio over fiber,” Optics Communications 284 (14), 3518-3521, 2011.

180.    C.W. Chow, C.H. Yeh, S.M.G. Lo, C. Li, H.K. Tsang, “Long-reach radio-over-fiber signal distribution using single-sideband signal generated by a silicon-modulator,” Optics express 19 (12), 11312-11317, 2011.

181.    L. Xu, X. Chen, C. Li, H.K. Tsang, “Bi-wavelength two dimensional chirped grating couplers for low cost WDM PON transceivers,” Optics Communications 284 (8), 2242-2244, 2011.

182.    X. Chen, H.K. Tsang, “Polarization-independent grating couplers for silicon-on-insulator nanophotonic waveguides,” Optics Letters 36 (6), 796-798, 2011.

183.    L. Xu, C. Li, C.Y. Wong, H.K. Tsang, “DQPSK demodulation using integrated silicon microring resonators,” Optics Communications 284 (1), 172-175, 2011.

184.    X. Chen, C. Li, H.K. Tsang, “Device engineering for silicon photonics,” NPG Asia Materials 3 (1), 34-40, 2011.

185.    L. Xu, C.W. Chow, H.K. Tsang, “Long-reach multicast high split-ratio wired and wireless WDM-PON using SOA for remote upconversion,” IEEE transactions on microwave theory and techniques 58 (11), 3136-3143, 2010.

186.    C.W. Chow, C.H. Yeh, L. Xu, H.K. Tsang, “Rayleigh backscattering mitigation using wavelength splitting for heterogeneous optical wired and wireless access,” IEEE Photonics Technology Letters 22 (17), 1294-1296, 2010.

187.    X. Chen, C. Li, C.K.Y. Fung, S.M.G. Lo, H.K. Tsang, “Apodized waveguide grating couplers for efficient coupling to optical fibers,” IEEE Photonics Technology Letters 22 (15), 1156-1158, 2010.

188.    X. Chen, C. Li, H.K. Tsang, “Two dimensional silicon waveguide chirped grating couplers for vertical optical fibers,” Optics Communications 283 (10), 2146-2149, 2010.

189.    L. Xu, H.K. Tsang, “Nonreciprocal optical modulation for colorless integrated optical transceivers in passive optical networks,” Journal of Optical Communications and Networking 2 (3), 131-136, 2010.

190.    C.W. Chow, L. Xu, C.H. Yeh, H.K. Tsang, W. Hofmann, M.C. Amann, “40-Gb/s Upstream Transmitters Using Directly Modulated 1.55um VCSEL Array for High-Split-Ratio PONs,” IEEE Photonics Technology Letters 22 (5), 347-349, 2010.

191.    X. Chen, H.K. Tsang, “Nanoholes grating couplers for coupling between silicon-on-insulator waveguides and optical fibers,” IEEE Photonics Journal 1 (3), 184-190, 2009.

192.    C.W. Chow, L. Xu, C.H. Yeh, C.H. Wang, F.Y. Shih, H.K. Tsang, C.L. Pan, S. Chi, “Mitigation of signal distortions using reference signal distribution with colorless remote antenna units for radio-over-fiber applications,” Journal of Lightwave Technology 27 (21), 4773-4780, 2009.

193.    L. Xu, C. Li, H.K. Tsang, C.W. Chow, “Optical frequency doubling for multichannel radio-over-fibre system based on integrated phase modulator and silicon coupled microring notch filter,” Electronics Letters 45 (13), 697, 2009.

194.    C.M. Sun, H.K. Tsang, S.P. Wong, WY Cheung, N. Ke, MA Lourenço, K.P.Homewood, “Electroluminescence from metal–oxide–silicon tunneling diode with ion-beam-synthesized β-FeSi2 precipitates embedded in the active region,” Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms,  267(7), 1081-1084, 2009.

195.    X. Chen, C. Li, H.K. Tsang, “Etched Waveguide Grating Variable 12 Splitter/Combiner and Waveguide Coupler,” IEEE Photonics Technology Letters 21 (5), 268-270, 2009.

196.    L. Xu, C. Li, C Wong, H.K. Tsang, “Optical differential-phase-shift-keying demodulation using a silicon microring resonator,” IEEE Photonics Technology Letters 21 (5), 295-297, 2009.

197.    L. Xu, C. Li, C.W. Chow, H.K. Tsang, “Optical mm-wave signal generation by frequency quadrupling using an optical modulator and a silicon microresonator filter,” IEEE Photonics Technology Letters 21 (4), 209-211, 2008.

198.    C.M. Sun, H.K. Tsang, S.P. Wong, N. Ke, S.K. Hark, “Correlation between impurities in Fe–Si amorphous layers synthesized by Fe implantation and photoluminescence property of β-FeSi2 precipitates in Si,” Journal of luminescence 128 (11), 1841-1845, 2008.

199.    X. Chen, C. Li, H.K. Tsang, “Fabrication-tolerant waveguide chirped grating coupler for coupling to a perfectly vertical optical fiber,” IEEE Photonics Technology Letters 20 (23), 1914-1916, 2008.

200.    H.K. Tsang, Y. Liu, “Nonlinear optical properties of silicon waveguides,” Semiconductor Science and Technology 23 (6), 064007, 2008.

Last update: July 2024