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CHANGYUAN YU
National
University of Singapore, 4 Engineering Drive 3, Singapore 117576
Tel: 65-6515-3590 Fax: 65-6779-1103
E-mail: eleyc@nus.edu.sg Web:
http://www.ece.nus.edu.sg/stfpage/eleyc
KEY QUALIFICATIONS:
· 12 years of research on photonics, including: diffractive optical devices, 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 (75%), and A*STAR Institute for Infocomm Research (25%) (Assistant professor, 2005-present)
· NEC Labs America (Visiting researcher, 2005)
· Optical Communications Lab, Dept. of Electrical Engineering, University of Southern California (Research and teaching assistant, 2000-2005)
· Electro-Optics and Micro-Devices Lab, Dept. of Electrical and Computer Engineering, University of Miami (Research and teaching assistant, 1997-2000)
RECENT RESEARCH PROJECTS (2006-present)
· The applications of digital signal processing in 100-Gbit/s coherent optical communication systems (PI, 2009~2012)
· Autocorrelator for optical pulses based on measurement of polarization effects (PI, 2007~2010)
· Multi-channel wavelength-tunable short pulses generation in ultra high-speed optical systems (PI, 2006~2009)
· Small-footprint semiconductor optical transmitter for RZ transmission systems (Co-PI, 2008~2011)
· Fabrication and testing of fiber optic hydrophones and arrays (Collaborator, 2007~2009)
· Distributed temperature and strain sensor (Collaborator, 2006~2007)
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)
· Realization and application of 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 high speed 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)
GRANTED RESEARCH PROPOSALS:
· Involved in writing several funding proposals to government agencies and corporations including NSF, DARPA, and CISCO, which have resulted in grants over a million US dollars
TEACHING EXPERINCE:
· Lecture:
Ø EE3407 “Analog Electronics” (AY 2007/2008~present)
Ø ESP1104 “Introduction to Electronic Systems” (AY 2006/2007~present)
· Tutorial:
Ø ESP1104 “Introduction to Electronic Systems” (AY 2006/2007~present)
Ø EE2009 “Signals” (AY 2005/2006~present)
· Lab supervision:
Ø EE2009 “Signals” (AY 2005/2006~ AY2006/2007)
Ø EE3208 “Embedded Computer Systems Design” (Semester II, AY2005/2006)
· Research students supervised:
Ø Currently supervising 4 Ph.D. students (YANG Jing, ZHANG Shaoliang, HU Junhao, ZHANG Hongyu), 1 M.Sc. student (YU Yi), and 1 FYP student (HE Minghui)
Ø Graduated M.Sc. students:
HAN Xue, “Comparison of modulation formats in 42.8-Gbit/s WDM fiber-optic communication systems,” 05/2009
LI Xiaojing, “Pilot-aided maximum likehood phase estimation in optical M-ary phase-shift keying system,” co-supervised with Prof. KAM Pooi Yuen, 12/2008
Ø Graduated FYP students:
CHEE Kang Wei, “PMD Monitoring for High-Speed Optical Communication Systems Based on Power Measurement of RF Tone,” 05/2009
V. M. Ramkumar, “Investigation of Polymer Optical Fiber for High Data Rate and Short Range Communication”, co-supervised with Dr. ZHANG Jing, 05/2008
XING Rui, “Quantum-dots based biosensor project – development of a graphic interface as part of the software package for the urine analysis device”, co-supervised with Dr. ZHOU Xiaoqun, 05/2008
· Oral examination committees:
Ø Examination committee member for Ph.D. student:
Chava Vijaya Saradhi, “Lightpath routing with survivability requirements in WDM optical mesh networks”, 2007
ACTIVITIES:
· Member of Optical Society of America (OSA)
· Member of IEEE Photonics Society (IEEE/PS)
· Committee member of IEEE/PS Singapore Chapter (2007~present)
· Supervisor of the Student Activity Committee (SAC) of IEEE/PS Singapore Chapter (2009~present)
· Co-chair of Working Group 1 (WG1) of the Telecommunications Standards Technical Committee (TSTC) 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)
· Technical program committee member of Asia Communications and Photonics Conference and Exhibition (ACP) 2009
· Technical program committee member of the 8th International Conference on Optical Communications and Networks (ICOCN) 2009
· Co-chair of Symposium P (Fiber Optical Devices and Applications), the 5th International Conference on Materials for Advanced Technologies (ICMAT) 2009
· Technical program committee member and section chair of Opto-Electronics and Communications Conference (OECC) 2009
· Technical program committee member of the 11th IEEE International Conference on Communication Systems (ICCS) 2008
· Organizing committee member and technical program committee member of the 7th International Conference on Optical Communications and Networks (ICOCN) 2008
· Technical program committee member and section chair of Opto-Electronics and Communications Conference (OECC) 2008
· Section chair of the 6th International Conference on Information, Communications and Signal Processing (ICICS) 2007
· Technical program committee member and section chair of the 10th IEEE International Conference on Communication Systems (ICCS) 2006
· Vice president of the Friendship Club of China in University of Miami, 1997-1999
· Reviewer for IEEE Photonics Technology Letters, IEEE/OSA Journal of Lightwave Technology, IEEE Transaction on Communications, IEEE Journal of Selected Topics in Quantum Electronics, Optics Letters, Optics Express, Optics Communications, Optics Engineering, IEE Electronics Letters, Journal of Computer Communications, and a few international conferences
HONORS:
· Best Paper Award, Symposium P (Fiber Optical Devices and Applications), the 5th International Conference on Materials for Advanced Technologies (ICMAT) ’09, Singapore, July 2009
· Selected to Marquis “Who’s Who in the world”, 2009
· Academic Achievement Award, Univ. of Southern California, 2005
· IEEE/LEOS Graduate Student Fellowship Award, 2004 (12 winners from all over the world annually)
· Teaching and Research Assistant Scholarship, Univ. of Southern California, 2000- 2005
· Award of Academic Merit, Graduate School of Univ. of Miami, 1999
· Selected to “Who’s Who Among Students in American Universities and Colleges”, 1999
· Teaching and Research Assistant Scholarship, Univ. of Miami, 1997- 2000
· Outstanding Student Scholarship, Tsinghua Univ., 1992-1996
US PATENT:
· 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 for PMD mitigation,” Issued on November 11, 2003
PUBLICATIONS:
(BOOK CHAPTERS)
1. C. Yu, “Polarization Mode Dispersion Monitoring,” Optical Performance Monitoring Techniques for Next Generation Photonic Networks, Calvin C. K. Chan, editor, Academic Press, Elsevier Inc., in press
2. A.E. Willner, C. Yu, Z. Pan, and Y. Xie, “WDM Fiber Optic Communication Networks,” Handbook of Optics, 3rd Edition, McGraw-Hill, Inc., in press
3. 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
4. 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)
5. S. Zhang, P. Y. Kam, C. Yu, and J. Chen, “Bit-error rate performance of coherent optical M-ary PSK and 16-QAM using decision-aided maximum likelihood phase estimation,” submitted to IEEE Journal on Selected Areas in Communications, 2009
6. S. Zhang, P. Y. Kam, C. Yu, and J. Chen, “Improved decision-aided carrier phase estimation for coherent optical communications,” submitted to IEEE/OSA Journal of Lightwave Technology, 2009
7. J. Yang, J. Hu, C. Yu, Y.K. Yeo, and Y. Wang, “Multi-Channel 80-GHz Pulse Train Generation Based on Optical Parametric Process,” submitted to Optics Communications
8. 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,” accepted by IEEE Photonics Technology Letters
9. 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, pp. 1075-1077, August 2009
10. 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, pp. 1657-1659, June 2009
11. J. Yang, C. Yu, Z. Chen, J. Ng and X. Yang, “Suppression of polarization induced signal fluctuation in optic distributed sensing system based on SBS,” Electronics Letters, vol. 45, pp. 154-156, January 2009
12. 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, pp. 703-715, January 2009
13. 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, pp. 821 - 823, May 2008
14. 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, pp. 3498-3500, December 2007
15. 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, pp. 1754-1760, July 2007
16. 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 a two pump configuration, DCF, and a dispersion compensator,” IEEE Photonics Technology Letters, vol. 19, pp. 861-863, June 2007
17. 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, pp. 42-44, January 2007
18. 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, pp. 20-22, January 2007
19. 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-Gbit/s RZ system by optical parametric amplification in fiber,” IEEE Photonics Technology Letters, vol. 18, pp. 2569-2571, December 2006
20. 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, pp. 1606 - 1608, August 2006
21. 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, pp. 643 - 645, February 2006
22. 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, pp. 430 - 432, January 2006
23. 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, pp. 3558 - 3565, November 2005
24. 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, pp. 3295 - 3301, October 2005
25. 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, pp. 3331 - 3338, October 2005
26. 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, pp. 5106-5115, June 2005
27. L.-S. Yan, C. Yu, Y. Wang, T. Luo, L. Paraschis, and A.E. Willner, “40-Gbit/s transmission over 25-km of negative-dispersion fiber using narrowband filtering of a commercial directly modulated DFB laser,” IEEE Photonics Technology Letters, vol. 17, pp. 1322-1324, June 2005
28. 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, pp. 1232-1234, June 2005
29. 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, pp. 636-638, March 2005
30. 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, pp. 371-375, November 2004
31. 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, pp. 1906 - 1908, August 2004
32. 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 optical clock regeneration techniques,” IEEE/OSA Journal of Lightwave Technology, vol. 22, pp. 1086 - 1093, April 2004
33. 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, pp. 341 –343, January 2004
34. 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, pp. 2239 –2246, December 2002
35. 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, pp. 2259 –2266, December 2002
36. 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, pp. 1466 –1468, October 2002
37. M.R. Wang, C. Yu, and A.J. Varela, “Efficient pseudo-non-diffracting beam shaping using a quasi-continuous phase diffractive element,” Optical Engineering, vol. 40, pp. 517-524, April 2001
38. C. Yu, M.R. Wang, A.J. Varela, and B. Chen, “High-density non-diffracting beam array for optical interconnection,” Optics Communications, vol. 177, pp. 369-376, April 2000
39. X.H. Guang, M.R. Wang, and C. Yu, “A high-efficiency flat-top beam shaper fabricated by a non-lithographic technique,” Optical Engineering, vol. 38, pp. 208-213, February 1999
(CONFERENCE PROCEEDINGS)
40. S. Zhang, J. Chen, C. Yu, W. Rong, and P. Y. Kam, “ADC bandwidth optimization for coherent optical detection in phase-modulated systems,” accepted by Asia Communications and Photonics Conference and Exhibition (ACP) ’09
41. 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,” accepted by Asia Communications and Photonics Conference and Exhibition (ACP) ’09
42. 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) ’09, Paper TuA5, pp. 1-2, Hong Kong, July 2009
43. J. Hu, C. Yu, “An Improved Autocorrelation Technique Based on the Degree-of-Polarization Measurement,” OptoElectronics and Communications Conference (OECC) ’09, Paper ThM4, pp. 1-2, Hong Kong, July 2009
44. 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,” 5th International Conference on Materials for Advanced Technologies (ICMAT) ’09, Paper P-S5.03, pp. 1-3, Singapore, July 2009
45. J. Yang, C. Yu, Z. Chen, J. Ng, and X. Yang, “Polarization Insensitivity Optic Distributed Strain Sensing System Based on Stimulated Brillouin Scattering,” 5th International Conference on Materials for Advanced Technologies (ICMAT) ’09, P-S10.12, pp. 1-3, Singapore, July 2009
46. 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) ’09, Paper CMZ4, pp. 1-2, Baltimore, MD, USA, June 2009
47. 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) ’09, Paper CMZ3, pp. 1-2, Baltimore, MD, USA, June 2009
48. S. Zhang, P.Y. Kam, J. Chen, and C. Yu, “A Comparison of Phase Estimation in Coherent Optical PSK System,” IEEE Photonics Global Conference (IPGC)’08, Paper C3-4A-03, Singapore, December 2008
49. G.J. Pendock, W. Shieh, X. Yi, and C. Yu, “Measuring Dispersion in WDM Links with Modulated Background ASE,” OptoElectronics and Communications Conference (OECC) ’08, Paper WeK-2, pp. 1-2, Sydney, Australia, July 2008
50. 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) ’08, Paper TuA-4, pp. 1-2, Sydney, Australia, July 2008
51. 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) ’08, Paper CthJJ2, pp. 1-2, San Jose, CA, USA, May 2008
52. C. Yu, “Optical short pulse generation and measurement based on fiber polarization effects,” 16th Wireless and Optical Communications Conference (WOCC) ’08, Paper Optical-11, pp. 66, Taichung, Taiwan, ROC, April 2008 (Invited)
53. J. Yang, C. Yu, Z. Chen, J. Ng, and X. Yang, “Suppression of polarization sensitivity in BOTDA fiber distributed sensing system,” International Conference on Optical Fibre Sensors (OFS) ‘08, Proceedings of SPIE, vol. 7004, Paper 700421, pp. 1-4, Perth, Australia, April 2008
54. 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) ’08, Paper JWA29, pp. 1-3, San Diego, CA, USA, February 2008
55. 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,” 6th International Conference on Information, Communications and Signal Processing (ICICS) ’07, Paper P0848, pp. 1-4, Singapore, December 2007
56. 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) ’07, Paper CMJJ7, pp. 1-2, Baltimore, MD, USA, May 2007
57. 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) ’07, Paper JTuA63, pp. 1-2, Baltimore, MD, USA, May 2007
58. 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) ’07, Paper JWA9, pp. 1-3, Anaheim, CA, USA, March 2007
59. C. Yu, “Applications of fiber nonlinearities in high-speed WDM optical communication systems,” 15th Wireless and Optical Communications Conference (WOCC) ’06, Paper PS-4-2, pp. 1, Hangzhou, China, October 2006 (Invited)
60. 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 2006 (Invited)
61. 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) ’06, Paper CFP2, pp. 1-2, Long Beach, CA, USA, May 2006
62. 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) ’06, Paper CMNN4, pp. 1-2, Long Beach, CA, USA, May 2006
63. 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) ’06, Paper CThCC4, pp. 1-2, Long Beach, CA, USA, May 2006
64. 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 ’06, Paper S4.5, pp. 1-4, Princeton, NJ, USA, March 2006
65. 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) ’06, Paper OFP7, pp. 1-3, Anaheim, CA, USA, March 2006
66. 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 2006 (Invited)
67. 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) ’05, Paper Mo4.5.2, pp. 1-2, Glasgow, Scotland, September 2005
68. 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-polarisation,” Europe Conference on Optical Communication (ECOC) ’05, Paper We2.3.3, pp. 1-2, Glasgow, Scotland, September 2005
69. 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) ’05, Paper Th1.3.3, pp. 1-2, Glasgow, Scotland, September 2005
70. 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) ’05, Paper Th3.2.3, pp. 1-2, Glasgow, Scotland, September 2005
71. 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) ’05 , Paper JWB49, pp. 1-2, Baltimore, MD, USA, May 2005
72. 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) ’05 , Paper OTuO1, pp. 1-3, Anaheim, CA, USA, March 2005
73. 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) ’05 , Paper OThR5, pp. 1-3, Anaheim, CA, USA, March 2005
74. 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) ’05, Paper OFH6, pp. 1-3, Anaheim, CA, USA, March 2005
75. 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) ’05, Paper OThT4, pp. 1-3, Anaheim, CA, USA, March 2005
76. 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 ’04, Paper D2, pp. 1, Charlotte, NC, USA, November 2004 (Invited)
77. 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) ’04, Paper We.4.P.125, pp. 1-2, Stockholm, Sweden, September 2004
78. 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) ’04, Paper Mo4.5.7, pp. 1-2, Stockholm, Sweden, September 2004
79. 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) ’04, Paper CTuN4, pp. 1-2, San Francisco, CA, USA, May 2004
80. 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) ’04, Paper CFA4, pp. 1-2, San Francisco, CA, USA, May 2004
81. 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) ’04, Paper CFA6, pp. 1-2, San Francisco, CA, USA, May 2004
82. 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) ’04, Paper CWA18, pp. 1-2, San Francisco, CA, USA, May 2004
83. 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) ’04, Paper TuC1, pp. 1-3, Los Angeles, CA, USA, February 2004
84. 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 Meeting’03, Paper TuA4, pp. 1-2, Tucson, AZ, USA, October 2003
85. 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) ’03, Paper Tu4.2.3, pp. 1-2, Rimini, Italy, September 2003
86. 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) ’03, Paper Th3.2.4, pp. 1-2, Rimini, Italy, September 2003
87. 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) ’03, Paper WG2, pp. 1-3, Atlanta, GA, USA, March 2003
88. 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) ’03, Paper WP3, pp. 1-3, Atlanta, GA, USA, March 2003
89. 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) ’02, Paper 10.3.2, pp. 1-2, Copenhagen, Denmark, September 2002
90. 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 3rd-order chirped fiber Bragg gratings,” Europe Conference on Optical Communication (ECOC) ’02, Paper 6.2.1, pp. 1-2, Copenhagen, Denmark, September 2002
91. 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) ’02, Paper WQ5, pp. 1-3, Anaheim, CA, USA, March 2002
92. 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) ’01, Paper We.P.37, pp. 1-2, Amsterdam, Netherlands, September 2001
93. C. Yu, M.R. Wang, and A.J. Varela, “High-efficiency non-diffracting beam shaping using a diffractive element,” OSA Annual Meeting’99, Paper TuFF6, pp. 1, San Jose, CA, USA, September 1999
94. C. Yu, M.R. Wang, and A.J. Varela, “High density non-diffracting beam array for optical interconnection,” OSA Annual Meeting’99, Paper TuQQ4, pp. 1, San Jose, CA, USA, September 1999