PUBLICATIONS

A. Photonics Sensors

1. Yu, J.M., Tao, X.M., and Tam, H.Y., “Fabrication of UV sensitive single-mode polymeric optical fiber”, Optical Materials, accepted for publication (2005).

2. Bai-Ou Guan and Hwa-Yaw Tam, Sien-Ting Lau and Helen L. W. Chan, “Ultrasonic Hydrophone Based on Fiber Distributed Bragg Reflector Laser,” IEEE Photonic Technology Letters, Vol.17, No.1, January 2005, pp 169-171.

3. Yang D. X., Yu J. M., Tao X. M., and Tam H. Y., “ Structural and mechanical properties of polymeric optical fiber,” Materials Science and Engineering A – Structural Materials Properties Microstructure and Processing, Vol. 364 (1-2), 15 January 2004, pp.256-259.

4. Yu JM, Tao XM, Tam HY, “Trans-4-stilbenemethanol-doped photosensitive polymer fibers and gratings”, Optics Letters, Vol. 29, No. 2, 15 January 2004, pp. 156-158.

5. Guan B. O., Tam H. Y. and Liu S. Y., “Temperature-Independent Fiber Bragg Grating Tilt Sensor,” IEEE Photonic Technology Letters, Vol.16, No.1, Jan 2004, pp.224-226.

6. Zhang AP, Tao XM, Tam HY, “Effects of microstructures of smart fiber composites on embedded fiber Bragg grating sensors”, Journal of Reinforced Plastics and Composites, Vol. 22, No. 14, 2003, pp. 1319-1329.

7. Zhang, A.P., Tam, H.Y., and Tao, X.M., “Mode re-coupling in novel Bragg grating pair,” Optics Letters, Vol. 28, No.7, pp. 519-521, April 2003.

8. Zhang, A.P., Tao, X.M., Guan, Chung, W.H., B.O., and Tam, H.Y., “Cladding mode assisted recouplings in concatenated long-period and fiber Bragg gratings,” Optics Letters, Vol. 27, No.14, pp. 1214-1216, July 15, 2002.

9. Zhang, A.P., Guan B. O., Tao, X.M., and Tam, H.Y., “Experimental and theoretical analysis of fiber Bragg gratings under lateral compression,” Optics Communications, Vol. 206, No.1-3, 15 May 2002, pp.81-87.

10. Bai-Ou Guan, Hwa-Yaw Tam, Helen L. W. Chan, Chung-Loong Choy, and Muhtesem Suleyman Demokan, “Discrimination between strain and temperature with a single fiber Bragg grating”, Microwave and Optical Technology Letters, vol.33 , no.3 ,5 May 2002, pp.200-202.

11. Bai-Ou Guan, A-Ping Zhang, Hwa-Yaw Tam, Helen L. W. Chan, Chung-Loong Choy Xiao-Ming Tao, and Muhtesem M.S., “Step-change long-period gratings,” IEEE Photonic Technology Letters, vol.14, no.5, May 2002, pp. 657-659.

12. Dong X.Y., Guan B.O., Yuan S.Z., Dong X. Y., and Tam H.Y., “Strain gradient chirp of uniform fiber Bragg grating without shift of central Bragg wavelength,” Optics Communications, vol.202, pp.91-95, 1 February 2002.

13. Zhang, A.P., Guan, B.O., Tao, X.M., and Tam, H.Y., “Mode coupling in superstructure fiber Bragg grating,” IEEE Photonic Technology Letters, Vol.14, No.4, pp. 489-491, April 2002.

14. Guan B.O., Tam H.Y., Chan, H.L.W., Choy, C.L. and Demokan M.S., “Growth characteristics of long-period gratings in hydrogen-loaded fiber during and after 193nm UV inscription,” Measurement Science and Technology, Vol.12, July 2001, pp.818-823.

15. Youlong Yu, Luenfu Lui, Hwayaw Tam and Wenghong Chung, “Fiber laser-based wavelength-division multiplexed fiber Bragg grating sensor system,” IEEE Photonic Technology Letters, Vol.13, No.7, July 2001, pp. 702-704.

16. Guan Baiou, Tam Hwayaw, Lu Chao and Dong Xiaoyi “Postfabrication Wavelength Trimming of FBGs Written in H2-loaded Fibers,” IEEE Photonic Technology Letters, Vol.13, No.6, pp. 591-593, June 2001.

17. Zhang, A.P., Tao, X.M., and Tam, H.Y.: “Prediction of polarization behaviour of twisted optical fibres containing Bragg grating sensors”, Journal of Textile Institute, Vol.91, 2000, pp.105-116.

18. Guan B.O., Tam H.Y., Tao X.M., and Dong X.Y., “Highly Stable Fibre Bragg Gratings written in Hydrogen-loaded Fibre,” IEEE Photonic Technology Letters, Vol.12, No.10, pp. 1349-1351, October 2000.

19. Yu Y. L., Tam H.Y., Chung W.H., and Demokan M.S., “Fiber Bragg grating sensor for simultaneous measurement of displacement and temperature,” Optics Letters, Vol. 25, No.16, pp. 1141-1143, August 2000.

20. Guan, B.O., Tam, H. Y., Ho, S. L., Michael Liu, S. Y., and Dong X.Y., “Simultaneous Strain and Temperature Measurement Using a Single Fiber Bragg Grating”, Electronic Letters, vol. 36, No. 12, pp. 1018- 1019, June 2000.

21. Guan B.O., Tam H.Y., Tao X.M., and Dong X.Y., “Simultaneous Strain & Temperature Measurement using a Superstructure Fiber Bragg Grating,” IEEE Photonic Technology Letters, Vol.12, No.6, pp. 675-677, June 2000.

22. Guan B.O., Tam H.Y., Ho S.L., and Dong X.Y., “Growth of Long-Period Gratings in H2-Loaded Fiber after 193nm UV Inscription,” IEEE Photonic Technology Letters, Vol.12, No.6, pp. 642-644, June 2000.

23. Liu S.Y., Man W. S., Tam H.Y., Guan B. O., and Demokan M.S., “Long-period grating fabrication using plano-convex microlens array,” IEICE Trans. On Electronics: Special Issue on Fiber Sensors, Vol. E83-C, No. 3, Mar 2000, pp.444- 447.

24. Yu, Y.L., Tam, H.Y., Geng, Liu, Z.G., Chung, W.H., and Demokan, M.S.,: “Passive compensation technique for fibre Bragg grating displacement sensor,” Electronics Letters, Vol. 35, No.25, pp. 2224-2226, December 1999.

25. Yu, Y.L., Tam, H.Y., Geng, S.W., Demokan, M.S., Liu, Z.G., and Chung, W.H.,: “Chirp-free tuning of fiber Bragg grating using a cantilevel beam,” Japanese Journal of Applied Physics, Part 2, No. 9A/B, 15 September 1999.

26. Guan B.O., Guo Z.Y., Liu Z.G., Dong X.Y., Tam H.Y., “High Temperature Sensitive Fiber Bragg Grating with Polymer Jacket”, (in English), Chinese Journal of Lasers, Vol. B8, No.5, pp.412-414, October 1999.

27. Du W.C., Tao, X.M, and Tam, H.Y.: “Temperature Independent Strain Measurement with a Fiber Grating Tapered Cavity Sensor,” IEEE Photonic Technology Letters, Vol.11, No.5, pp. 596-598, May 1999.

28. Du W.C., Tao, X.M, and Tam, H.Y.: “Fibre Bragg Grating Cavity Sensor for Simultaneous Measurement of Strain and Temperature,” IEEE Photonic Technology Letters, Vol.11, No.1, pp. 105-107, January 1999.

29. Liu S.Y., Tam H.Y., and Demokan M.S., “Low-cost miocrolens array for long-period grating fabrication,” Electronics Letters, Vol. 35, No.1, pp.79-81, 15th January 1999.

30. Du W.C., Tao, X.M, Tam, H.Y., and Choy, C. L., “Fundamentals and applications of optical fiber Bragg gratings sensors to textile structural composites,” Journal of Composite Structures, vol. 42, No.3, pp.217-229, July 1998.

31. Chan, M.F., Chen, G. S., Demokan M. S., and Tam, H. Y.: “Optimal sensing of current based on an extrinsic Sagnac interferometer configuration,” Optic and Lasers in Engineering, vol. 30, January 1998, pp. 17-24.

32. Ko, K. Y., Demokan, M.S. and Tam, H. Y., “Distributed Temperture Sensing with Erbium-Doped Fiber Amplifiers,” Journal of Lightwave Technology, pp.2236-2245, October 1996.

B. Optical Fibre Communications

1. P. K. A. Wai, Lixin Xu, L. F. K. Lui, L. Y. Chan, C. C. Lee, H. Y. Tam, and M. S. Demokam, “All-optical add-drop node for optical packet-switched networks,” Optics Letters, accepted for publication (2005).

2. L. F. K. Lui, P. K. A. Wai, Lixin Xu, H.Y. Tam, and M.S. Demokan, “1x4 All-Optical Packet Switch at 10 Gb/s,” accepted and to be published in Photonics Technology Letters (2005).

3. P. K. A. Wai, Lixin Xu, L. F. K. Lui, C. Y. Li, L. Y. Chan, and H. Y. Tam, “A Minimalist Approach to All-optical packet switching,” Optical Society of America: Optics and Photonics News, March 2005, pp. 34- 39.

4. L. Y. Chan, P. K. A. Wai, L. F. K. Lui , Lixin Xu, H. Y. Tam and M. S. Demokan, “All-Optical Header Processing by Using an Injection Locked Fabry-Perot Laser Diode,” Microwave and Optical Technology Letters, Vol. 44, No. 4, February 20, 2005, pp.342 - 345.

5. Heliang Liu, Hwayaw Tam, P.K.A. Wai, and Edwin Pun, “Low-loss Waveguide Crossing Using a Multimode Interference Structure,” Optics Communications, Vol. 241 (1-3), 1 November 2004, pp.99-104.

6. P. K. A. Wai, L. Y. Chan, L. F. K. Lui, Lixin Xu, H. Y. Tam, and M. S. Demokan, “All-Optical Header Processing using Control Signals Generated by Direct Modulation of a DFB Laser,” Optics Communications, Vol. 242 (1-3), August 2004, pp.155-161.

7. Lixin Xu, W. H. Chung, L.Y. Chan, L.F.K. Lui, P. K. A. Wai, and H.Y. Tam, “Simultaneous All-Optical Waveform Reshaping of Two 10 Gb/s Signals Using Injection Locking In a Fabry-Perot Laser Diode” IEEE Photonic Technology Letters, Vol.16, No.6, June 2004, pp 1537-1539.

8. C.-L. Zhao, H.-Y. Tam, B.-O. Guan, Xinyong Dong, P. K. A. Wai, Xiaoyi Dong, “Optical automatic gain control of EDFA using two oscillating lasers in a single feedback loop”, Optics Communications, vol. 225, no. 1-3, pp. 157-162, 15 September 2003.

9. C.-L. Zhao, B.-O. Guan, H.-Y. Tam, W.-H Chung, Xinyong Dong, P. K. A. Wai, Xiaoyi Dong, “Performance of optical automatic gain control EDFA with dual-oscillating control lasers,” Optics Communications, vol. 224, no. 4-6, pp. 281-287, 1 September 2003.

10. L.Y. Chan, K. Lui, W.H. Chung, P.K.A. Wai, B. Moses, H.Y. Tam, and M.S. Demokan, “Demonstration of an all-optical switch using a multi-wavelength mutual injection-locked laser diode,” Optics Letters, Vol.28, No.10, pp.837-839, 15 May 2003.

11. L.Y. Chan, K.K. Qureshi, K. Lui, P.K.A. Wai, B. Moses, H.Y. Tam, and M.S. Demokan, “All-optical Bit-error monitoring system using cascaded inverted wavelength converter and optical NOR gate,” IEEE Photonic Technology Letters, Vol.15, No.4, pp.593-595, Apr 2003.

12. L.Y. Chan, W.H. Chung, P.K.A. Wai, B. Moses, H.Y. Tam, and M.S. Demokan, “Simultaneous Re-polarization of two 10 Gb/s polarization-scrambled wavelength channels using a mutual-injection-locked laser diode,” IEEE Photonic Technology Letters, Vol.14, No.12, pp.1740-1742, Dec 2002.

13. W. H. Chung, H. Y. Tam, M. S. Demokan, P. K. A. Wai and C. Lu, “Wavelength and power monitoring of DWDM systems using scanning F-P filter calibrated by a F-P laser,” Optics Communications, Vol. 210 (3-6), pp. 219-224, 15 September 2002.

14. L.Y. Chan, W.H. Chung, P.K.A. Wai, H.Y. Tam and M.S. Demokan, “All-optical stabilization of the state of polarization of a high speed pulse train using an injection-locked laser diode,” Electronics Letters, Vol. 38, No. 19, pp.1116-1118, 12th September 2002.

15. Chung W.H., Chan L.Y., Tam H.Y., Wai P.K.A., and Demokan M.S., “Output polarization control of fiber DFB laser using injection locking,” IEEE Photonic Technology Letters, Vol. 14, No. 7, pp. 920-922, July 2002.

16. Kwan, Y.H.C., Wai, P.K.A., and Tam, H.Y.: “Impact of group delay ripples on dispersion-managed soliton systems with chirped fiber gratings,” Optics Letters, Vol. 26, No.13, July 2001, pp.959-961.

17. Man, W. S., Tam, H. Y and Demokan, M S., “Optimal loop length of a nonlinear optical loop mirror in switching solitons”, Journal of Lightwave Technology, pp.100-105, January 1998.

18. Man, W. S., Tam, H. Y. and Demokan M.S., “The effects of pulsewidth, wavelength detuning and timing jitter on the switching efficiency of nonlinear optical loop mirror in switching solitons”, International Journal of Optoelectronics, Vol. 11, No. 6, pp. 405-411, Nov 1997.

19. Man, W. S., Demokan, M.S. and Tam, H. Y., “Controlled Switching of Solitons in Fiber Nonlinear Directional Couplers”, Journal of Lightwave Technology, pp.2793-2798, December 1996.

20. Zhao Y., (Wang J.S., Zhou W.), Tam H.Y. and Demokan M.S., “Statistical Analysis of Raman Crosstalk in Multichannel Wavelength Division Multiplexed Systems,” Microwave and Optical Techonology Letters, pp.111-115, 5th June 1996.

C. Optical Fibre Amplifiers & Lasers

1. K.K. Qureshi, H. Y. Tam, and P. K. A. Wai, “Multiwavelength Laser Source using Linear Optical Amplifier," accepted and to be published in Photonics Technology Letters. August 2005.

2. H. L. Liu, H. Y. Tam, W. H. Chung, P. K. A. Wai, and N. Sugimoto, “Wavelength-Switchable La-codoped Bismuth-based Erbium-doped Fiber Ring Laser," Photonics Technology Letters. Vol. 17, No. 5, May 2005, pp. 986 -988.

3. X.Y. Dong, P Shum, N.Q. Ngo, H.Y. Tam, and X.Y. Dong, “Output power characteristics of tunable erbium-doped fiber ring lasers,” Journal of Lightwave Technology, Vol. 23, Issue. 3, March 2005, pp.1334 – 1341.

4. H. L. Liu, H. Y. Tam, W. H. Chung, P. K. A. Wai, and N. Sugimoto, “La-codoped Bismuth-based Erbium-doped Fiber Ring laser with 106-nm Tuning Range," Photonics Technology Letters. Vol. 17, No. 2, February 2005, pp. 297 - 299.

5. A. Ping Zhang, Xue-Wen Chen, Zu-Guang Guan, Sailing He, Hwa-Yaw Tam, and Weng-Hong Chung, "Optimization of Step-Changed Long-Period Gratings for Gain-Flattening of EDFAs,” IEEE Photonic Technology Letters, Vol.17, No.1, January 2005, pp 121-123.

6. B. Zhao, D.Y. Tang, L.M. Zhao, P. Shum, and H.Y. Tam, “Pulse-train nonuniformity in a fibre soliton ring laser mode-locked by using the nonlinear polarization rotation technique,” Physical Review A, No. 69, Article 043808 –1 to 043808-7, 8 April 2004.

7. B. Zhao, D. Y. Tang, P. Shum, X. Guo, C. Lu, and H. Y. Tam, “Bound twin-pulse solitons in fiber ring laser”, Phys. Rev. E, 70, Art. No. 067602, November 2004.

8. Y. D. Gong, P. Shum, D. Y. Tang, C. Lu, X. Guo, V. Paulose, W. S. Man and H. Y. Tam, “Regimes of operation states in passively mode-locked fiber soliton ring laser,” Optics & Laser Technology, Vol. 36, Issue 4, June 2004, pp. 299-307.

9. X.Y. Dong, N.Q. Ngo, P Shum, B.O. Guan, H.Y. Tam, and X.Y. Dong, “Concentration-induced nonuniform power in tunable erbium-doped fiber lasers,” Optics Letters, vol. 29, No.4, Feb 2004, pp.358-361.

10. Zhao B, Tang DY, Shum P, Man WS, Tam HY, Gong YD, Lu C, “Passive harmonic mode locking of twin-pulse solitons in an erbium-doped fiber ring laser”, Optics Communications, Vol. 229 (1-6), 2 January 2004, pp.363-370.

11. B.O. Guan, H.Y. Tam, S.Y. Liu, P.K.A. Wai and N. Sugimoto, “Ultra-Wideband La co-doped Bi2O3-based EDFA for L-band DWDM Systems,” IEEE Photonic Technology Letters, Vol.15, No.11, pp 1525-1527, Nov 2003.

12. Zhao B, Tang DY, Shum P, Gong YD, Lu C, Man WS, Tam HY “Energy quantization of twin-pulse solitons in a passively mode-locked fiber ring laser”, Applied Physics B – Lasers and Optics, 77 (6-7), pp. 585-588, November 2003.

13. D. Y. Tang, B. Zhao, D. Y. Shen, C. Lu, W. S. Man and H. Y. Tam, “Compound pulse solitons in a fiber ring laser”, Phys. Rev. A, 68(1), Art. No. 013816, July 2003.

14. B. Zhao, D. Y. Tang, P. Shum, C. Lu, W. S. Man and H. Y. Tam, “Twin-pulse soliton operation of a passively mode-locked fiber ring laser”, Advanced Solid-State Photonics (ASSP) Proceedings, (Optical Society of American, Washington DC, John J. Zayhowski, ed.), vol. 83, pp. 327-332, Dec 2003.

15. Xinyong Dong, P. Shum, N. Q. Ngo, C. C. Chan, B.-O. Guan, H.-Y. Tam, “Effects of active fiber length on tunability of erbium-doped fiber ring lasers,” Optics Express, Vol. 11, No. 26, 29 December 2003, pp.3622-3627.

16. Zhao B, Tang DY, and Tam HY, “Experimental observation of FPU recurrence in a fiber ring laser”, Optics Express, Vol. 11, No. 24, 1 December 2003, pp. 3304-3309.

17. Gong YD, Shum P, Tang DY, Lu C, Cheng TH, Qi ZW, Guan YL, Lai WJ, Man WS, Tam HY, “Bound solitons with 103-fs pulse width and 585.5-fs separation from Di-nolm figure-8 fiber laser”, Microwave and Optical Technology Letter, Vol. 39, No. 2, 20 October 2003, pp. 163-164.

18. X.Y. Dong, H.Y. Tam, B.O. Guan, C.L. Zhao, and X.Y. Dong, “High power erbium-doped fiber laser with widely tunable range over 100 nm,” Optics Communications, vol. 224, no. 4-6, pp. 295-299, 1 September 2003.

19. X.Y. Dong, N.Q. Ngo, P. Shum, H.Y. Tam, and X.Y. Dong, “Linear cavity erbium-doped fiber laser with over 100 nm tuning range,” Optics Express, Vol. 11(14), pp.1689-1694, 2003.

20. Gong Y.D., Shum P., Tang D.Y., Lu C., Qi Z.W., Lai W.J., Man W.S., Tam H.Y., “Close spaced ultra-short bound solitons from DI-NOLM figure-8 fiber laser,” Optics Communications, Vol. 220 (4-6), pp. 297-302, 15 March 2003.

21. Gong Y.D., Tang D.Y., Shum P., Lu C., Cheng T.H., Man W.S., and Tam H.Y., “Mechanism of bound soliton pulse formation in a passively mode locked fiber ring laser,” Optical Engineering, vol. 41, No. 11, pp.2778-2782, November 2002.

22. D. Y. Tang, B. Zhao, D.Y. Shen, C. Lu, W. S. Man, and H. Y. Tam, “Bound-soliton fiber laser,” Physical Review A, Vol.66, pp.033806, 16 September 2002.

23. Huang W.C., Wai P.K.A., Tam H.Y., Dong X.Y., Ming H., and Xie J.P, “One-stage ASE source with 80 nm bandwidth and low ripples,” <em style="mso-bidi-font-style