Description: photographDr. Hon Ki TSANG  BA, MA(Cantab.), Ph.D., Fellow of IEEE, Fellow of Optica,  Chartered Engineer, MIET, MHKIE
Wei Lun Professor of Electronic Engineering


Hon Tsang’s short CV

 Hon Ki Tsang is the Wei Lun Professor of Electronic Engineering at the Chinese University of Hong Kong. He has served as  Chairman of the Department of Electronic Engineering (2010-2016), Associate Dean (Research) of the Faculty of Engineering (2018-23) and he is currently serving as the Interim Dean of the Faculty of Engineering. He is also the current Editor-in-Chief of IEEE Journal of Quantum Electronics. He is a Fellow of IEEE and a Fellow of Optica (Optica was formerly the Optical Society (OSA)).

Tsang's Research Group (August 2022, photo taken by: Dr Yuanfei Zhang)

Description: photograph

Tsang’s Biography

Hon 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 pursued graduate studies and completed a PhD at Cambridge University in 1991. His PhD dissertation was on “III-V semiconductor waveguides devices and their nonlinear optical properties”. He was postdoctoral fellow in the School of Physics, University of Bath for almost 3 years before joining CUHK in September 1993. After struggling unsuccessfully to establish a clean room for III-V device fabrication in CUHK, he shifted his research to the the emerging field of silicon photonics in 2000. From its small beginnings, attracting interest from only a handful of groups, silicon photonics has grown to be an exciting area of research (watch Tsang’s interview by OSA) in the last 25 years to become a mainstream technology for high speed energy efficient communications.  It has become a key technology for optical interconnects in data centers, with large volume of Si photonics transceivers being manufactured by companies such as Intel.  Despite the apparent technological maturity and commercial success of silicon photonics transceivers, silicon photonics today remains a fruitful topic for academic research because there remains many important potential future applications that are relatively unexplored. Energy efficient on-chip optical interconnects for high performance computers, low-cost integrated gas sensors and integrated biosensors, and integrated quantum photonic devices for quantum computing, quantum metrology and quantum communications are examples ripe for academic research. Tsang’s contributions to the field of Si photonics include early work on the nonlinear properties of guided wave optics in silicon waveguides: he carried out some of 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 still very relevant today in the design of silicon nanophotonic integrated circuits 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. At the end of 2001 Tsang joined Bookham Technology plc,  to work on the commercialization of silicon photonics.  At Bookham he led the R&D team on silicon waveguide variable optical attenuator arrays which were qualified and commercially deployed to carry live traffic in telecommunications networks.  Those early silicon photonic products enabled dynamic balancing of optical power levels during the reconfiguration of Wavelength Division Multiplexed (WDM) telecommunication networks. Tsang rturened to CUHK in summer 2003 and he has since continued to advance the field of silicon photonics. 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 one of the highest modulator data rates >300Gb/s. Tsang has a keen interest in knowledge transfer and two major research projects with potential for commercialization include advanced silicon photonics for mode-division-multiplexed communications in multimode fibers, and the development of photonics systems-on-chip  for optical coherence tomography and imaging. He also has longer term academic research interests on

·         Integrated quantum photonics for quantum metrology

·         Hybrid integration on silicon including the use of  2D materials (such as graphene, MoS2, WS2 WSe2 , hBN etc) and III-V semiconductors for photodetectors, modulators and lasers

·        Tunable silicon Raman lasers for spectroscopic gas monitoring

Ongoing Research Grants as Principal Investigator


Funding Agency




Multimode Waveguide Grating Couplers  (14203620)





Integrated Spectrometer for Dynamic Optical Coherence Tomography  (MRP/066/020)





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





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




Coherent Microresonator Networks for Reconfigurable Photonic Integrated Circuits (14204623)





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





GRF Descriptions available from RGC search






Possible Openings for PhD students and Postdocs

Please email Prof Tsang if you are interested in joining his group as PhD student or postdoctoral fellow.  These positions are subject to the availability of new research grant funding (on average one or two new grants are awarded every year).  New Postdoctoral fellows can be supported by the ITF Research Talent Hub scheme. Postdoc candidates should have good publication records satisfying the talent hub requirements.  Please email Prof. Tsang to inquire about possible new vacancies from pending grant applications.

Prof. Tsang’s research grants are usually fully used for existing students but new grants may become available which can support candidates interested in pursuing a PhD  in photonics. Please submit your formal applications to the Electronic Engineering graduate division and CUHK before 1 December of each year.  Financial support of graduate students via postgraduate studentship (PGS) of  $216300 per year (2020-21 rates). Top ~1% academic credentials may qualify you for nomination to  RGC PhD fellowship  which has a higher level of financial support  of $26,900 per month (HKD322,800 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.Yi Wang,  Dr Hongnan XU, Dr Dan Yi, Dr Kazi Rony,  Dr David W.U Chan, Dr Xuetong Zhou

Research Students, Gaolei Hu, Jiapeng Luan, Keyi Zhong, Yue Qin, Shuqi Xiao, Zelu Wang, Chenfei Cui, Liang Zhang, Martin Wing Hei Leung, Zhao Caiyue

Recent PhD Alumni: Dr. Zunyue Zhang, Dr.Yaojing Zhang, Dr.Rakesh R. KUMAR, Dr Yeyu Yong, Dr Wen Zhou, Dr Xinru Wu

Recent Journal Publications

Tsang has  co-authored about 264 journal papers 280 conference papers.  The publications are listed on Researchgate.  A potentially more up to date list of  journal and conference publications may be found from the online publications databases such as: Scopus ID, ORCID ID: or Researcher ID. The list below contains journal papers published since 2013  (authors in bold are students/postdocs supervised by Tsang)

1.             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 381 6654, 2023,

2.             Dan Yi, X. Zhou and H.K. Tsang, "Dynamic Control of Distal Spatial Mode Pattern Output from Multimode Fiber using Integrated Coherent Network," in IEEE Photonics Journal, doi: 10.1109/JPHOT.2023.3305778. 2023

3.             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.

4.             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

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

6.             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.

7.             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.

8.             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.

9.             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.

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

11.          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.

12.          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.

13.          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.

14.          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.

15.          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.

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

17.          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.

18.          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.

19.          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.

20.          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.

21.          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.

22.          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.

23.          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.

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

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

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

27.          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.

28.          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.

29.          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.

30.          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.

31.          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.

32.          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.

33.          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.

34.          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.

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

36.          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.

37.          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.

38.          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.

39.          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.

40.          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.

41.          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.

42.          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.

43.          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.

44.          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.

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

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

47.          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.

48.          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.

49.          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.

50.          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.

51.          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.

52.          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.

53.          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.

54.          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.

55.          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.

56.          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.

57.          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.

58.          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.

59.          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.

60.          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.

61.          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.

62.          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.

63.          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.

64.          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.

65.          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.

66.          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.

67.          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.

68.          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.

69.          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.

70.          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.

71.          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.

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

73.          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.

74.          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.

75.          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.

76.          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.

77.          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.

78.          A. 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.

79.          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.

80.          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.

81.          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.

82.          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.

83.          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.

84.          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.

85.          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.

86.          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.

87.          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.

88.          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.

89.          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.

90.          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.

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

92.          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.

93.          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.

94.          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.

95.          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.

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

97.          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.

98.          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.

99.          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.

100.      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.

101.      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.

102.      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.

103.      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.

104.      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.

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

106.      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.

107.      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.

108.      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.

109.      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.

110.      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.

111.      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.

112.      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.

113.      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.

114.      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.

115.      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.

116.      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.

117.      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.

118.      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.

119.      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.

120.      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.

121.      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.

122.      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.

123.      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.

124.      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.

125.      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.

126.      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.

127.      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.

128.      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.

129.      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.

130.      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.

131.      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.

132.      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.

133.      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.

134.      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.

135.      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.

136.      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.

137.      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.

138.      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.

139.      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.

140.      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.

Last update: August 2023