Download Resume as a PDF file Download Full CV as a PDF file

CHANGYUAN YU

National University of Singapore, 4 Engineering Drive 3, Singapore 117583
Tel: 65-6516-3590 Fax: 65-6779-1103
E-mail: eleyc@nus.edu.sg Web: https://www.ece.nus.edu.sg/stfpage/eleyc

---

KEY QUALIFICATIONS:

· Research on photonics, including: integrated micro/nano optical devices, optical interconnects, fiber-optical devices and subsystems, optical sensors, and high-speed WDM optical communication systems and networks

EDUCATION:

· Ph.D. in Electrical Engineering, Univ. of Southern California, USA, 2005

Dissertation: “Dispersive and Nonlinear Effects in High-Speed Reconfigurable WDM Optical Fiber Communication Systems”  (Advisor: Dr. Alan E. Willner)

· Master of Science in Electrical & Computer Engineering, Univ. of Miami, USA, 1999

Thesis: “Flat-Top and Non-Diffracting Beam Shaping Using Phase-Only Diffractive Optical Elements”

· Bachelor of Science in Applied Physics and Bachelor of Economics in Enterprise Management, Tsinghua Univ., China, 1997

Thesis: “Excitons in Quantum Dot of II-VI Semiconductor”

PROFESSIONAL EXPERIENCE:

· Dept. of Electrical and Computer Engineering, National University of Singapore (Founding Leader of Photonic System Research Group, 12/2005-present)

· A*STAR Institute for Infocomm Research (25% Joint Senior Scientist, 12/2005-present)

· National University of Singapore Graduate School for Integrative Sciences and Engineering (Ph.D. Supervisor, 07/2011-present)

· NEC Labs America (Visiting Researcher, 9/2005-12/2005)

· Optical Communications Lab, Dept. of Electrical Engineering, University of Southern California (Research and Teaching Assistant, 8/2000-8/2005)

· Electro-Optics & Micro-Devices Lab, Dept. of Electrical & Computer Engineering, University of Miami (Research and Teaching Assistant, 8/1997-5/2000)

RECENT RESEARCH PROJECTS (2006-present, with fund over 5 million SGD; 1 SGD= 0.8 USD)

· The cross-layer optical performance monitoring based on radio frequency spectrum analysis and two-dimension phase portrait recognition as well as control plane coordination (PI, National Natural Science Foundation of China 61471253, 01/2015~12/2018)

· Carrier recovery based on DSP in Tbit/s coherent optical OFDM systems (PI, MOE AcRF Tier 2 MOE2013-T2-2-145, 05/2014~04/2017)

· Hybrid digital- and radio-over-fiber network for urban infrastructure (PI, MOE AcRF R -263-000-A43-112, 03/2013~02/2016)

· Application of photonic integrated circuits in optical communication networks (PI, NUSRI R-2012-N-009, 01/2012~12/2014)

· OPM for smart optical networks based on RF analysis with optical filtering (PI, MOE AcRF R-263-000-631-112, 03/2011~02/2014)

· General research on fiber optics and optical communications (PI, Gift Donation from NEC Labs America R-263-000-565-720, 11/2009~03/2014)

· The applications of digital signal processing in 100-Gbit/s coherent optical communication systems (PI, A*STAR SERC PSF 092 101 0054, 09/2009~08/2012)

· Autocorrelator for optical pulses based on measurement of polarization effects (PI, MOE AcRF R-263-000-424-112, 03/2007~02/2010)

· Multi-channel wavelength-tunable short pulses generation in ultra high-speed optical systems (PI, MOE AcRF R-263-000-354-112/133, 03/2006~03/2009)

· Traffic Engineering and System Design for Hybrid Optical Data Center (co-PI, MOE AcRF Tier 2 MOE2013-T2-2-135, 05/2014~04/2017)

· Synthetic aperture radar on a nano-satellite swarm platform (Co-PI, MOE AcRF R-263-000-A51-112, 03/2013~02/2016)

· Investigations of decision-aided linear carrier phase estimation in ultra-high capacity wavelength division multiplexing optical coherent transmission systems (Co-PI, National Natural Science Foundation of China 61271239, 01/2013~12/2016)

· Microwave photonics in biomedical applications (Co-PI, International Program Development Fund of University of Sydney, 11/2012~10/2013)

· Visible light communications (Co-PI, A*STAR SERC HOME2015 092 115 0111, 03/2010~08/2012)

· Small-footprint semiconductor optical transmitter for RZ transmission systems (Co-PI, MOE AcRF R-263-000-500-112, 05/2008~04/2011)

· Fabrication and testing of fiber optic hydrophones and arrays (Collaborator, A*STAR EC-2007-20, 8/2007~1/2011)

· Distributed temperature and strain sensor (Collaborator, A*STAR CR-2006-22, 4/2006~3/2007)

PREVIOUS RESEARCH PROJECTS (1997-2005):

· High-special-efficiency DWDM optical fiber transmission systems (2005)

· Tunable delay line based on slow light in fiber (2004~2005)

· High speed all-optical logic gates, all-optical wavelength conversion and optical parametric amplification by fiber nonlinear effects (2002~2005)

· High speed short pulse train generation using phase modulator and PM fiber (2004~2005)

· Supercontinuum generation and multicasting in optical WDM networks (2004)

· Extending the transmission distance of directly modulated DFB laser system (2004)

· Monitoring and compensation of chromatic dispersion and polarization-mode dispersion (PMD) in WDM optical fiber transmission systems (2000~2003)

· Development of Labview-based beam profiler (1999~2000)

· Fabrication of holographic devices on ion-exchanged photo-chromic glass for optical interconnects and optical storage (1999~2000)

· High density nondiffracting beam array for optical interconnection (1997~1999)

· Fabrication of waveguide on HEBS glass by laser-writing assisted etching technique for chip-to-chip optical interconnects (1997~1999)

· Flat-top beam shaper fabricated by a non-lithographic technique (1997~1998)

TEACHING EXPERIENCE:

· Lecture:

Ø EE6136 “Advanced Optical Communications” (2012~present)

Ø EE4114 “Optical Communications” (2010~present)

Ø EE3407 “Analog Electronics” (2007~present)

Ø ESP1104 “Introduction to Electronic Systems” (2007~2009)

· Tutorial:

Ø EE2009  “Signals” (2006~2009)

· Lab supervision:

Ø EE2009  “Signals” (2006~2007)

Ø EE3208 “Embedded Computer Systems Design” (2006)

· Research students supervised:

Ø Currently supervising 8 Ph.D. students (ZHOU Jingjing, ZHENG Huanhuan, HU Qikai, DONG Bo, TAN Kang, DU Xinwei, HAO Chenglong, LI Yan), and some Master, FYP and visiting students

Ø Graduated Ph.D. students (7):

1. XU Zhuoran, “Maximum Likelihood Based Carrier Recovery for High Speed Coherent Optical Communication Systems,” 08/2014

2. YU Yi, “Optical performance monitoring in high-speed optical communication systems,” 08/2014

3. CAO Shengjiao, “Digital signal processing for front-end non-idealities in coherent optical OFDM system,” 01/2014

4. ZHANG Hongyu, “Study on advanced modulation formats in coherent optical communication systems,” 08/2012

5. HU Junhao, “Advances measurement techniques in optical fiber sensor and communication systems,” 08/2011

6. ZHANG Shaoliang, “Coherent phase-modulated optical fiber communications with linear and nonlinear phase noise,” 01/2011

7. YANG Jing, “Fiber physical efforts in high-speed optical communication networks and fiber sensor systems,” 08/2010

Ø Graduated Master students (6):

1. GUAN Hang, “Novel polarization-diversity devices on a silicon-on-insulator platform,” 08/2014

2. Prasanna Caliaperoumal, “Optical performance monitoring in high-speed reconfigurable optical networks,” 05/2012

3. Raju Gottumukkala, “Dispersion monitoring based on RF spectrum analysis with optical filtering in high-speed optical communication systems,” 12/2010

4. YU Yi, “Filtering effects in high-speed differential phase-shift keying optical communication systems,” 12/2009

5. HAN Xue, “Comparison of modulation formats in 42.8-Gbit/s WDM fiber-optic communication systems,” 05/2009

6. LI Xiaojing, “Pilot-aided maximum likehood phase estimation in optical M-ary phase-shift keying system,” 12/2008

Ø Graduated FYP students (24)

1. CHANG Zhi Ping, “ARM SOC based firmware development in GPON test system for fiber to the home,” 05/2014

2. TAN Guan Wen, “Reach extension in directly modulated laser systems by filtering,” 05/2014

3. HE Chunyang, “Carrier recovery based on digital signal processing for 100-Gbit/s coherent optical communication systems,” 05/2014

4. SONG Min, “Simultaneous optical signal-to-noise ratio and chromatic dispersion monitoring in optical fiber communication systems,” 05/2014

5. LOH Chung Fatt, “Optical performance monitoring in high-speed optical fiber networks,” 05/2013

6. WANG Xiaoqing, “Chromatic dispersion monitoring in high-speed optical fiber networks,” 05/2013

7. LI Zhaoshuai, “Reach extension in directly modulated laser systems,” 05/2012

8. LIU Jia, “High speed driver of white-LED for visible light communications,” 05/2012

9. LIANG Lemin, “Optical performance monitoring in high-speed optical fiber networks,” 05/2012

10. Muhamad Khairul Bin Mohd Isa, “High speed optical receiver for visible light communications,” 05/2012

11. SOE San, “Optical performance monitoring in high-speed optical fiber networks,” 05/2012

12. YAP Yongbin, “High speed optical receiver for visible light communications,” 05/2012

13. ZOU Meixia, “Reach extension in directly modulated laser systems,” 05/2012

14. REN Shirui, “Receiver design of white LED wireless communication system,” 05/2011

15. TAN Hou Hock, “White LED lighting and visible light communication transmitter,” 05/2011

16. LIM Yu Ting, “A visible light communication system enabled by power line modem,” 05/2011

17. LI Yuanfeng, “Visible light communication transmitter based on white LED,” 05/2011

18. LU Huan Xun, “A visible light communication system using LED with power line modem,” 05/2011

19. XU Fang, “Optical performance monitoring in high-speed fiber communication systems,” 05/2011

20. YANG Kai, “Investigation of transmission distance improvement over standard single-mode fiber for 10-Gb/s chirped directly-modulated system,” 05/2011

21. He Minghui, “Chromatic Dispersion Monitoring In High-Speed Optical Communication Systems,” 05/2010

22. CHEE Kang Wei, “PMD monitoring for high-speed optical communication systems based on power measurement of RF tone,” 05/2009

23. V. M. Ramkumar, “Investigation of polymer optical fiber for high data rate and short range communication,” 05/2008

24. XING Rui, “Quantum-dots based biosensor project – development of a graphic interface as part of the software package for the urine analysis device,” 05/2008

· Post-doc research fellows supervised:

Ø Dr. XU Zhuoran: 12/2014-present

Ø Dr. ZHENG Wei: 08/2014-present

Ø Dr. LING Yutao: 05/2013-05/2014

Ø Dr. HU Junhao: 08/2011~08/2012

Ø Dr. YANG Jing: 11/2010~08/2012

Ø Dr. CHEN Wei: 08/2010~08/2012

Ø Dr. ZHANG Banghong: 08/2010~08/2012

Ø Dr. SHAO Xuguang: 03/2010~08/2011

ACTIVITIES:

· Member, IEEE Photonics Society (IEEE/PS)

· Member, Optical Society of America (OSA)

· Student activity chair, IEEE Singapore Section (2011~2012)

· Chair, IEEE/PS Singapore Chapter (2010, won Best Chapter Award from IEEE Singapore Session, and Largest Membership Increase Chapter Award from IEEE/PS)

· Supervisor, the Student Branch of IEEE/PS Singapore Chapter (2009~present)

· Committee member, IEEE/PS Singapore Chapter (2007~present)

· Founding secretary and committee member, OSA Singapore Chapter (2010~present)

· Committee member, ECE Alumni Relations Committee, NUS (2012~present)

· Judge, ECE Graduate Student Symposium, National University of Singapore, Singapore, 2012-2014

· Organizer and invited speaker on “High Speed Optical Fiber Communications”, Discover Optics 2011, an educational event for junior college students, sponsored by OSA Singapore Chapter and IEEE/PS Singapore Chapter, 2011

· Judge, Junior Talent Development Program, Singapore, 2010

· Advisor and honorary conference chair, 1st IEEE/PS Singapore chapter Best Student Paper Award Competition (BSPA), 2009

· Chair/Co-chair, Working Group 1 (WG1) of Telecommunications Standards Advisory Committee (TSAC) for Infocomm Development Authority (IDA) of Singapore: to define the standards of the physical layer for the next generation broadband network in Singapore (2009~present)

· Serve in organizing committee or technical program committee (TPC) for 50+ international conferences, including:

1. TPC member and session chair, Conference on Optical Fiber Communication (OFC, the flagship conference on optical communications) 2014-2016

2. General chair, Signal Processing in Photonics Communications Conference, OSA Advanced Photonics Congress (SPPCom) 2015, Boston, MA, USA, June 27-July 1, 2015

3. Chair of Optical Communications Symposium, IEEE Photonics Global Conference (PGC) 2015, Singapore, June 28 –July 3, 2015

4. Chair of Optical Communications Special Session, 14th IEEE International Conference on Communication Systems (ICCS) 2014, Macau, November 19-21, 2014

5. Chair of Optical Transmission Subsystems and Techniques Subcommittee, 13th International Conference on Optical Communications and Networks (ICOCN) 2014, Suzhou, China, November 9-10, 2014

6. Chair of Optical Communication Systems and Networks Symposium, 3rd IEEE/CIC International Conference on Communications in China (ICCC) 2014, Shanghai, China, October 13-15, 2014

7. Conference Chair, Optoelectronic Devices and Integration V, Photonics Asia, Beijing, China, October 9-11, 2014

8. TPC chair, Signal Processing in Photonics Communications Conference, OSA Advanced Photonics Congress (SPPCom) 2014, San Diego, CA, USA, July 13-17, 2014

9. Co-Chair of Biomedical Instrumentation Track, International Conference in Biomedical Engineering  (ICBME) 2013, Singapore, December 4-7, 2013

10. Chair of Advanced Optical Communications Symposium and financial chair, IEEE Photonics Global Conference (PGC) 2012, Singapore, December 13-16, 2012

11. Conference Chair, Semiconductor Lasers and Applications V, Photonics Asia 2012, Beijing, China, November 5-9, 2012

12. TPC co-chair, International Conference on Information Photonics & Optical Communications (IPOC) 2011, Singapore, October 21-23, 2011

13. TPC member and publicity chair, IEEE Topical Meeting on Microwave Photonics (MWP) 2011, Singapore, October 18-21, 2011

14. Co-chair of Optical Communication and Networks Symposium and local arrangement chair, IEEE Photonics Global Conference (PGC) 2010, Singapore, December 14-16, 2010

15. Honorary conference chair, 1st Photonics Global Student Conference (PGSC) 2010, Singapore, December 14-16, 2010

16. TPC co-chair, 12th IEEE International Conference on Communication Systems (ICCS) 2010, Singapore, November 17-19, 2010

17. Conference co-chair on optical transmission, 9th International Conference on Optical Communications and Networks (ICOCN) 2010, Nanjing, China, October 24-27, 2010

18. Co-chair of Symposium P (Fiber Optical Devices and Applications), 5th International Conference on Materials for Advanced Technologies  (ICMAT) 2009, Singapore, June 28-July 3, 2009

19. TPC member and organizing committee member, IEEE Photonics Global Conference (PGC) 2008, Singapore, December 8-11, 2008

20. TPC member and session chair, Opto-Electronics and Communications Conference (OECC) 2008, Sydney, Australia, July 7-10, 2008

· Editorial Board member (01/10/2013-30/09/2015), Photonic Network Communications Journal (ISSN: 1387-974X print version, 1572-8188 electronic version), published by Springer

· Editorial Board member (01/09/2013-31/08/2016), Frontiers of Optoelectronics (ISSN: 2095-2759 print version, 2095-2767 electronic version), published by Springer

· Reviewer for IEEE Photonics Technology Letters, IEEE/OSA Journal of Lightwave Technology, IEEE Transaction on Communications, IEEE Journal of Selected Topics in Quantum Electronics, IEEE Photonics Journal, Optics Letters, Optics Express, Optics Communications, Optical Fiber Technology, Optics Engineering, IEE Electronics Letters, and a few other journals and international conferences

HONORS:

· Championship in biomedical area, the 3^rd China Innovation and Entrepreneurship Competition (out of 10,000+ competitors) 2014, reported by 10+ media

· Zhuoran Xu (Ph.D. student), Best Student Paper Award (for the paper “Adaptive Maximum Likelihood Sequence Detection in 100-Gbit/s Coherent Optical Communication System” authored by Z. Xu, B. Zhang, C. Yu, and P.Y. Kam), 3^rd NUS ECE Graduate Student Symposium 2013, Singapore, June 18, 2013

· Shengjiao Cao (Ph.D. student), Best Student Paper Award (for the paper “Mitigation of nonlinearity based on optimized percentage of dispersion pre-compensation in coherent optical PDM-OFDM systems” authored by S. Cao, C. Yu, and P.Y. Kam), IEEE Photonics Global Conference (PGC) 2012, Singapore, December 13-16, 2012

· Shaoliang Zhang (Ph.D. student), IEEE Photonics Society Graduate Student Fellowship Award 2010 (10 winners from all over the world), which is a top honor for the graduate students in IEEE Photonics Society, reported in the IEEE Photonics Society website and also the IEEE Photonics Society newsletters

· Jing Yang (Ph.D. student), Best Student Paper Award (for the paper “CD insensitive PMD monitoring for different modulation formats based on RF tone power measurement using an FBG notch filter” authored by J. Yang, K.W.L. Chee, and C. Yu), 7th International Conference on Information, Communications and Signal Processing (ICICS) 2009, Macau, December 8-10, 2009

· Junhao Hu (Ph.D. student), Best Student Presentation Award Honorable Mention (for the paper “Long distance fiber Bragg grating sensor system based on Erbium-doped fiber and Raman amplification” authored by J. Hu, Z. Chen, X. Yang, J. Ng, and C. Yu), Asia Communications and Photonics Conference and Exhibition (ACP) 2009, Shanghai, November 2-6, 2009

· Jing Yang (Ph.D. student), Certificate of Merits (for the paper “Multi-channel 80-GHz pulse train generation based on four-wave mixing in highly nonlinear fiber” authored by J. Yang, J. Hu, C. Yu, Y.K. Yeo, and Y. Wang), OptoElectronics and Communications Conference (OECC) 2009, Hong Kong, July 13-17, 2009

· Best Paper Award (for the paper “Polarization Insensitivity Optic Distributed Strain Sensing System Based on Stimulated Brillouin Scattering” authored by J. Yang, C. Yu, Z. Chen, J. Ng, and X. Yang), Symposium P (Fiber Optical Devices and Applications), the 5th International Conference on Materials for Advanced Technologies  (ICMAT) 2009, Singapore, June 28-July 3, 2009

· Academic Achievement Award, Univ. of Southern California, 2005

· IEEE/LEOS (now IEEE Photonics Society) Graduate Student Fellowship Award, 2004 (12 winners from all over the world), reported in the IEEE LEOS website and also the IEEE LEOS newsletters

· Teaching and Research Assistant Scholarship, Univ. of Southern California, 2000- 2005

· Award of Academic Merit, Graduate School of Univ. of Miami, 1999

· Teaching and Research Assistant Scholarship, Univ. of Miami, 1997- 2000

· Outstanding Student Scholarship, Tsinghua Univ., 1992-1996

PUBLICATIONS (with over 1400 citations, H-index=20 till 12/12/2014, Good Scholar: http://scholar.google.com.sg/citations?user=w0UGtSoAAAAJ)

(US PATENT)

1. U.S. Pat. # 6,646,774 (Co-inventors: Z. Pan, Y. Wang, T. Luo, A.B. Sahin, Q. Yu, and A.E. Willner), “Intra-bit polarization diversity modulation,” Issued on November 11, 2003

(BOOK CHAPTERS)

2. C. Yu, Z. Li, and S. Zhang, “Frontiers of high-speed optical fiber communications,” Frontiers of Fiber Optics, N.H. Zhu, L.-S. Yan, and J. Liu, editors, Science Press, 2011, ISBN: 978-7-03-032470-2 (in Chinese)

3. N. Liu and C. Yu, “Optical performance monitoring in optical fiber communications,” Frontiers of Fiber Optics, N.H. Zhu, L.-S. Yan, and J. Liu, editors, Science Press, 2011, ISBN: 978-7-03-032470-2 (in Chinese)

4. C. Yu, “Polarization mode dispersion monitoring,” Optical Performance Monitoring: Advanced Techniques for Next-Generation Photonic Networks, Calvin C. K. Chan, editor, Academic Press, Elsevier Inc., 2010, ISBN: 978-0-12-374950-5

5. A.E. Willner, C. Yu, Z. Pan, and Y. Xie, “WDM fiber optic communication networks,” Handbook of Optics, 3^rd Edition, Vol. V, M. Bass, C.M. DeCusatis, J.M. Enoch, V. Lakshminarayanan, G. Li, C. MacDonald, V.N. Mahajan, E. Van Stryland, editors, McGraw-Hill, Inc., 2009, ISBN: 978-0-07-163313-0

6. A.E. Willner, Z. Pan, and C. Yu, “Optical performance monitoring,” Optical Fiber Telecommunications VB, Ivan P. Kaminow, Tingye Li, and Alan E. Willner, editors, Academic Press, Elsevier Inc., 2008, ISBN: 978-0-12-374172-1

7. C. Yu, “Comparison of advanced modulation formats for 40-Gbit/s DWDM optical fiber transmission systems with 50-GHz channel spacing,” Advanced Technologies for High-Speed Optical Communications, Lei Xu, editor, Research Signpost, 2007, ISBN: 81-308-0171-X

(JOURNALS)

8. X. Li, W.D. Zhong, A. Alphones, C. Yu, and Z. Xu, “Channel Equalization in Optical OFDM Systems Using Independent Component Analysis,” IEEE/OSA Journal of Lightwave Technology, vol. 32, no. 18, pp. 3206-3214, September 2014

9. S. Cao, P.Y. Kam, C. Yu, and X. Cheng, “Pilot-tone assisted log-likelihood ratio for LDPC coded CO-OFDM system,” IEEE Photonics Technology Letters, vol. 26, no. 15, pp. 1577-1580, August 2014

10. S. Hu, L.  Li, X.  Yi, and C. Yu, “Ultraflat widely tuned single bandpass filter based on stimulated Brillouin scattering,”  IEEE Photonics Technology Letters, vol. 26, no. 14, pp. 1466-1469, July 2014

11. Y. Yu and C. Yu, “Dispersion insensitive optical signal to noise ratio monitoring of PDM signal by using uncorrelated signal power,” Optics Express, vol. 22, no. 11, pp. 12823-12828, June 2014

12. Y. Yu, B. Zhang, and C. Yu, “Optical signal to noise ratio monitoring using single channel sampling technique,” Optics Express, vol. 22, no. 6, pp. 6874-6880, March 2014

13. J. Liu, Z. Li, and C. Yu, “Complementary frequency shifter based on polarization modulator used for generation of a high-quality frequency-locked multicarrier,” Optics Letters, vol. 39, no. 6, pp. 1513-1516, March 2014

14. B. Dong, N. Chen, G. Cheng, C. Yu, and Y. Gong, “Optical pump induced thermal sensitivity reduction in a minimized Er/Yb-codoped-fiber Mach–Zehnder interferometer,” IEEE/OSA Journal of Lightwave Technology, vol. 32, no. 5, pp. 917-921, March 2014

15. Z. Xu, P.Y. Kam, and C. Yu, “Adaptive Maximum Likelihood Sequence Detection for QPSK Coherent Optical Communication System,” IEEE Photonics Technology Letters, vol. 26, no. 6, pp. 583-586, March 2014

16. X. Li, W.D. Zhong, A. Alphones and C. Yu, “Channel Equalization Using Independent Component Analysis in PDM-CO-OFDM,” IEEE Photonics Technology Letters, vol. 26, no. 5, pp. 497-500, March 2014

17. X. Li, W.D. Zhong, A. Alphones and C. Yu, “Time-Domain Adaptive Decision-Directed Channel Equalizer for RGI-DP-CO-OFDM,” IEEE Photonics Technology Letters, vol. 26, no. 3, pp.285-288, February 2014

18. W. Xu, W.B. Huang, X.G. Huang, and C. Yu, “A simple fiber-optic humidity sensor based on extrinsic Fabry–Perot cavity constructed by cellulose acetate butyrate film,” Optical Fiber Technology, vol. 19, no. 6, pp. 583–586, December 2013

19. S. Cao, P.Y. Kam, and C. Yu, “Time-domain blind ICI mitigation for non-constant modulus format in CO-OFDM,” IEEE Photonics Technology Letters, vol. 25, no. 24, pp. 2490-2493, December 2013

20. X. Li, W.D. Zhong, A. Alphones and C. Yu, “Fiber nonlinearity tolerance of APSK modulated DFT-S OFDM systems,” IEEE Photonics Technology Letters, vol. 25, no. 23, pp. 2304-2307, December 2013

21. J. Liu, N. Guo, Z. Li, C. Yu, and C. Lu, “Ultrahigh-Q microwave photonic filter with tunable Q value utilizing cascaded optical-electrical feedback loops,” Optics Letters, vol. 38, no. 21, pp. 4304-4307, November 2013

22. X. Li, W.D. Zhong, A. Alphones and C. Yu, “Pilot-aided channel equalization in RGI-PDM-CO-OFDM systems,” IEEE Photonics Technology Letters, vol. 25, no. 19, pp. 1924-1927, October 2013

23. S. Cao, C. Yu, and P.Y. Kam, “A performance investigation of correlation-based and pilot-tone-assisted frequency offset compensation method for CO-OFDM,” Optics Express, vol. 21, no. 19, pp. 22847-22853, September 2013

24. X. Li, A. Alphones, W.D. Zhong and C. Yu, “Investigation of PMD in direct-detection optical OFDM with zero padding,” Optics Express, vol. 21, no. 18, pp. 20851-20856, September 2013

25. D. Huang, T.H. Cheng, and C. Yu, “Study on phase interpolation filters for coherent optical communications,” IEEE Photonics Technology Letters, vol. 25, no. 17, pp. 1731-1733, September 2013

26. Y. Hong, J. Chen, Z. Wong, and C. Yu, “Performance of precoding MIMO system for decentralized multi-user indoor visible light communications,” IEEE Photonics Journal, vol. 5, no. 4, pp. 7800211.1-12, August 2013

27. C. Jin, Y. Bao, Z. Li, T. Gui, H. Shang, X. Feng, J. Li, X. Yi, C. Yu, G. Li, and C. Lu, “High-resolution optical spectrum characterization using optical channel estimation and spectrum stitching technique,” Optics Letters, vol. 38, no. 13, pp. 2314-2316, July 2013

28. S. Cao, P.Y. Kam, and C. Yu, “Pilot-aided log-likelihood ratio for LDPC coded MPSK-OFDM transmission,” IEEE Photonics Technology Letters，vol. 25, no. 6, pp. 594-597, March 2013

29. B. Zhang, H. Zhang, C. Yu, X. Cheng, Y.K. Yeo, P.Y. Kam, J. Yang, H. Zhang, Y.-H. Wen, and K.-M. Feng, “An all-optical modulation format conversion for 8QAM based on FWM in HNLF,” IEEE Photonics Technology Letters, vol. 25, no. 4, pp. 327-330, February 2013

30. D. Huang, T.H. Cheng, and C. Yu, “Accurate two-stage frequency offset estimation for coherent optical systems,” IEEE Photonics Technology Letters, vol. 25, no. 2, pp. 179-182, January 2013

31. H. Zhang, B. Zhang, C. Yu, and P.Y. Kam, “Experiment on coherent optical RZ 8-star QAM systems using decision-aided maximum likelihood phase estimation,” IEEE Photonics Technology Letters, vol. 24, no. 23, pp. 2139-2141, December 2012

32. S. Cao, P.Y. Kam, and C. Yu, “Decision-aided, pilot-aided, decision-feedback phase estimation for coherent optical OFDM systems,” IEEE Photonics Technology Letters, vol. 24, no. 22, pp. 2067-2069, November 2012

33. Z. Wang, W. Zhong, and C. Yu, “Performance improvement of OOK free-space optical communication systems by coherent detection and dynamic decision threshold in atmospheric turbulence conditions,” IEEE Photonics Technology Letters, vol. 24, no. 22, pp. 2035-2037, November 2012

34. Z. Wang, W. Zhong, C. Yu, J. Chen, C.P. Shin, and W. Chen, “Performance of dimming control scheme in visible light communication system,” Optics Express, vol. 20, no. 17, pp. 18861-18868, August 2012

35. B. Dong, J. Hu, C. Yu, and J. Hao, “Multi-wavelength Q-switched erbium doped fiber laser with a short carbon nanotube based saturable absorber,” Optics Communications, vol. 285, no. 18, pp. 3864-3867, August 2012

36. B. Dong, J. Hu, Z. Chen, and C. Yu, “Long-distance fiber sensor system based on the second-order Raman pump and amplification,” Applied Physics B, vol. 108, no. 1, pp. 57-60, July 2012

37. S. Cao, C. Yu, and P.Y. Kam, “Decision-aided joint compensation of transmitter IQ mismatch and phase noise for coherent optical OFDM,” IEEE Photonics Technology Letters, vol. 24, no. 12, pp. 1066-1068, June 2012

38. H. Zhang, P.Y. Kam, and C. Yu, “Performance analysis of coherent optical 8-star QAM systems using decision-aided maximum likelihood phase estimation,” Optics Express, vol. 20, no. 8, pp. 9302-9311, April 2012

39. Z. Wang, W. Zhong, C. Yu, and S. Fu, “Performance improvement of on-off-keying free-space optical transmission systems by a co-propagating reference continuous wave light,” Optics Express, vol. 20, no. 8, pp. 9284-9205, April 2012

40. J. Hu, Z. Chen, and C. Yu, “150-km Long distance FBG temperature and vibration sensor system based on stimulated Raman amplification,” IEEE/OSA Journal of Lightwave Technology, vol. 30, no. 8, pp. 1237-1243, April 2012 (Invited)

41. Z. Wang, C. Yu, W. Zhong, J. Chen, and W. Chen, “Performance of a novel LED lamp arrangement to reduce SNR fluctuation for multi-user visible light communication systems,” Optics Express, vol. 20, no. 4, pp. 4564-4573, February 2012

42. X. Shao, P.Y. Kam, and C. Yu, “Maximum likelihood sequence detection in laser phase noise - impaired coherent optical systems,” Optics Express, vol. 19, no. 23, pp. 22600-22606, November 2011

43. J. Yang, C. Yu, Y. Yang, L. Cheng, Z. Li, C. Lu, A.P.T. Lau, H.Y. Tam, and P.K.A. Wai, “PMD-insensitive CD monitoring based on RF clock power ratio measurement with optical notch filter,” IEEE Photonics Technology Letters, vol. 23, no. 21, pp. 1576-1578, November 2011

44. Z. Wang, C. Yu, W. Zhong, and J. Chen, “Performance Improvement by Tilting Receiver Plane in M-QAM OFDM Visible Light Communications,” Optics Express, vol. 19, no. 14, pp. 13418-13427, July 2011

45. S. Zhang, L. Xu, P.Y. Kam, C. Yu, J. Chen, and T. Wang, “A performance investigation of adaptive phase estimations in coherent optical communications,” IEEE Photonics Technology Letters, vol. 23, no. 8, pp. 462 - 464, April 2011

46. B. Dong, J. Hu, C. Liaw, J. Hao, and C. Yu, “Wideband-tunable nanotube Q-switched low threshold erbium doped fiber laser,” Applied Optics, vol. 50, no. 10, pp. 1442-1445, March 2011

47. J. Yang, C. Yu, L. Cheng, Z. Li, C. Lu, A.P.T. Lau, H.Y. Tam, and P.K.A. Wai, “CD-insensitive PMD monitoring based on RF power measurement,” Optics Express, vol. 19, no. 2, pp. 1354-1359, January 2011

48. J. Hu, and C. Yu, “Low power autocorrelation technique based on the degree-of-polarization measurement,” Optics Communications, vol. 283, no. 24, pp. 4928-4932, December 2010

49. T.S.R. Shen, A.P.T. Lau, and C. Yu, “Simultaneous and independent multi-parameter monitoring with fault localization for DSP-based coherent communication systems,” Optics Express, vol. 18, no. 23, pp. 23608-23619, November 2010

50. J. Hu, Z. Chen, X. Yang, J. Ng, and C. Yu, “100-km Long Distance Fiber Bragg Grating Sensor System Based on Erbium Doped Fiber and Raman Amplification,” IEEE Photonics Technology Letters, vol. 22, no. 19, pp. 1422 - 1424, October 2010

51. S. Zhang, P. Y. Kam, C. Yu, and J. Chen, “Decision-aided carrier phase estimation for coherent optical communications,” IEEE/OSA Journal of Lightwave Technology, vol. 28, no. 11, pp. 1597 – 1607, June 2010

52. Z. Li, C. Yu, Y. Dong, L. 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 differential-group-delay element and an optical phase modulator,” Optics Letters, vol. 35, no. 11, pp. 1881-1883, May 2010

53. S. Zhang, P. Y. Kam, C. Yu, and J. Chen, “Bit-error rate performance of coherent optical M-ary PSK/QAM using decision-aided maximum likelihood phase estimation,” Optics Express, vol. 18, no. 12, pp. 12088 – 12103, May 2010

54. S. Zhang, L. Xu, J. Yu, M.-F. Huang, P. Y. Kam, C. Yu, and T. Wang, “Dual-stage cascaded frequency offset estimation for digital coherent receivers,” IEEE Photonics Technology Letters, vol. 22, no. 6, pp. 401-403, March 2010

55. S. Zhang, X. Li, P. Y. Kam, C. Yu, and J. Chen, “Pilot-assisted, decision-aided, maximum likelihood phase estimation in coherent optical phase-modulated systems with nonlinear phase noise,” IEEE Photonics Technology Letters, vol. 22, no. 6, pp. 380-382, March 2010

56. J. Yang, J. Hu, C. Yu, Y.K. Yeo, and Y. Wang, “Multi-channel 80-GHz RZ pulse train generation based on parametric process in highly-nonlinear fiber,” Optics Communications, vol. 283, no. 6, pp. 939-945, March 2010

57. Z. Li, Z. Jian, L. Cheng, Y. Yang, C. Lu, A.P.T. Lau, C. Yu, H.-Y. Tam, and P.K.A. Wai, “Signed chromatic dispersion monitoring of 100Gbit/s CS-RZ DQPSK signal by evaluating the asymmetry ratio of delay tap sampling,” Optics Express, vol. 18, no. 3, pp. 3149-3157, February 2010

58. Z. Pan, C. Yu, and A.E. Willner, “Optical performance monitoring for the next generation optical communication networks,” Optical Fiber Technology, vol. 16, no. 1, pp. 20-45, January 2010 (Invited)

59. S. Zhang, C. Yu, P.Y. Kam, and J. Chen, “Parallel implementation of decision-aided maximum likelihood phase estimation in coherent M-ary phase-shift keying systems,” IEEE Photonics Technology Letters, vol. 21, no. 19, pp. 1471-1473, October 2009

60. S. Zhang, P.Y. Kam, C. Yu, and J. Chen, “Laser linewidth tolerance of decision-aided maximum likelihood phase estimation in coherent optical M-ary PSK and QAM systems,” IEEE Photonics Technology Letters, vol. 21, no. 15, pp. 1075-1077, August 2009

61. C. Yu, Y. Wang, Z. Pan, T. Luo, S. Kumar, B. Zhang, and A.E. Willner, “Carrier-suppressed 160-GHz pulse-train generation using a 40-GHz phase modulator with polarization-maintaining fiber,” Optics Letters, vol. 34, no. 11, pp. 1657-1659, June 2009

62. J. Yang, C. Yu, Z. Chen, J. Ng and X. Yang, “Suppression of polarisation-induced signal fluctuation in optic distributed sensing system based on stimulated Brillouin scattering,” Electronics Letters, vol. 45, no. 3, pp. 154-156, January 2009

63. S. Zhang, P.Y. Kam, J. Chen, and C. Yu, “Decision-aided maximum likelihood detection in coherent optical phase-shift-keying system,” Optics Express, vol. 17, no. 2, pp. 703-715, January 2009

64. G.J. Pendock, X. Yi, C. Yu, and W. Shieh, “Dispersion-monitoring in WDM systems by injecting modulated ASE,” IEEE Photonics Technology Letters,  vol. 20, no. 10, pp. 821 - 823, May 2008

65. L. Zhang, T. Luo Y. Yue, C. Yu, and A.E. Willner, “Photosensitivity-enabled dispersion controllability for quasi-phase-matching in photonic crystal fibers,” Optics Letters, vol. 32, no. 24, pp. 3498-3500, December 2007

66. L. Zhang, T. Luo, C. Yu, W. Zhang, and A.E. Willner, “Pattern dependence of data distortion in slow-light elements,” IEEE/OSA Journal of Lightwave Technology, vol. 25, no. 7, pp. 1754-1760, July 2007

67. Z. Pan, S. Chandel, and C. Yu, “Ultrahigh-speed optical pulse generation using a phase modulator and two stages of delayed Mach-Zehnder interferometers,” Optical Engineering, vol. 46, no. 7, Paper 075001, pp. 1-3, July 2007

68. Y. Wang, C. Yu, L.-S. Yan, A.E. Willner, R. Roussev, C. Langrock, M.M. Fejer, Y. Okawachi, J.E. Sharping, and A.L. Gaeta, “44-ns continuously tunable dispersionless optical delay element using a PPLN waveguide with two-pump configuration, DCF, and a dispersion compensator,” IEEE Photonics Technology Letters,  vol. 19, no. 11, pp. 861-863, June 2007

69. C. Yu, Z. Pan, T. Luo, Y. Wang, L. Christen, and A.E. Willner, “Beyond 40-GHz return-to-zero optical pulse train generation using a phase modulator and polarization-maintaining fiber,” IEEE Photonics Technology Letters,  vol. 19, no. 1, pp. 42-44, January 2007

70. C. Yu, T. Luo, L. Zhang, and A.E. Willner, “Data pulse distortion induced by a slow light tunable delay line in optical fiber,” Optics Letters, vol. 32, no.1, pp. 20-22, January 2007

71. C. Yu, T. Luo, B. Zhang, Z. Pan, M. Adler, Y. Wang, J.E. McGeehan, and A.E. Willner, “Wavelength-shift-free 3R regenerator for 40-Gb/s RZ system by optical parametric amplification in fiber,” IEEE Photonics Technology Letters,  vol. 18, no. 24, pp. 2569-2571, December 2006

72. T. Luo, C. Yu, L.-S. Yan, S. Kumar, Z. Pan, and A.E. Willner, “Simple autocorrelation technique based on degree-of-polarization measurement,” IEEE Photonics Technology Letters, vol. 18, no. 15, pp. 1606 - 1608, August 2006

73. L.-S. Yan, X.S. Yao, C. Yu, Y. Wang, L. Lin, Z. Chen, and A.E. Willner, “High-speed and highly repeatable polarization-state analyzer for 40-Gb/s system performance monitoring,” IEEE Photonics Technology Letters, vol. 18, no. 4, pp. 643 - 645, February 2006

74. T. Luo, C. Yu, Z. Pan, Y. Wang, J.E. McGeehan, M. Adler, and A.E. Willner, “All-optical chromatic dispersion monitoring of a 40-Gb/s RZ signal by measuring the XPM-generated optical tone power in a highly nonlinear fiber,” IEEE Photonics Technology Letters, vol. 18, no. 2, pp. 430 - 432, January 2006

75. L. Zhang, C. Yang, C. Yu, T. Luo, and A.E. Willner, “PCF-based polarization splitters with simplified structures,” IEEE/OSA Journal of Lightwave Technology, vol. 23, no. 11, pp. 3558 - 3565, November 2005

76. T. Luo, C. Yu, Z. Pan, Y. Wang, Y. Arieli, and A.E. Willner, “Dispersive effects monitoring for RZ data by adding a frequency-shifted carrier along the orthogonal polarization state,” IEEE/OSA Journal of Lightwave Technology, vol. 23, no. 10, pp. 3295 - 3301, October 2005

77. Y. Wang, C. Yu, T. Luo, Z. Pan, L.-S. Yan, and A.E. Willner, “Tunable all-optical wavelength conversion and wavelength multicasting using orthogonally polarized fiber FWM,” IEEE/OSA Journal of Lightwave Technology, vol. 23, no.10, pp. 3331 - 3338, October 2005

78. L.-S. Yan, Y. Wang, B. Zhang, C. Yu, J. McGeehan, L. Paraschis, and A.E. Willner, “Reach extension in 10-Gb/s directly modulated transmission systems using asymmetric and narrowband optical filtering,” Optics Express, vol. 13, no. 13, pp. 5106-5115, June 2005

79. L.-S. Yan, C. Yu, Y. Wang, T. Luo, L. Paraschis, and A.E. Willner, “40-Gb/s transmission over 25 km of negative-dispersion fiber using asymmetric narrow-band filtering of a commercial directly modulated DFB laser,” IEEE Photonics Technology Letters, vol. 17, no. 6, pp. 1322-1324, June 2005

80. C. Yu, L. Christen, T. Luo, Y. Wang, Z. Pan, L.-S. Yan, and A.E. Willner, “All-optical XOR gate using polarization rotation in single highly–nonlinear fiber,” IEEE Photonics Technology Letters, vol. 17, no. 6, pp. 1232-1234, June 2005

81. C. Yu, L.-S. Yan, T. Luo, Y. Wang, Z. Pan, and A.E. Willner, “Width-tunable optical RZ pulse train generation based on four-wave mixing in highly-nonlinear fiber,” IEEE Photonics Technology Letters, vol. 17, no. 3, pp. 636-638, March 2005

82. Z. Pan, Y.W. Song, C. Yu, Y. Wang, and A.E. Willner, “Using sampled nonlinearly-chirped fiber Bragg gratings to achieve 40-Gbit/s tunable multi-channel dispersion compensation,” Optics Communications, vol. 241, no. 4-6, pp. 371-375, November 2004

83. C. Yu, Z. Pan, Y. Wang, Y.W. Song, D. Gurkan, M.C. Hauer, D. Starodubov and A.E. Willner, “Polarization-insensitive all-optical wavelength conversion using dispersion-shifted fiber with a fiber Bragg grating and a Faraday rotator mirror,” IEEE Photonics Technology Letters, vol. 16, no. 8, pp. 1906 - 1908, August 2004

84. S.M.R. Motaghian Nezam, Y.W. Song, C. Yu, J. McGeehan, A.B. Sahin, and A.E. Willner, “First order PMD monitoring for NRZ data using RF clock regeneration techniques,” IEEE/OSA Journal of Lightwave Technology, vol. 22, no. 4, pp. 1086 - 1093, April 2004

85. C. Yu, Q. Yu, Z. Pan, A.B. Sahin, and A.E. Willner, “Optically compensating the PMD-induced RF power fading for single-sideband subcarrier-multiplexed systems,” IEEE Photonics Technology Letters, vol. 16, no. 1, pp. 341 –343, January 2004

86. Z. Pan, Y.W. Song, C. Yu, Y. Wang, Q. Yu, J. Popelek, H. Li, Y. Li, and A.E. Willner, “Tunable chromatic dispersion compensation in 40-Gb/s systems using nonlinearly chirped fiber Bragg gratings,” IEEE/OSA Journal of Lightwave Technology, vol. 20, no. 12, pp. 2239 –2246, December 2002

87. Y.W. Song, Z. Pan, S.M.R. Motaghian Nezam, C. Yu, Y. Wang, D. Starodubov, V. Grubsky, J.E. Rothenberg, J. Popelek, H. Li, Y. Li, R. Caldwell, R. Wilcox, and A.E. Willner, “Tunable dispersion slope compensation for 40-Gb/s WDM systems using broadband nonchannelized third-order chirped fiber Bragg gratings,” IEEE/OSA Journal of Lightwave Technology, vol. 20, no. 12, pp. 2259 –2266, December 2002

88. Z. Pan, Y. Wang, C. Yu, T. Luo, A.B. Sahin, Q. Yu, and A.E. Willner, “Intrabit polarization diversity modulation for the mitigation of PMD effects,” IEEE Photonics Technology Letters, vol. 14, no. 10, pp. 1466 –1468, October 2002

89. M.R. Wang, C. Yu, and A.J. Varela, “Efficient pseudo-nondiffracting beam shaping using a quasicontinuous-phase diffractive element,” Optical Engineering, vol. 40, no. 4, pp. 517-524, April 2001

90. C. Yu, M.R. Wang, A.J. Varela, and B. Chen, “High-density non-diffracting beam array for optical interconnection,” Optics Communications, vol. 177, no. 1-6, pp. 369-376, April 2000

91. X.H. Guang, M.R. Wang, and C. Yu, “High-efficiency flat-top beam shaper fabricated by a nonlithographic technique,” Optical Engineering, vol. 38, no. 2, pp. 208-213, February 1999

(CONFERENCE PROCEEDINGS, 39 invited, including OFC2012)

92. J. Chen, X. You, H. Zheng, and C. Yu, “MPPM Dimming Control for OFDM-based Visible Light Communication Systems,” 14th IEEE International Conference on Communication Systems (ICCS) 2014, Paper SS10-1, pp. 1-5, Macau, November 19-21, 2014 (Invited)

93. C. Yu, “Carrier recovery for digital coherent transmission,” Asia Communications and Photonics Conference and Exhibition (ACP) 2014, pp. 1, Shanghai, China, November 11-14, 2014 (Invited Talk in Workshop “What Else Is Needed for Coherent Transmission”)

94. Y. Fan, J. Chen, P. Cao, and C. Yu, “Performance of Digital Phase Estimation QPSK Optical Coherent Receiver With N Bit Resolution ADCs,” 13th International Conference on Optical Communications and Networks (ICOCN) 2014, Paper M32.3, pp. 1-4, Suzhou, China, November 9-10, 2014 (Invited)

95. J. Chen, N. Ma, H. Yang, and C. Yu, “On the performance of MU-MIMO indoor visible light communication system based on THP algorithm,” 3rd IEEE/CIC International Conference on Communications in China (ICCC) 2014, Paper OCSN-2, pp. 1-5, Shanghai, China, October 13-15, 2014 (Invited)

96. J. Chen, X. You, H. Zheng, and C. Yu, “Excess signal transmission with dimming control pattern in indoor visible light communication systems,” Photonics Asia 2014, Paper 9270-40, pp. 1-8, Beijing, China, October 9-11, 2014 (Invited)

97. P. Luo, Z. Ghassemlooy, H. Le Minh, A. Khalighi, X. Zhang, M. Zhang, and C. Yu, “Experimental demonstration of an indoor visible light communication positioning system using dual-tone multi-frequency technique,” 3rd International Workshop on Optical Wireless Communications (IWOW) 2014, pp. 55-59,  Funchal, Madeira Island, Portugal, September 17, 2014

98. J. Chen, Y. Hong, X. You, H. Zheng, and C. Yu, “Conceptual design of multi-user visible light communication systems over indoor lighting infrastructure,” 9th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) 2014, Paper 355, pp. 1-4, Manchester, UK, July 23-25, 2014 (Invited)

99. Y. Hong, J. Chen, and C. Yu, “Performance improvement of the pre-coded multi-user MIMO indoor visible light communication system,” 9th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) 2014, Paper 62, pp. 1-4, Manchester, UK, July 23-25, 2014

100. Y. Yu and C. Yu, “Pulse carver alignment monitoring for RZ-DPSK and DQPSK signals based on delay-tap sampling technique,” 9th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) 2014, Paper 233, pp. 1-4, Manchester, UK, July 23-25, 2014

101. Z. Xu, P.Y. Kam, and C. Yu, “Performance of pilot-assisted maximum likelihood sequence detection for QAM signals,” Signal Processing in Photonics Communications Conference, OSA Advanced Photonics Congress (SPPCom) 2014, Paper SW1C.2, pp. 1-3, San Diego, CA, USA, July 13-17, 2014

102. C. Yu and Y. Yu, “Optical performance monitoring in fiber transmission systems based on electrical sampling technique,” 16th International Conference on Transparent Optical Networks (ICTON) 2014, Paper V.1, pp. 1-4, Graz, Austria, July 6-10, 2014 (Invited)

103. H. Zheng, C. Yu, and H. Kim, “The performance of inter-satellite BFSK and 4FSK optical communication system with pointing error,” OptoElectronics and Communications Conference (OECC) 2014, Paper TU3F-3, pp. 1-3, Melbourne, Australia, July 6-10, 2014

104. Z. Xu, H. Zheng, C. Yu, and P.Y. Kam, “Performance of pilot-assisted maximum-likelihood sequence detection in a rotated-8QAM coherent optical system,” OptoElectronics and Communications Conference (OECC) 2014, Paper TH10E-1, pp. 1-3, Melbourne, Australia, July 6-10, 2014

105. X. Li, Zhuoran Xu, W.D. Zhong, A. Alphones and C. Yu, “Independent component analysis based modified constant modulus algorithm in coherent optical receiver,” OptoElectronics and Communications Conference (OECC) 2014, Paper TH10E-3, pp. 1-3, Melbourne, Australia, July 6-10, 2014

106. X. Li, Z. Xu, W.D. Zhong, A. Alphones, C. Yu, and Z.W. Xu, “Channel equalization based on QR decomposition in direct detection optical DFT-S OFDM,” OptoElectronics and Communications Conference (OECC) 2014, Paper TH10E-3, pp. 1-3, Melbourne, Australia, July 6-10, 2014

107. C. Yu，P.Y. Kam，and Z. Xu, “Carrier recovery in coherent receiver of optical fiber communication system with laser phase noise,” International Photonics and OptoElectronics Meetings (POEM) 2014, Paper OTh3B.1, pp. 1-3, Wuhan, China, June 18-21, 2014 (Invited)

108. S. Cao, P.Y. Kam, and C. Yu, “Pilot-aided log-likelihood ratio for LDPC coded M-QAM CO-OFDM system,” Conference on Optical Fiber Communication (OFC) 2014, Paper W3J.1, pp. 1-3,  San Francisco, CA, USA, March 9-13, 2014

109. Y. Yu and C. Yu, “OSNR monitoring by using single sampling channel generated 2-D phase portrait,” Conference on Optical Fiber Communication (OFC) 2014, Paper Th2A.49, pp. 1-3,  San Francisco, CA, USA, March 9-13, 2014

110. X. Li, W.D. Zhong, A. Alphones and C. Yu, “Channel equalization based on independent component analysis for coherent optical PDM-OFDM,” Conference on Optical Fiber Communication (OFC) 2014, Paper Tu3G.2, pp. 1-3,  San Francisco, CA, USA, March 9-13, 2014

111. J. Zhou, H. Kim, and C. Yu, “10-Gb/s, 20-km VCSEL optical access link at 1.5 μm with 23-dB power budget,” Conference on Optical Fiber Communication (OFC) 2014, Paper W2A.2, pp. 1-3,  San Francisco, CA, USA, March 9-13, 2014

112. J. Chen, Y. Hong, Z. Wang, and C. Yu, “Precoded visible light communications,” Paper. P0273, 9^th International Conference on Information, Communications and Signal Processing (ICICS) 2013, pp. 1-4, Tainan, Taiwan, December 10-13, 2013 (Invited)

113. D. Huang, T.-H. Cheng, and C. Yu, “Decision-aided carrier phase estimation with selective averaging for low-cost optical coherent communication,” 9^th International Conference on Information, Communications and Signal Processing (ICICS) 2013, Paper. P0214, pp. 1-4, Tainan, Taiwan, December 10-13, 2013

114. J. Chen, Y. Hong, Z. Wang, and C. Yu, “Enhanced signal processing and system configurations for visible light communication,” Asia Communications and Photonics Conference and Exhibition (ACP) 2013, pp. 1-3, Beijing, China, November 12-15, 2013 (Invited)

115. J. Chen, Y. Hong, X. Ma, Z. Wang, and C. Yu, “Advanced technologies in visible light communication systems,” Paper V-2.1, 11^th International Conference on Optical Internet (COIN) 2013, pp. 1-3, Beijing, China, October 18-20, 2013 (Invited)

116. X. Ma, J. Chen, X. You, and C. Yu, “Time domain reshuffling of DC-biased optical OFDM signals,” 11^th International Conference on Optical Internet (COIN) 2013, Paper. V-3.5, pp. 1-3, Beijing, China, October 18-20, 2013

117. C. Yu, Z. Chen, and J. Hu, “Biomedical optical fiber sensor,” Australian Biomedical Engineering Conference (ABEC) 2013, Paper a54, pp. 1, Sydney, Australia, October 13-16, 2013 (Invited)

118. C. Yu, and Y. Yu, “OSNR monitoring in optical fiber communication systems,” International Conference on Lasers, Optics & Photonics (OPTICS) 2013, pp. 1, San Antonio, TX, USA, October 7-9, 2013 (Invited)

119. J. Chen, X. Ma, and C. Yu, “Time domain reshuffling of asymmetrically clipped optical OFDM signals," IEEE Photonics Conference (IPC) 2013, pp. 1-2, Bellevue, WA, USA, September 8-12, 2013

120. Y. Yu, C.F. Loh, Z. Xu and C. Yu, “OSNR Monitoring for PDM RZ-DQPSK System by Low Bandwidth Sampling Technique,” Asia-Pacific Conference on Communications (APCC) 2013, Paper V-2.1, pp. 1-2, Bali Dynasty Resort, Bali, Indonesia, August 29-31, 2013

121. Y. Yu and C. Yu, “Simultaneous OSNR and CD Monitoring for NRZ-DPSK and DQPSK Signals by Single-Channel Sampling Technique,” Asia-Pacific Conference on Communications (APCC) 2013, Paper VII-3.1, pp. 1-2, Bali Dynasty Resort, Bali, Indonesia, August 29-31, 2013

122. C. Yu, and Y. Yu, “Optical performance monitoring in high-speed fiber communication systems based on low-bandwidth delay-tap sampling,” 8^th International Conference on Communications and Networking in China (ChinaCom) 2013, pp. 1-4, Guilin, China, August 14-16, 2013 (Invited)

123. Z. Chen, J. Hu, and C. Yu, “Fiber senor for long-range and biomedical measurements,” 12^th International Conference on Optical Communications and Networks (ICOCN) 2013, Paper SC2In1, Paper SC2In2, pp. 1-4, Chengdu, China, July 26-28, 2013 (Invited)

124. C. Yu, and Y. Yu, “Optical performance monitoring based on filtering in high-speed optical fiber communication systems,” Signal Processing in Photonics Communications Conference, OSA Advanced Photonics Congress (SPPCom) 2013, Paper SP4D.4, pp. 1-3, Rio Grande, Puerto Rico, USA, July 14-17, 2013  (Invited)

125. X. Li, A. Alphones, W.D. Zhong and C. Yu, “Improved U-S OFDM for fiber nonlinearity mitigation in long haul transmission,” OptoElectronics and Communications Conference (OECC) 2013, Paper TuR4-5, pp. 1-2, Kyoto, Japan, June 30-July 4, 2013

126. Z. Xu, C. Yu, and P.Y. Kam, “Performance of adaptive maximum likelihood sequence detection with nonlinear phase Noise,” OptoElectronics and Communications Conference (OECC) 2013, Paper TuPR-16, pp. 1-2, Kyoto, Japan, June 30-July 4, 2013

127. W. Zhong, Z. Wang, and C. Yu, “Performance enhancement techniques for free-space optical transmission systems,” 15th Anniversary International Conference on Transparent Optical Networks (ICTON) 2013, Paper TuA3.1, pp. 1-4, Cartagena, Spain, June 23-27, 2013 (Invited)

128. Z. Xu, B. Zhang, C. Yu, and P.Y. Kam, “Adaptive maximum likelihood sequence detection in 100-Gb/s coherent optical communication systems,” Conference on Optical Fiber Communication (OFC) 2013, Paper JTh2A.46, pp. 1-3,  Anaheim, CA, USA, March 17-21, 2013

129. S. Cao, S. Zhang, C. Yu, and P.Y. Kam, “Full-range pilot-assisted frequency offset estimation for OFDM systems,” Conference on Optical Fiber Communication (OFC) 2013, Paper JW2A.53, pp. 1-3,  Anaheim, CA, USA, March 17-21, 2013

130. H. Ju, C. Yu, C.P. Chin, and Y.S. Kwok, “LED-camera communication system with RGB coding,” IEEE Photonics Global Conference (PGC) 2012, Paper 2-3G-4, pp. 1-4, Singapore, December 13-16, 2012

131. Y. Yu, J. Yang, and C. Yu, “Optical signal to noise ratio monitoring using a novel optical notch filtering scheme,” IEEE Photonics Global Conference (PGC) 2012, Paper 2-2G-4, pp. 1-4, Singapore, December 13-16, 2012

132. S. Cao, C. Yu, and P.Y. Kam, “Mitigation of nonlinearity based on optimized percentage of dispersion pre-compensation in coherent optical PDM-OFDM systems,” IEEE Photonics Global Conference (PGC) 2012, Paper 2-1G-3, pp. 1-4, Singapore, December 13-16, 2012

133. C. Yu, J. Yang, and Y. Yu, “Dispersion and OSNR monitoring in high-speed optical fiber communication system,” 11^th International Conference on Optical Communications and Networks (ICOCN) 2012, Paper FRI-18, pp. 1-4, Pattaya, Thailand, November 28-30, 2012 (Invited)

134. Z. Wang, J. Chen, W. Zhong, C. Yu, and W. Chen, “User-oriented visible light communication system with dimming control scheme,” 11^th International Conference on Optical Communications and Networks (ICOCN) 2012, Paper THU-09, pp. 1-4, Pattaya, Thailand, November 28-30, 2012 (Invited)

135. Y. Yu, J. Yang, and C. Yu, “Low cost and CD insensitive optical signal to noise ratio monitoring method using beat noise,” International Conference on Communications Systems (ICCS) 2012, Paper MC7-2, pp. 1-4, Singapore, November 21-23, 2012

136. C. Yu, P.Y. Kam, and S. Cao, “Decision-aided phase estimation in single carrier and OFDM coherent optical communication systems,” Asia Communications and Photonics Conference and Exhibition (ACP) 2012, Paper AS4C.1, pp. 1-4, Guangzhou, China, November 7-10, 2012 (Invited)

137. C. Yu, “Optical performance monitoring in high-speed reconfigurable optical fiber communication networks,” 7^th International Conference on Communications and Networking in China (ChinaCom) 2012, Paper OCN04-1, pp. 1-4, Dianchi Garden Hotel, Kunming, China, August 8-10, 2012 (Invited)

138. S. Cao, P.Y. Kam, and C. Yu, “Log-likelihood Metric for LDPC coded BDPSK-OFDM Transmission,” OptoElectronics and Communications Conference (OECC) 2012, Paper 4B3-4, pp. 1-2, BEXCO, Busan, Korea, July 2-6, 2012

139. S. Cao, P.Y. Kam, and C. Yu, “Pre-distortion versus Post-equalization for IQ Mismatch Compensation in CO-OFDM,” OptoElectronics and Communications Conference (OECC) 2012, Paper 4B3-2, pp. 1-2, BEXCO, Busan, Korea, July 2-6, 2012

140. Z. Wang, W. Zhong, C. Yu, J. Chen, and W. Chen, “Performance of variable M-QAM OFDM visible light communication system with dimming control,” OptoElectronics and Communications Conference (OECC) 2012, Paper 6B1-3, pp. 1-2, BEXCO, Busan, Korea, July 2-6, 2012

141. C. Yu, P.Y. Kam, S. Zhang and J. Chen, “Decision-aided carrier phase estimation for coherent optical communication systems,” Signal Processing in Photonics Communications Conference, OSA Advanced Photonics Congress (SPPCom) 2012, Paper SpTh1B.1, pp. 1-2, Cheyenne Mountain Resort, Colorado Springs, CO, USA, June 19-21, 2012 (Invited)

142. C. Yu, “Dispersion monitoring in high-speed optical communication systems,” 21^st Wireless and Optical Communications Conference (WOCC) 2012, pp. 16-19, Kaohsiung, Taiwan, April 19-21, 2012 (Invited)

143. C. Yu, P.Y. Kam, S. Zhang and J. Chen, “Phase estimation in coherent optical fiber communication systems with advanced modulation formats,” Conference on Optical Fiber Communication (OFC) 2012, Paper OTu2G.7, pp. 1-3,  Los Angeles, CA, USA, March 4-8, 2012 (Invited)

144. Z. Wang, C. Yu, W. Zhong, and J. Chen, “A novel LED arrangement to reduce SNR fluctuation for multi-user in visible light communication systems,” International Conference on Information, Communications and Signal Processing (ICICS) 2011, Paper TM6, pp. 1-4, Singapore, December 13-16, 2011

145. Z. Wang, W. Zhong, and C. Yu, “Dynamic decision threshold and adaptive coherent detection in FSO communication system,” International Conference on Information, Communications and Signal Processing (ICICS) 2011, Paper WA6, pp. 1-5, Singapore, December 13-16, 2011

146. C. Yu, J. Yang, J. Hu, and B. Zhang, “Chromatic dispersion monitoring based on RF spectrum analysis and delay-tap sampling,” 10^th International Conference on Optical Communications and Networks (ICOCN) 2011, Paper WE1, pp. 1-2, Guangzhou, China, December 5-7, 2011 (Invited)

147. J. Chen, C. Yu, Z. Wang, J. Shen, and Y. Li, “Indoor optical wireless integrated with white LED lighting: perspective & challenge,” 10^th International Conference on Optical Communications and Networks (ICOCN) 2011, Paper MO6, pp. 1-2, Guangzhou, China, December 5-7, 2011 (Invited)

148. C. Yu, J. Yang, J. Hu, and B. Zhang, “Optical performance monitoring in high-speed optical fiber communication systems,” International Photonics and OptoElectronics Meetings (POEM) 2011, Paper OCSN-2, pp. 1-10, Wuhan, China, November 2-5, 2011 (Invited)

149. J. Hu, Z. Chen, and C. Yu, “150-km long distance fiber sensor system based on Raman amplification,” IEEE Sensors Conference 2011, Paper 1319, pp. 113-116, Limerick, Ireland, October 28-31, 2011

150. W. Chen, C. Yu, Y.S. Kwok and F. Chin, “Video Transmission System Based On Visible Light Communication,” International Conference on Information Photonics & Optical Communications (IPOC) 2011, Paper 1-3C-3, pp. 1-3, Singapore, October 21-23, 2011

151. X. Shao, C. Yu, and P.Y. Kam, “Joint carrier phase estimation and maximum likelihood sequence detection (J-CPE-MLSD) in coherent optical systems with laser phase noise,” International Conference on Information Photonics & Optical Communications (IPOC) 2011, Paper 2-2C-2, pp. 1-3, Singapore, October 21-23, 2011

152. S. Cao, C. Yu, and P.Y. Kam, “Decision-aided joint compensation of channel distortion and transmitter IQ imbalance for coherent optical OFDM,” IEEE Topical Meeting on Microwave Photonics (MWP) 2011, pp. 312-315, Singapore, October 18-21, 2011

153. C. Yu, P.Y. Kam, S. Zhang and J. Chen, “Phase and frequency offset estimation in coherent optical fiber communication systems,” OptoElectronics and Communications Conference (OECC) 2011, Paper 7B2_1, pp. 1-2, Kaohsiung, Taiwan, July 4-8, 2011 (Invited)

154. S. Cao, C. Yu, and P.Y. Kam, “Decision-aided carrier phase estimation for coherent optical OFDM,” OptoElectronics and Communications Conference (OECC) 2011, Paper 7B2_3, pp. 1-2, Kaohsiung, Taiwan, July 4-8, 2011

155. Z. Xu, S. Zhang, P.Y. Kam, and C. Yu, “On the performance of decision-aided maximum likelihood and its adaptive phase estimation with nonlinear phase noise,” OptoElectronics and Communications Conference (OECC) 2011, Paper 6B3_3, pp. 1-2, Kaohsiung, Taiwan, July 4-8, 2011

156. H. Zhang, C. Yu, and P.Y. Kam, “Optimal ring ratio of 16-Star quadrature amplitude modulation in coherent optical communication systems,” OptoElectronics and Communications Conference (OECC) 2011, Paper 7P3_030, pp. 1-2, Kaohsiung, Taiwan, July 4-8, 2011

157. C. Yu, P.Y. Kam, S. Zhang and J. Chen, “Carrier recovery based on digital signal processing in coherent optical fiber communication systems,” International Symposium on Photonics & Optical Communications (SPOC) 2011, Paper 6.3, pp. 1, Chengdu, China, July 1-3, 2011 (Invited)

158. J. Hu, J. Yang, F. Xu, and C. Yu, “Chromatic dispersion monitoring of RZ-DQPSK signal with low bandwidth detector by evaluating the amplitude ratio of delay tap sampling,” 3^rd International High Speed Intelligent Communication Forum (HSIC) 2011, Paper 14, pp. 1, Hong Kong, May 30-31, 2011

159. J. Hu, Z. Chen, J.T. Teo, and C. Yu, “100-km long distance FBG vibration sensor based on matching filter demodulation,” 21^st International Conference on Optical Fibre Sensors (OFS) 2011, Proceedings of SPIE, vol. 7753, 77538N, pp. 1-4, Ottawa, Canada, May 15-19, 2011

160. H. Zhang, P. Y. Kam, and C. Yu, “Laser linewidth tolerance of coherent optical 64QAM and 16PSK systems using decision-aided maximum likelihood phase estimation,” Conference on Lasers and Electro-Optics (CLEO) 2011, Paper JWA17, pp. 1-2, Baltimore, MD, USA. May 1-6, 2011

161. S. Zhang, L. Xu, P. Y. Kam, C. Yu, and T. Wang, “Study on the performance of decision-aided maximum likelihood phase estimation with a forgetting factor,” Conference on Optical Fiber Communication (OFC) 2011, Paper JWA022, pp. 1-3,  Los Angeles, CA, USA, March 6-10, 2011

162. J. Yang, C. Yu, and Z. Li, “PMD insensitive CD monitoring based on RF power ratio measurement utilizing FBG filter,” IEEE Photonics Global Conference (PGC) 2010, Paper 2-2F-5, pp. 1-5, Singapore, December 14-16, 2010

163. Z. Wang, W. Zhong, S. Zhang, C. Yu, and Y. Ding, “Performance evaluation of OOK free-space optical transmission system with dynamic decision threshold and coherent detection,” IEEE Photonics Global Conference (PGC) 2010, Paper 3-1F-4, pp. 1-5, Singapore, December 14-16, 2010

164. C. Yu and J. Yang, “CD and PMD monitoring based on RF spectrum analysis with optical filtering,” Asia Communications and Photonics Conference and Exhibition (ACP) 2010, Paper FN1, pp. 1-8, Shanghai, China, December 8-12, 2010 (Invited)

165. J. Yang, M. He, H. Lu, Z. Li, and C. Yu, “Chromatic dispersion monitoring of DQPSK and D8PSK signals based on delay-tap sampling technique,” International Conference on Communications Systems (ICCS) 2010, paper PM1-2-1-4, pp. 1-5, Singapore, November 17-19, 2010

166. Z. Li, L. Cheng, C. Lu, and C. Yu, “A novel dispersion monitoring scheme by evaluating eye diagram for 100Gbit/s CS-RZ DQPSK systems,” International Conference on Communications Systems (ICCS) 2010, paper PM1-2-1-2, pp. 1-5, Singapore, November 17-19, 2010

167. C. Yu, P.Y. Kam, S. Zhang, and J. Chen, “Phase estimation in coherent communication systems with semiconductor laser noises,” Photonics Asia 2010, Paper 7844-19, pp. 1-10, Beijing, China, October 18-20, 2010 (Invited)

168. H. Lu, S. Zhang, C. Yu, and P.Y. Kam, “Impact of amplifier beat and nonlinear phase noises on coherent optical communication system,” 9^th International Conference on Optical Communications and Networks (ICOCN) 2010, pp. 294-298, Nanjing, China, October 24-27, 2010

169. S. Zhang, C. Yu, P.Y. Kam, and J. Chen, “Performance comparison between decision-aided maximum likelihood and adaptive decision-aided phase estimation,” 9^th International Conference on Optical Communications and Networks (ICOCN) 2010, pp. 253-257, Nanjing, China, October 24-27, 2010

170. S. Zhang, L. Xu, P. Y. Kam, C. Yu, and T. Wang, “Performance investigation of the joint SPM compensation in a long-haul coherent dual-polarization QPSK system,” Europe Conference on Optical Communication (ECOC) 2010, Paper P3.15, pp. 1-3, Torino, Italy, September 19-23, 2010

171. C. Yu, J. Yang and J. Hu, “Nonlinear fiber based processing for high speed optical communication and sensor systems,” IEEE Photonics Society Summer Topical Meetings (SUM) 2010, Paper TuC2-3, pp. 1-2, Playa del Carmen, Riviera Maya, Mexico, July 19-21, 2010 (Invited)

172. J. Yang, C. Yu, L. Cheng, Z. Li, and C. Lu, “PMD insensitive CD monitoring based on RF power ratio in D8PSK and DQPSK systems,” 9^th International Conference on Optical Internet (COIN) 2010, Paper TuC3-3, pp. 1-4, Jeju, Korea, July 11-14, 2010

173. C. Yu, P.Y. Kam, S. Zhang and J. Chen, “Decision-aided maximum likelihood phase estimation in coherent communication systems,” OptoElectronics and Communications Conference (OECC) 2010, Paper 9B3-1, pp. 1-2, Sapporo, Japan, July 5-9, 2010 (Invited)

174. Z. Li, C. Yu, L. Cheng, L.F.K. Lui, C. Lu, A.P.T. Lau, H.Y. Tam, and P.K.A. Wai, “Stable photonic RF phase shifter based on a polarization sensitive optical phase modulator,” OptoElectronics and Communications Conference (OECC) 2010, Paper 6D2-6, pp. 1-2, Sapporo, Japan, July 5-9, 2010

175. S. Zhang, C. Yu, P.Y. Kam, and J. Chen, “Optimizing the performance of normalized least-mean square phase estimation for digital coherent receivers,” OptoElectronics and Communications Conference (OECC) 2010, Paper 7P-16, pp. 1-2, Sapporo, Japan, July 5-9, 2010

176. H. Zhang, S. Zhang, P.Y. Kam, C. Yu, and J. Chen, “Optimized phase error tolerance of 16-star quadrature amplitude modulation in coherent optical communication systems,” OptoElectronics and Communications Conference (OECC) 2010, Paper 8P-15, pp. 1-2, Sapporo, Japan, July 5-9, 2010

177. Y. Yu, H. Zhang, and C. Yu, “107-Gb/s WDM DQPSK Systems with 50 GHz Channel Spacing by Low-Crosstalk Demodulators,” OptoElectronics and Communications Conference (OECC) 2010, Paper 7P-23, pp. 1-2, Sapporo, Japan, July 5-9, 2010

178. S. Shen, A.P.T. Lau, and C. Yu, “Joint nonlinear parameters and OSNR monitoring for DSP-based coherent systems,” OptoElectronics and Communications Conference (OECC) 2010, Paper 7P-20, pp. 1-2, Sapporo, Japan, July 5-9, 2010

179. J. Hu, Z. Chen, X. Yang, J. Ng, and C. Yu, “100-km long distance FBG vibration sensor,” 2^nd Asia-Pacific Optical Sensors Conference (APOS) 2010, Paper P0093, pp. 1-2, Guangzhou, China, June 28-30, 2010

180. C. Yu, “High speed optical pulse train generation and measurement in optical fiber communication systems,” International High Speed Intelligent Communication Forum (HSIC) 2010, Paper TR74.6, pp. 1-2, Singapore, May 13-14, 2010 (Invited)

181. J. Yang, and C. Yu, “Broadband multi-wavelength light source generation using a single phase modulator in a loop,” Conference on Lasers and Electro-Optics (CLEO) 2010, Paper JThE56, pp. 1-2, San Jose, CA, USA. May 16-21, 2010

182. J. Yang, C. Yu, L. Cheng, Z. Li, C. Lu, A.P.T. Lau, H.Y. Tam, and P.K.A. Wai, “CD insensitive PMD monitoring by using FBG notch filter in 57-Gbit/s D8PSK and 38-Gbit/s DQPSK systems,” Conference on Lasers and Electro-Optics (CLEO) 2010, Paper CThDD4, pp. 1-2, San Jose, CA, USA. May 16-21, 2010

183. S. Zhang, P. Y. Kam, C. Yu, and J. Chen, “Frequency offset estimation using a Kalman filter in coherent optical phase-shift keying systems,” Conference on Lasers and Electro-Optics (CLEO) 2010, Paper CFC1, pp. 1-2, San Jose, CA, USA. May 16-21, 2010

184. S. Zhang, L. Xu, J. Yu, M.-F. Huang, P. Y. Kam, C. Yu, and T. Wang, “Novel ultra wide-range frequency offset estimation for digital coherent optical receiver,” Conference on Optical Fiber Communication (OFC) 2010 , Paper OMK1, pp. 1-3,  San Diego, CA, USA, March 21-25, 2010

185. S. Zhang, L. Xu, J. Yu, P. Y. Kam, C. Yu, and T. Wang, “Experimental demonstration of decision-aided maximum likelihood phase estimation in 8-channel 42.8-Gbit/s DWDM coherent PolMux-QPSK system,” Conference on Optical Fiber Communication (OFC) 2010, Paper OWV3, pp. 1-3,  San Diego, CA, USA, March 21-25, 2010

186. J. Yang, K.W.L. Chee, and C. Yu, “CD insensitive PMD monitoring for different modulation formats based on RF tone power measurement using an FBG notch filter,” 7^th International Conference on Information, Communications and Signal Processing (ICICS) 2009, Paper P0727, pp. 1-5, Macau, December 8-10, 2009

187. S. Zhang, J. Chen, C. Yu, W. Rong, and P. Y. Kam, “ADC bandwidth optimization in coherent optical polarization multiplexing quadrature phase-shift keying system,” Asia Communications and Photonics Conference and Exhibition (ACP) 2009 , Paper FC3, pp. 1-6, Shanghai, China, November 2-6, 2009

188. J. Hu, Z. Chen, X. Yang, J. Ng, C. Yu, “Long distance fiber Bragg grating sensor system based on Erbium-doped fiber and Raman amplification,” Asia Communications and Photonics Conference and Exhibition (ACP) 2009, Paper TuC5, pp. 1-6, Shanghai, China, November 2-6, 2009

189. J. Yang, J. Hu, C. Yu, Y.K. Yeo, and Y. Wang, “Multi-channel 80-GHz pulse train generation based on four-wave mixing in highly nonlinear fiber,” OptoElectronics and Communications Conference (OECC) 2009, Paper TuA5, pp. 1-2, Hong Kong, July 13-17, 2009

190. J. Hu, C. Yu, “An improved autocorrelation technique based on the degree-of-polarization measurement,” OptoElectronics and Communications Conference (OECC) 2009, Paper ThM4, pp. 1-2, Hong Kong, July 13-17, 2009

191. J. Yang, J. Hu, C. Yu, Y.K. Yeo, and Y. Wang, “80-GHz multi-channel RZ pulse train generation based on XPM and FWM in a nonlinear optical loop mirror,” 5^th International Conference on Materials for Advanced Technologies  (ICMAT) 2009, Paper P-S5.03, pp. 1-3, Singapore, June 28-July 3, 2009

192. J. Yang, C. Yu, Z. Chen, J. Ng, and X. Yang, “Polarization insensitivity optic distributed strain sensing system based on stimulated Brillouin scattering,” 5^th International Conference on Materials for Advanced Technologies  (ICMAT) 2009, P-S10.12, pp. 1-3, Singapore, June 28-July 3, 2009

193. X. Li, S. Zhang, C. Yu, and P. Y. Kam, “Pilot decision-aided maximum likelihood phase estimation in coherent optical QPSK and 8PSK systems with nonlinear phase noise,” Conference on Lasers and Electro-Optics (CLEO) 2009, Paper CMZ4, pp. 1-2, Baltimore, MD, USA, May 31-June 5, 2009

194. S. Zhang, P. Y. Kam, and C. Yu, “Block length effect of decision-aided maximum likelihood phase estimation in coherent optical communication systems,” Conference on Lasers and Electro-Optics (CLEO) 2009, Paper CMZ3, pp. 1-2, Baltimore, MD, USA, May 31-June 5, 2009

195. S. Zhang, P.Y. Kam, J. Chen, and C. Yu, “A comparison of phase estimation in coherent optical PSK system,” IEEE Photonics Global Conference (PGC) 2008, Paper C3-4A-03, Singapore, December 8-11, 2008

196. G.J. Pendock, W. Shieh, X. Yi, and C. Yu, “Measuring dispersion in WDM links with modulated background ASE,” OptoElectronics and Communications Conference (OECC) 2008, Paper WeK-2, pp. 1-2, Sydney, Australia, July 7-10, 2008

197. S. Zhang, P.Y. Kam, J. Chen, and C. Yu, “Adaptive decision-aided maximum likelihood phase estimation in coherent optical DQPSK system,” OptoElectronics and Communications Conference (OECC) 2008, Paper TuA-4, pp. 1-2, Sydney, Australia, July 7-10, 2008

198. S. Zhang, P.Y. Kam, J. Chen, and C. Yu, “Receiver sensitivity improvement using decision-aided maximum likelihood phase estimation in coherent optical DQPSK system with nonlinear phase noise,” Conference on Lasers and Electro-Optics (CLEO) 2008, Paper CthJJ2, pp. 1-2, San Jose, CA, USA, May 4-9, 2008

199. C. Yu, “Optical short pulse generation and measurement based on fiber polarization effects,” 16^th Wireless and Optical Communications Conference (WOCC) 2008, Paper Optical-11, pp. 66, Taichung, Taiwan, April 23-24, 2008 (Invited)

200. J. Yang, C. Yu, Z. Chen, J. Ng, and X. Yang, “Suppression of polarization sensitivity in BOTDA fiber distributed sensing system,” 19^th International Conference on Optical Fibre Sensors (OFS) 2008, Proceedings of SPIE, vol. 7004, Paper 700421, pp. 1-4, Perth, Australia, April 14-18, 2008

201. C. Yu, G.J. Pendock, X. Yi, and W. Shieh, “Dispersion measurement through WDM systems with modulated background ASE,” Conference on Optical Fiber Communication (OFC) 2008, Paper JWA29, pp. 1-3, San Diego, CA, USA, February 24-28, 2008

202. C. Yu, J. Yang, Z. Li, and Y. Wang, “Multi-channel 160-GHz pulse generator using a 40-GHz phase modulator and two stages of PM fiber,” 6^th International Conference on Information, Communications and Signal Processing (ICICS) 2007, Paper P0848, pp. 1-4, Singapore, December 10-13, 2007

203. C. Yu, Z. Li, J. Yang and Y. Wang, “Multi-channel high-speed optical pulse train generation based on phase modulation at half frequency,” Conference on Lasers and Electro-Optics (CLEO) 2007, Paper CMJJ7, pp. 1-2, Baltimore, MD, USA, May 6-11, 2007

204. Z. Li, Y.J. Wen, C. Yu, W. Rong, Y. Wang, and T.H. Cheng, “Optimizing Raman/EDFA hybrid amplifier based on dual-order stimulated Raman scattering of a single pump,” Conference on Lasers and Electro-Optics (CLEO) 2007, Paper JTuA63, pp. 1-2, Baltimore, MD, USA, May 6-11, 2007

205. Y. Dong, Z. Li, C. Yu, Y.J. Wen, Y. Wang, C. Lu, W. Hu and T.H. Cheng, “Generation of multi-channel short-pulse sources using nonlinear optical loop mirror based on photonic crystal fiber,” Conference on Optical Fiber Communication (OFC) 2007, Paper JWA9, pp. 1-3, Anaheim, CA, USA, March 25-29, 2007

206. C. Yu, “Applications of fiber nonlinearities in high-speed WDM optical communication systems,” 15^th Wireless and Optical Communications Conference (WOCC) 2006, Paper PS-4-2, pp. 1, Hangzhou, China, October 12-13, 2006 (Invited)

207. Z. Zhu, A.M.C. Dawes, D. Gauthier, M.D. Stenner, M.A. Neifeld, T. Luo, C. Yu, L. Zhang, and A.E. Willner, “Recent advances in stimulated Brillouin scattering slow light,” OSA Topical Meeting on Slow and Fast Light, Paper TuB1, pp. 1, Washington D.C., USA, July 23-26, 2006 (Invited)

208. Z. Pan, S. Chandel, and C. Yu, “160 GHz optical pulse generation using a 40 GHz phase modulator and two stages of delayed MZ interferometers,” Conference on Lasers and Electro-Optics (CLEO) 2006, Paper CFP2, pp. 1-2, Long Beach, CA, USA, May 21-26, 2006

209. C. Yu, L. Xu, and T. Wang, “>Six-times the transmission distance over standard single-mode fiber for 10-Gb/s directly-modulated system by off-center filtering and electronic equalization,” Conference on Lasers and Electro-Optics (CLEO) 2006, Paper CMNN4, pp. 1-2, Long Beach, CA, USA, May 21-26, 2006

210. T. Luo, L. Zhang, W. Zhang, C. Yu, S. Hu, and A.E. Willner, “Reduction of pattern dependent distortion on data in an SBS-based slow light fiber element by detuning the channel away from the gain peak,” Conference on Lasers and Electro-Optics (CLEO) 2006, Paper CThCC4, pp. 1-2, Long Beach, CA, USA, May 21-26, 2006

211. C. Yu, L. Xu, E. Ip, P.N. Ji, T. Wang, S. Murakami, Y. Yano, and T. Tajima, “Comparison of modulation formats for 40-Gbit/s DWDM optical fiber transmission systems with 50-GHz channel spacing,” IEEE Sarnoff Symposium 2006, Paper S4.5, pp. 1-4, Princeton, NJ, USA, March 27-28, 2006

212.  L. Zhang, T. Luo, W. Zhang, C. Yu, Y. Wang, and A.E. Willner, “Optimizing operating conditions to reduce data pattern dependence induced by slow light elements,” Conference on Optical Fiber Communication (OFC) 2006, Paper OFP7, pp. 1-3, Anaheim, CA, USA, March 5-10, 2006

213. A.E. Willner, L. Zhang, T. Luo, C. Yu, W. Zhang, and Y. Wang, “Data bit distortion induced by slow light in optical communication systems,” SPIE Photonics West ‘06, Proceedings of SPIE, vol. 6130, pp. 175-182, San Jose, CA, USA, January 21-26, 2006 (Invited)

214. C. Yu, T. Luo, L. Zhang, and A.E. Willner, “Distortion effects on data pulses in a slow light tunable delay line due to stimulated Brillouin scattering in a highly nonlinear fiber,” Europe Conference on Optical Communication (ECOC) 2005, Paper Mo4.5.2, pp. 1-2, Glasgow, Scotland, September 25-29, 2005

215. T. Luo, C. Yu, L.-S. Yan, S. Kumar, Z. Pan, A.E. Willner, and S. Yao, “Simple autocorrelation technique by tuning a DGD element and measuring a pulse's degree-of-polarization,” Europe Conference on Optical Communication (ECOC) 2005, Paper We2.3.3, pp. 1-2, Glasgow, Scotland, September 2005

216. Y. Wang, C. Yu, L.-S. Yan, A.E. Willner, R. Roussev, C. Langrock, and M.M. Fejer, “Continuously-tunable dispersionless 44-ns all optical delay element using a two-pump PPLN, DCF, and a dispersion compensator,” Europe Conference on Optical Communication (ECOC) 2005, Paper Th1.3.3, pp. 1-2, Glasgow, Scotland, September 25-29, 2005

217. L.-S. Yan, X Yao, L. Lin, Z. Chen, C. Yu, Y. Wang, and A.E. Willner, “<1-ms highly-repeatable polarization-state generator and analyzer for 40-Gb/s system performance monitoring,” Europe Conference on Optical Communication (ECOC) 2005, Paper Th3.2.3, pp. 1-2, Glasgow, Scotland, September 25-29, 2005

218. L. Zhang, T. Luo, L. Yan, Y. Wang, C. Yu, and A.E. Willner, “Periodic dispersion compensation induced by photo-sensitivity for achieving quasi-phase matching in holey fibers,” Conference on Lasers and Electro-Optics (CLEO) 2005 , Paper JWB49, pp. 1-2, Baltimore, MD, USA, May 22-27, 2005

219. C. Yu, T. Luo, B. Zhang, Z. Pan, M. Adler, Y. Wang, J.E. McGeehan, and A.E. Willner, “3R regeneration of a 40-Gbit/s optical signal by optical parametric amplification in a highly-nonlinear fiber,” Conference on Optical Fiber Communication (OFC) 2005 , Paper OTuO1, pp. 1-3, Anaheim, CA, USA, March 6-11, 2005

220. C. Yu, Z. Pan, T. Luo, S. Kumar, L.-S. Yan, B. Zhang, L. Zhang, Y. Wang, M. Adler, and A.E. Willner, “160-GHz pulse generator using a 40-GHz phase modulator and PM fiber,” Conference on Optical Fiber Communication (OFC) 2005 , Paper OThR5, pp. 1-3, Anaheim, CA, USA, March 6-11, 2005

221. T. Luo, Z. Pan, C. Yu, L.-S. Yan, S. Kumar, B. Zhang, M. Adler, A.E. Willner, and S. Yao, “Optical-fiber-based autocorrelation technique using a tunable DGD element and highly-nonlinear fiber,” Conference on Optical Fiber Communication (OFC) 2005, Paper OFH6, pp. 1-3, Anaheim, CA, USA, March 6-11, 2005

222. L.-S. Yan, T. Lu, B. Zhang, C. Yu, D. Yevick, and A.E. Willner, “Fiber transmission system application and limitation of multicanonical sampling in PMD emulation,” Conference on Optical Fiber Communication (OFC) 2005, Paper OThT4, pp. 1-3, Anaheim, CA, USA, March 6-11, 2005

223. Z. Pan, A.E. Willner, C. Yu, and Y. Wang, “Applications of highly nonlinear fiber in WDM communications systems,” OSA/SPIE Optics in the Southeast 2004, Paper D2, pp. 1, Charlotte, NC, USA, November 4-5, 2004 (Invited)

224. C. Yu, Z. Pan, T. Luo, Y. Wang, L. Christen, and A.E. Willner, “40-GHz RZ and CS-RZ pulse generation using a phase modulator and PM fiber,” Europe Conference on Optical Communication (ECOC) 2004, Paper We.4.P.125, pp. 1-2, Stockholm, Sweden, September 5-9, 2004

225. L.-S. Yan, Y. Wang, B. Zhang, C. Yu, J. McGeehan, L. Paraschis, and A.E. Willner, “1,400 km transmission using a directly modulated DFB Laser and optical sideband filtering in an 8x10 Gb/s WDM system,” Europe Conference on Optical Communication (ECOC) 2004, Paper Mo4.5.7, pp. 1-2, Stockholm, Sweden, September 5-9, 2004

226. C. Yu, L.-S. Yan, T. Luo, Y. Wang, Z. Pan, and A.E. Willner, “Width-tunable optical pulse generation based on four-wave mixing in highly-nonlinear fiber,” Conference on Lasers and Electro-Optics (CLEO) 2004, Paper CTuN4, pp. 1-2, San Francisco, CA, USA, May 16-21, 2004

227. C. Yu, L. Christen, T. Luo, Y. Wang, Z. Pan, L.-S. Yan, and A.E. Willner, “All-optical XOR gate based on Kerr effect in single highly-nonlinear fiber,” Conference on Lasers and Electro-Optics (CLEO) 2004, Paper CFA4, pp. 1-2, San Francisco, CA, USA, May 16-21, 2004

228. Y. Wang, C. Yu, T. Luo, Z. Pan, L.-S. Yan, and A.E. Willner, “Tunable all-optical wavelength conversion and wavelength multicasting using orthogonally-polarized fiber FWM,” Conference on Lasers and Electro-Optics (CLEO) 2004, Paper CFA6, pp. 1-2, San Francisco, CA, USA, May 16-21, 2004

229. L.-S. Yan, Y. Wang, B. Zhang, C. Yu, J. McGeehan, L. Paraschis, and A.E. Willner, “Reach extension in 10-Gb/s directly modulated systems using narrow-band partial optical filtering,” Conference on Lasers and Electro-Optics (CLEO) 2004, Paper CWA18, pp. 1-2, San Francisco, CA, USA, May 16-21, 2004

230. T. Luo, C. Yu, L.-S. Yan, Z. Pan, Y. Wang, Y.W. Song, and A.E. Willner, “Polarization-insensitive single-pump optical parametric amplifier by depolarization of the pump,” Conference on Optical Fiber Communication (OFC) 2004, Paper TuC1, pp. 1-3, Los Angeles, CA, USA, February 22-27, 2004

231. T. Luo, C. Yu, Z. Pan, Y. Wang, Y. Arieli, and A.E. Willner, “Chromatic-dispersion-insensitive DGD monitoring by adding a frequency-shifted carrier along the orthogonal polarization state,” IEEE LEOS Annual Meeting2003, Paper TuA4, pp. 1-2, Tucson, AZ, USA, October 26-30, 2003

232. C. Yu, Y. Wang, T. Luo, Z. Pan, S.M.R. Motaghian Nezam, A.B. Sahin, and A.E. Willner, “Chromatic-dispersion-insensitive PMD monitoring for NRZ data based on clock power measurement using a narrowband FBG notch filter,” Europe Conference on Optical Communication (ECOC) 2003, Paper Tu4.2.3, pp. 1-2, Rimini, Italy, September 21-25, 2003

233. Y. Wang, Z. Pan, C. Yu, T. Luo, A. Sahin, and A.E. Willner, “A multi-wavelength optical source based on supercontinuum generation using phase and intensity modulation at the line-spacing rate,” Europe Conference on Optical Communication (ECOC) 2003, Paper Th3.2.4, pp. 1-2, Rimini, Italy, September 21-25, 2003

234. C. Yu, Z. Pan, Y. Wang, Y.W. Song, D. Gurkan, M.C. Hauer, D. Starodubov, and A.E. Willner, “Polarization-insensitive four-wave mixing wavelength conversion using a fiber Bragg grating and a Faraday rotator mirror,” Conference on Optical Fiber Communication (OFC) 2003, Paper WG2, pp. 1-3, Atlanta, GA, USA, March 23-28, 2003

235. Y. Wang, Z. Pan, A.B. Sahin, L.-S. Yan, C. Yu, and A.E. Willner, “In-line chromatic dispersion monitoring using optically-added phase-modulated in-band tones For 10 Gb/s system,” Conference on Optical Fiber Communication (OFC) 2003, Paper WP3, pp. 1-3, Atlanta, GA, USA, March 23-28, 2003

236. Z. Pan, Y.W. Song, C. Yu, Y. Wang, J. Popelek, H. Li, Y. Li, and A.E. Willner, “Tunable dispersion compensation in a 4´40-Gb/s system using sampled nonlinearly-chirped fiber Bragg gratings (NG-FBGs),” Europe Conference on Optical Communication (ECOC) 2002, Paper 10.3.2, pp. 1-2, Copenhagen, Denmark, September 8-12, 2002

237. Y.W. Song, Z. Pan, C. Yu, Y. Wang, J. Popelek, H. Li, Y. Li, and A.E. Willner, “Error-free tunable dispersion slope compensation for 40-Gb/s WDM Systems using nonchannelized 3^rd-order chirped fiber Bragg gratings,” Europe Conference on Optical Communication (ECOC) 2002, Paper 6.2.1, pp. 1-2, Copenhagen, Denmark, September 8-12, 2002

238. C. Yu, Q. Yu, Z. Pan, A.B. Sahin, and A.E. Willner, “Optical compensation of PMD-induced power fading for single sideband subcarrier-multiplexed Systems,” Conference on Optical Fiber Communication (OFC) 2002, Paper WQ5, pp. 1-3, Anaheim, CA, USA, March 17-22, 2002

239. Z. Pan, Y. Wang, C. Yu, T. Luo, A.B. Sahin, Q. Yu, and A.E. Willner, “Intra-bit polarization diversity modulation for PMD mitigation,” Europe Conference on Optical Communication (ECOC) 2001, Paper We.P.37, pp. 1-2, Amsterdam, Netherlands, September 30-October 4, 2001

240. C. Yu, M.R. Wang, and A.J. Varela, “High-efficiency non-diffracting beam shaping using a diffractive element,” OSA Annual Meeting 1999, Paper TuFF6, pp. 1, San Jose, CA, USA, September 26-October 1, 1999

241. C. Yu, M.R. Wang, and A.J. Varela, “High density non-diffracting beam array for optical interconnection,” OSA Annual Meeting 1999, Paper TuQQ4, pp. 1, San Jose, CA, USA, September 26-October 1, 1999