Alan Pak Tao Lau
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Materials for Download

A.P.T. Lau, F. N. Khan and C. Lu, "Is there a role for Machine Learning in Optical Communications?" presented at ECOC 2017 workshop Opportunities for Machine Learning in Optical Communication: from Components Characterisation, Systems Design and Network Optimisation

F. N. Khan, Q. Fan, J. Lu, G. Zhou, C. Lu and A.P.T. Lau, "Applications of Machine Learning in Optical Communications," Tutorial Talk, OFC 2020
Invited Journal Publications

K. Zhong, X. Zhou, J. Huo, C. Yu, C. Lu and A.P.T. Lau, “Digital Signal Processing for ShortReach Optical Communications: A Review of Current Technologies and Future Trends,” Journal of Lightwave Technology, vol. 36, no. 2, pp. 377400, Jan. 2018.

Journal of Lightwave Technology, 2018.

Z. Dong, F. N. Khan, Q. Sui, K. Zhong, C. Lu, and A.P.T. Lau, "Optical Performance Monitoring: A Review of Current and Future Technologies." Journal of Lightwave Technology, vol. 34, no. 2, pp. 525543, Jan. 2016

K. Zhong, X. Zhou, T. Gui, L. Tao, Y. Gao, W. Chen, J. Man, Z. Li, A.P.T. Lau and C. Lu , “Experimental study of PAM4, CAP16, and DMT for 100 Gb/s Short Reach Optical Transmission Systems,” Optics Express, vol. 23, no. 2, pp. 11761189, Jan. 2015.

A. P. T. Lau, Y. Gao, Q. Sui, D. Wang, Q. Zhuge, M. MorsyOsman, M. Chagnon, X. Xu, C. Lu, and D. V. Plant, “Advanced DSP Techniques Enabling High Spectral Efficiency and Flexible Transmissions: Toward Elastic Optical Networks,” IEEE Signal Processing Magazine, vol. 31, no.2, pp. 82–92, Mar. 2014.

L. Tao, Y. Ji, J. Liu, A.P.T. Lau, N. Chi and C. Lu, “Advanced modulation formats for short reach optical communication systems,” IEEE Network, vol. 27, no. 6, pp. 613, Nov. 2013.

E. Ip, A.P.T. Lau, D.J.F. Barros and J.M. Kahn, “Coherent Detection in Optical Fiber Systems,” OSA Optics Express, pp. 753791, Jan. 2008
Book Chapters

A.P.T. Lau, F. N. Khan, Z. Dong, C. Lu and A.P.T. Lau, "Optical Performance Monitoring for FiberOptic Communication Networks," in "Enabling Technologies for High Spectralefficientcy Coherent Optical Communication Networks," Wiley Series in Microwave and Optical Engineering, 2016
Journal Publications
2017:

T. Gui, T.H. Chan, C. Lu, A.P.T. Lau and P.K.A. Wai, “Alternative Decoding Methods for Optical Communications Based on Nonlinear Fourier Transform,” Journal of Lightwave Technology, vol. 35, no. 9, pp. 1542 – 1550, May 1, 2017.

J. Liu, K. Zhong, Z. Dong, C. Guo, A.P.T. Lau, C. Lu and Y. Lu, “Signal power distribution based modulation format identification for coherent optical receivers,” Optical Fiber Technology, vol. 36, pp. 75 – 81, June 2017.

A.K. Azad, F. N. Khan, W. H. Alarashi, N. Guo, A.P.T. Lau and C. Lu, “Temperature extraction in Brillouin optical timedomain analysis sensors using principal component analysis based pattern recognition,” Optics Express, vol. 25, no. 14, pp. 16534 –16549, Jul. 2017.

F. N. Khan, K. Zhong, X. Zhou, W. H. AlArashi, C. Yu, C. Lu and A.P.T. Lau, “Joint OSNR monitoring and modulation format identification in digital coherent receivers using deep neural networks,” Optics Express, vol. 25, no. 15, pp. 1776717776, Jul. 2017.

T. Gui, C. Lu, A.P.T. Lau and P.K.A. Wai, “Highorder modulation on a single discrete eigenvalue for optical communications based on nonlinear Fourier transform,” Optics Express, vol. 25, no. 17, pp. 2028620297, Aug. 2017.
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2016:

Z. Dong, F. N. Khan, Q. Sui, K. Zhong, C. Lu, and A.P.T. Lau (Invited), "Optical Performance Monitoring: A Review of Current and Future Technologies." Journal of Lightwave Technology, vol. 34, no. 2, pp. 525543, Jan. 2016 .

H. Zhou, B. Li, M. Tang, K. Zhong, Z. Feng, J. Cheng, A.P.T. Lau, C. Lu, S. Fu, P. P. Shum and D. Liu, "Fractional Fourier TransformationBased Blind Chromatic Dispersion Estimation for Coherent Optical Communications." Journal of Lightwave Technology vol. 34, no. 10, pp. 23712380, May 2016.

F. N. Khan, C. Lu and A.P.T. Lau. "Joint modulation format/bitrate classification and signaltonoise ratio estimation in multipath fading channels using deep machine learning." Electronics Letters (2016).

X. Zhou, K. Zhong, J. Huo, L. Gao, Y. Wang, L. Wang, Y. Yang, J. Yuan, K. Long, L. Zeng, A.P.T. Lau, and C. Lu, "112 Gb/s transmission over 80 km SSMF using PDMPAM4 and coherent detection without optical amplifier," Optics Express vol. 24, no.15, pp. 1735917371, July 2016.

Y. Wang, Y. Zhou, T. Gui, Tao, K. Zhong, X. Zhou, L. Wang, A.P.T. Lau and C. Lu, “Efficient MMSESQRDBased MIMO Decoder for SEFDMBased 2.4Gb/sSpectrumCompressed WDM VLC System,” IEEE Photonics Journal, vol. 8, no. 4, Aug 2016

F. N. Khan, K. Zhong, A. Waled, C. Yu, C. Lu, and A.P.T. Lau. "Modulation Format Identification in Coherent Receivers Using Deep Machine Learning." IEEE Photonics Technology Letters, vol. 28, no. 17, pp. 18861889, Sept 2016.

K. Zhong, X. Zhou, Y. Wang, Y. Wang, W. Zhou, W. Chen, L. Zeng, L. Wang, A.P.T. Lau and C. Lu, “Transmission of a 120GBd PMNRZ Signal Using a Monolithic DoubleSide EML,” IEEE Photonics Technology Letters, vol. 28, no. 20, pp. 21762179, Oct. 2016.

K. Zhong, X. Zhou, Y. Wang, L. Wang, J.H. Yuan, C. Yu, A.P.T. Lau and C. Lu, “Experimental demonstration of 608Gbit/s short reach transmission employing halfcycle 16QAM NyquistSCM signal and direct detection with 25Gbps EML,” Optics Express, vol. 24, no. 22, pp. 25027 – 25067, Oct. 31, 2016.
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2015:

K. Zhong, X. Zhou, T. Gui, L. Tao, Y. Gao, W. Chen, J. Man, Z. Li, A.P.T. Lau and C. Lu (Invited), “Experimental study of PAM4, CAP16, and DMT for 100 Gb/s Short Reach Optical Transmission Systems,” Optics Express, vol. 23, no. 2, pp. 11761189, Jan. 2015.

Q. Sui, H. Zhang, J. D. Downie, W.A. Wood, J. Hurley, S. Mishra, A.P.T. Lau, C. Lu, H.Y. Tam and P.K.A. Wai, “Longhaul quasisinglemode transmissions using fewmode fiber in presence of multipath interference,” Optics Express, vol. 23, no. 3, pp. 31563169, Feb. 2015.

X. Zhou, K. Zhong, Y. Gao, Q. Sui, Z. Dong, J. Yuan, L. Wang, K. Long, A.P.T. Lau and C. Lu, “Polarizationinterleavemultiplexed discrete multitone modulation with direct detection utilizing MIMO equalization," Optics Express, vol. 23, no. 7, pp. 84098421, Apr 2015.

S. M. Balal, G. Bosco, J. Cheng, A.P.T. Lau and C. Lu, “Carrier Phase Estimation Through the Rotation Algorithm for 64QAM Optical Systems," Journal of Lightwave Technology, vol. 33, no. 9, pp.17661773, May 2015.

J. Cheng, M. Tang, A.P.T. Lau, C. Lu, L. Wang, Z. Dong, S. M. Bilal, S. Fu, P. P. Shum and D. Liu, “Pump RINinduced impairments in unrepeatered transmission systems using distributed Raman amplifier,” Optics Express, vol. 23, vo. 9, pp.1183811854, May 2015.

Y. Gao, Q. Zhuge, W. Wang, X. Xu, J. M. Buset, M. Qiu, M. MorsyOsman, M. Chagnon, F. Li, L. Wang, C. Lu, A.P.T. Lau and D. V. Plant, “40 Gb/s CAP32 short reach transmission over 80 km single mode fiber,” Optics Express, vol. 23, no. 9, pp.1141211423, May 2015.

Z. Dong, K. Zhong, X. Zhou, C. Lu, A.P.T. Lau, Y. Lu, L. Li, “Modulationformatindependent OSNR monitoring insensitive to cascaded filtering effects by lowcost coherent receptions and RF power measurements,” Optics Express, vol. 23, no. 12, pp.1597115982, Jun 2015.

Y. Yang, G. Cao, K. Zhong, X. Zhou, Y. Yao, A. P.T. Lau, and C. Lu, "Fast polarizationstate tracking scheme based on radius directed linear Kalman filter," Opt. Express 23, 1967319680 July 2015.

Z. Dong; S. Hari, T. Gui; K. Zhong; M.I. Yousefi, C. Lu, P.K.A. Wai, F.R. Kschischang and A.P.T. Lau, "Nonlinear Frequency Division Multiplexed Transmissions Based on NFT," in Photonics Technology Letters, IEEE , vol.27, no.15, pp.16211623, Aug.1, 2015

K. Zhong; X. Zhou Y. Gao; W. Chen; J. Man, L. Zeng, A.P.T. Lau and C. Lu, "140Gb/s 20km Transmission of PAM4 Signal at 1.3 um for Short Reach Communications," in IEEE Photonics Technology Letters, vol.27, no.16, pp.17571760, Aug.15, 2015

F. N. Khan, C. H. Teow, S. G. Kiu, M.C. Tan, Y. Zhou, W.H. AlArashi, A.P.T. Lau and C. Lu. "Automatic modulation format/bitrate classification and signaltonoise ratio estimation using asynchronous delaytap sampling." Computers & Electrical Engineering 47 (2015): 126133.

S. M. Bilal, G. Bosco, Z. Dong, A.P.T. Lau and C. Lu. "Blind modulation format identification for digital coherent receivers." Optics express 23, no. 20 (2015): 2676926778.

F. N. Khan, Y. Yu, M. C. Tan, W. H. AlArashi, C. Yu, A. P. T. Lau, and C. Lu. "Experimental demonstration of joint OSNR monitoring and modulation format identification using asynchronous single channel sampling." Optics express 23, no. 23 (2015): 30337 30346.

X. Zhou, K. Zhong, J. Huo, J. Yuan, F. Li, L. Wang, K. Long, A. P. T. Lau and C. Lu. "PolarizationMultiplexed DMT With IMDD Using 2×2 MIMO Processing Based on SOP Estimation and MPBI Elimination." IEEE Photonics Journal 7, no. 6 pp. 112, 2015.
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2014:

50. F.N. Khan, Y.D. Zhou, Q. Sui, A.P.T. Lau, “Nondataaided joint bitrate and modulation format identification for nextgeneration heterogeneous optical networks,” Optical Fiber Technology, vol. 20, no. 2, pp. 6874, Mar. 2014.

51. A. P. T. Lau, Y. Gao, Q. Sui, D. Wang, Q. Zhuge, M. MorsyOsman, M. Chagnon, X. Xu, C. Lu, and D. V. Plant (Invited), “Advanced DSP Techniques Enabling High Spectral Efficiency and Flexible Transmissions: Toward Elastic Optical Networks,” IEEE Signal Processing Magazine, vol. 31, no.2, pp. 82–92, Mar. 2014.

52. L. Huang, D. Wang, A.P.T. Lau, C. Lu, and S.L. He, “Performance analysis of blind timing phase estimators for digital coherent receivers,” Optics Express, vol. 22, no. 6, pp. 67496763, Mar. 2014.

53. M.C. Tan, F. N. Khan, A. H. AlArashi, Y.D. Zhou and A.P.T. Lau, “Simultaneous Optical Performance Monitoring and Modulation Format/BitRate Identification Using Principal Component Analysis,” Journal of Optical Communications and Networking, vol. 6, no. 5, pp. 441448, May 2014.

54. X. Zhou, K. Zhong, Y. Gao, C. Lu, A.P.T. Lau and K. Long, “Modulationformatindependent blind phase search algorithm for coherent optical square MQAM systems,” Optics Express, vol. 22, no. 20, 2404424055, Sept. 2014.

55. X. Zhou, C. Lu, A.P.T. Lau and K. Long, “LowComplexity Carrier Phase Recovery for Square MQAM Based on SBPS Algorithm,” IEEE Photonics Technology Letters, vol. 26, no. 18, pp. 18631866, Sept. 2014.

56. X. Zhang, Z. Li, J. Li, C. Yu, A.P.T. Lau and C. Lu, “Lowcost coherent receiver for longreach optical access network using singleended detection,” Optics Letters, vol. 39, no. 18, pp. 52485250, Sept. 2014.

57. X. Zhou, K. Zhong, Y. Gao, C. Lu, A.P.T. Lau, K. Long, “Modulationformatindependent blind phase search algorithm for coherent optical square MQAM systems,” Optics Express, vol. 22, no. 20, pp. 2404424054, Oct. 2014.

58. Y. Gao, E. Ha, A.P.T. Lau, C. Lu, X. Xu and L. Li, “Nondataaided and universal cycle slip detection and correction for coherent communication systems,” Optics Express, vol. 22, no. 25, pp. 3116731179, Dec. 2014.
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2013:

Q. Sui, A.P.T. Lau and C. Lu, “Fast and Robust Blind Chromatic Dispersion Estimation Using AutoCorrelation of Signal Power Waveform for Digital Coherent Systems” IEEE/OSA Journal of Lightwave Technology, vol. 31, no. 2, pp. 306312, Jan. 2013.

L. Tao, Y. Wang, Y. Gao, A.P.T. Lau, N. Chi and C. Lu, “Experimental demonstration of 10 Gb/s multilevel carrierless amplitude and phase modulation for short range optical communication systems,” Optics Express, vol. 21, no. 5, pp. 64596465, Mar. 2013.

D. Wang, C. Lu, A.P.T. Lau, P.K.A. Wai and S. He, “Adaptive CD Estimation for Coherent Optical Receivers Based on Timing Error Detection,” IEEE Photonics Technology Letters , vol. 25, no. 10, pp. 985989, May 2013.

Y. Gao, A.P.T. Lau and ^C. Lu, “ModulationFormatIndependent Carrier Phase Estimation for Square MQAM Systems,” IEEE Photonics Technology Letters, vol. 25, no. 11, pp. 10731076, June 2013.

L. Tao, Y. Ji, J. Liu, A.P.T. Lau, N. Chi and C. Lu (Invited), “Advanced modulation formats for short reach optical communication systems,” IEEE Network, vol. 27, no. 6, pp. 613, Nov. 2013.

L. Tao, Y. Wang, Y. Gao, A.P.T. Lau, N. Chi and C. Lu, “40 Gb/s CAP32 System With DDLMS Equalizer for Short Reach Optical Transmissions,” IEEE Photonics Technology Letters, vol. 25, no. 23, pp. 23462349, Dec. 2013.
2012:â€‹

F. Y. M. Chan, A. P. T. Lau, and H.Y. Tam, "Mode coupling dynamics and communication strategies for multicore fiber systems," Optics Express, vol. 20, no.4, pp. 45484563, Feb. 2012

N. Bai, E. Ip, Y.K Huang, E. Mateo, F. Yaman, M.J. Li, S. Bickham, S. Ten, J. Liñares, C. Montero, V. Moreno, X. Prieto, V. Tse, K.M. Chung, A.P.T. Lau, H.Y. Tam, C. Lu, Y. Luo, G.D. Peng, G. Li, and T. Wang, "Modedivision multiplexed transmission with inline fewmode fiber amplifier," Optics Express, vol. 20, no.3, pp. 26682680, Jan. 2012.

F. N. Khan, Y. Zhou, A. P. T. Lau and C. Lu, “Modulation format identification in heterogeneous fiberoptic networks using artificial neural networks,” Optics Express, vol. 20, no. 11, pp. 1242212431, May 2012.

C. Wu, Z. Liu, K.M. Chung, M.L.V. Tse, F. Y. M. Chan, A.P.T. Lau, C. Lu and H.Y. Tam, “Strong LP01 and LP11 mutual coupling conversion in a twomode fiber Bragg grating,” IEEE Photonics Journal, vol. 4 , no. 4, pp.1080 – 1086, May 2012.

F. N. Khan, T. S. R. Shen, Y. Zhou, A. P. T. Lau and C. Lu, “Optical Performance Monitoring Using Artificial Neural Networks Trained With Empirical Moments of Asynchronously Sampled Signal Amplitudes,” IEEE Photonics Technology Letters, vol. 24, no. 12, pp. 982984, Jun. 2012.

Z. Dong, A.P.T. Lau and C. Lu, “OSNR Monitoring for QPSK and 16QAM Systems in Presence of Fiber Nonlinearities for Digital Coherent Receivers”, Optics Express, vol. 20, no. 17, pp. 1952019534, Aug. 2012.

T.S.R. Shen,*Q. Sui and A.P.T. Lau, “OSNR Monitoring for PMQPSK systems with Large Inline Chromatic Dispersion Using Artificial Neural Network Technique,” IEEE Photonics Technology Letters, vol. 24, no. 17, pp. 15641567, Sept. 2012.

F. N. Khan, A.P.T. Lau, C. Lu, T. B. Anderson, J. C. Li and P.K.A. Wai, “Simultaneous and independent OSNR and chromatic dispersion monitoring using empirical moments of asynchronously sampled signal amplitudes,” IEEE Photonics Journal, vol. 4, no. 5, pp. 13401350, Oct. 2012.

T. Dong, Y. Bao, Y. Ji, A.P.T. Lau, Z. Li and C. Lu, “Bidirectional hybrid OFDMWDMPON system for 40 Gb/s downlink and 10 Gb/s uplink transmission using RSOA remodulation,” IEEE Photonics Technology Letters, vol. 24, no. 22, pp. 20242026, Nov. 2012.

S. Yan, X. Weng, Y. Gao, C. Lu, A.P.T. Lau, Y. Ji, L. Liu and X. Xu, “Generation of square or hexagonal 16QAM signals using a Dualdrive IQ modulator” Optics Express, vol. 20, no. 27, 2902329034, Dec. 2012.
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2011:

F.N. Khan, A.P.T. Lau, C. Lu and P.K.A. Wai, “Chromatic dispersion monitoring for multiple modulation formats and data rates using sideband optical filtering and asynchronous amplitude sampling technique,” Optics Express, vol. 19, no. 2, pp. 10071015, Jan. 2011.

J. Yang, C. Yu, L. Cheng, Z. Li, C. Lu, A.P.T. Lau, H.Y. Tam and P.K.A. Wai, “CDinsensitive PMD monitoring based on RF power measurement,” Optics Express, vol. 19, no. 2, pp. 13541359, Jan. 2011.

K.P. Ho, A.P.T. Lau and W. Shieh, “Equalization Enhanced Phase Noise Induced Timing Jitter,” Optics Letters, vol. 36, no. 4, pp.585587, Feb. 15, 2011.

A.P.T. Lau, Z. Li, F. N. Khan, C. Lu and P. K. A. Wai, “Analysis of signed chromatic dispersion monitoring by waveform asymmetry for differentiallycoherent phasemodulated systems,” Optics Express, vol. 19, no. 5, pp. 41474156, Feb. 2011.

L. Chen, Z. Li, C. Lu, A.P.T. Lau, H.Y. Tam and P.K.A. Wai, “Chromatic Dispersion Monitoring Based on Variance of Received Optical Power” IEEE Photonics Technology Letters, vol. 23, no. 8, pp. 486488, Apr. 15, 2011.

D. Wang, C. Lu, A.P.T. Lau and S. He, “Adaptive Chromatic Dispersion Compensation for Coherent Communication Systems Using DelayTap Sampling Technique,” IEEE Photonics Technology Letters, vol. 23, no. 14, pp. 10161018, Jul. 15, 2011.

Q. Li, F. Li, K. K. Y. Wong, A.P.T. Lau, K. K. Tsia, and P. K. A. Wai, “Investigating the influence of a weak continuouswavetrigger on picosecond supercontinuum generation,” Optics Express, vol. 19, no. 15, pp. 1375713769, Jul. 5, 2011.

Y. Gao, A.P.T. Lau, S. Yan, and C. Lu, "Lowcomplexity and phase noise tolerant carrier phase estimation for dual polarization 16QAM systems," Optics Express, vol.19, no. 22, pp. 2171721729, Oct. 2011.

J. Yang, **C. Yu, Y. Yang, L. Cheng, Z. Li, C. Lu, A.P.T. Lau, H.Y. Tam, P.K.A. Wai, “PMDInsensitive CD Monitoring Based on RF Clock Power Ratio Measurement With Optical Notch Filter,” IEEE Photonics Technology Letters, vol. 23, no. 21, pp. 15761578, Nov. 2011.

Y. Yang, C. Lu, A.P.T. Lau, Y. Yao, Y. Sun, J. J. Xiao, H.Y. Tam and P. K. A. Wai, “A robust and ditherfree technique for controlling driver signal amplitude for stable and arbitrary optical phase modulation,” Optics Express, vol. 19, no. 27, pp.2635326358, Dec. 2011
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2010:

F. N. Khan, A.P.T. Lau, Z. Li, C. Lu and P.K.A. Wai, “Statistical Analysis of Optical SignaltoNoise Ratio Monitoring Using DelayTap Sampling,” IEEE Photonics Technology Letters, vol. 22, no. 3, pp. 149151, Feb. 1, 2010.

Z. Li, J. Zhao, L.H. Cheng, Y.F. Yang, C. Lu, A.P.T. Lau, C. Yu, H.Y. Tam and P.K.A. Wai, “Signed Chromatic Dispersion Monitoring of 100Gbit/s CSRZ DQPSK signal by evaluating the asymmetry ratio of delay tap sampling,” Optics Express, vol. 18, no. 3, pp. 31493157, Feb. 2010.

F.N. Khan, A.P.T. Lau, Z. Li, C. Lu and P.K.A. Wai, “OSNR monitoring for RZDQPSK Systems Using HalfSymbol DelayTap Sampling Technique,” IEEE Photonics Technology Letters, vol. 22, no. 11, pp. 823825, Jun. 2010.

Z. Li, C. Yu, Y. Dong, L.H. Cheng, L.F.K. Lui, C. Lu, A.P.T. Lau, H.Y. Tam and P.K.A. Wai, “Linear photonic radio frequency phase shifter using a differentialgroupdelay element and an optical phase modulator,” Optics Letters, vol. 35, no. 11, pp. 18811883, Jun. 2010.

J. Zhao, A.P.T. Lau, C. Lu, H.Y. Tam and P.K.A. Wai, “Signed and Accurate Measurement of Phase Offset in Optical DPSK Demodulator,” IEEE Photonics Technology Letters, vol. 22, no. 14, pp. 10181020, Jul. 2010.

A.P.T. Lau, T.S.R. Shen, W. Shieh and K.P. Ho, “Equalizationenhanced phase noise for 100Gb/s transmission and beyond with coherent detection,” Optics Express, vol. 18, no. 16, pp. 1723917251, Aug. 2010.

Q. Sui, A.P.T. Lau and C. Lu, “OSNR Monitoring in Presence of FirstOrder PMD using DSP,” IEEE/OSA Journal of Lightwave Technology, vol. 28, no. 15, pp. 21052114, Aug. 2010.

T.S.R. Shen, A.P.T. Lau and G.N. Liu, “OSNR Monitoring for Higher Order Modulation Formats Using Asynchronous Amplitude Histogram,” IEEE Photonics Technology Letters, vol. 22, no. 22, pp. 16321634, Nov. 2010.

T.S.R. Shen, K. Meng, A.P.T. Lau and Z.Y. Dong, “Optical Performance Monitoring Using Artificial Neural Network Trained With Asynchronous Amplitude Histograms,” IEEE Photonics Technology Letters, vol. 22, no. 22, pp. 16651667, Nov. 2010.

T.S.R. Shen, A.P.T. Lau and C. Yu, “Simultaneous and independent multiparameter monitoring with fault localization for DSPbased coherent communication systems,” Optics Express, vol. 18, no. 23, pp. 2360823619, Nov. 2010.

J. Zhao, A,P.T. Lau, K.K.Qureshi, C. Lu, X. R. Ma, H. Y. Tam, and P. K. A. Wai, “Signed frequency offset measurement for direct detection DPSK system with a chromatic dispersion offset,” Optics Express, vol. 18, no. 23, pp. 2382923836, Nov. 2010.
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2009:

Z. Li, L. Cheng, Y. Yang, C. Lu, A.P.T. Lau, H. Tam, P.K.A. Wai, C. Wang, X. Xu, J. Deng and Q. Xiong, “1500km SSMF Transmission of Mixed 40Gbit/s CSRZ Duobinary and 100Gbit/s CSRZ DQPSK Signals,” IEEE Photonics Technology Letters, vol. 21, no. 16, pp.11481150, Aug. 2009.

R.A. Panicker, A.P.T. Lau, J.P. Wilde and J.M. Kahn, “10 Gb/s transmission over 2 km Multimode Fiber with Connector Offsets Using Adaptive Optics” OSA/IEEE Journal of Lightwave Technology, vol. 27, no. 24, pp. 57835789, Dec. 2009.

J. Zhao, A.P.T. Lau, K.K. Qureshi, Z. Li, C. Lu and H.Y. Tam, “Chromatic Dispersion Monitoring for DPSK Systems Using RF Power Spectrum,” OSA/IEEE Journal of Lightwave Technology, vol. 27, no. 24, pp. 57045709, Dec. 2009.
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2008 and before

A.P.T. Lau and T.J. Lim, “A Low Complexity Enhancement to SubOptimal CDMA Receivers”, IEEE Transactions on Wireless Communication, vol. 3, no. 6, November 2004, pp. 19241927.

A.P.T. Lau and J.M. Kahn, “Design of Inline Amplifiers Gain and Spacing to Minimize Phase Noise in Optical Transmission Systems,” OSA/IEEE Journal of Lightwave Technology, Mar 2006, pp.13341341.

A.P.T. Lau and J.M. Kahn, “Power Profile Optimization in Phase Modulated Systems in Presence of Nonlinear Phase Noise", IEEE Photonics Technology Letters, vol. 18, no. 23, pp. 25142516, Dec. 2006.

A.P.T. Lau and F. Kschischang, “Optimal Feedback Quantization in Wireless Multiuser Diversity systems,” IEEE Transactions on Information Theory, vol. 53, no. 4, pp. 13861400, Apr. 2007.

A.P.T. Lau, L. Xu and T. Wang, “Performance of Receivers and Detection Algorithms for Modal Multiplexing in Multimode Fiber Systems,” IEEE Photonics Technology Letters, vol. 19, no. 14, pp.10871089, July 2007.

A.P.T. Lau and S. Cui, "Joint Power Minimization in Wireless Relay Channels," IEEE Transactions on Wireless Communications, vol. 6, no. 4, pp. 28202824, Aug. 2007.

A.P.T. Lau and J.M. Kahn, “Signal Design and Detection in Presence of Nonlinear Phase Noise,” OSA/IEEE Journal of Lightwave Technology, vol. 25, no. 10, pp. 30083016, Oct. 2007.

E. Ip, A.P.T. Lau, D.J.F. Barros and J.M. Kahn (Invited), “Coherent Detection in Optical Fiber Systems,” OSA Optics Express, pp. 753791, Jan. 2008.

A.P.T. Lau, S. Rabbani and J.M. Kahn, “On the Statistics of Intrachannel FourWave Mixing in PhaseModulated Optical Communication Systems,” OSA/IEEE Journal of Lightwave Technology. vol. 26, no. 14, pp. 21282135, Jul. 2008.