[1] J. M. H. Elmirghani and H. T. Mouftah, IEEE Commun. Mag. 38, 86 (2000).
[2] S. L. Danielsen, P. B. Hansen, and K. E. Stubkjaer, J. Lightwave Technol. 16, 2095 (1998).
[3] M. Saitoh, B. Ma, and Y. Nakano, IEEE J. Quantum Electron. 36, 984 (2000).
[4] M. W. K. Mak, H. K. Tsang, and K. Chan, IEEE Photon. Technol. Lett. 12, 525 (2000).
[5] J. P. Hemingway and A. L. Steele, IEEE J. Selected Topics in Quantum Electron. 3, 1246 (1997).
[6] J. Yu, P. Jeppesen, and S. N. Knudsen, Electron. Lett. 37, 577 (2001).
[7] L. Wei and J. W. Y. Lit, J. Lightwave Technol. 15, 1405 (1997).
[8] R. Kashyap, Fiber Bragg Gratings (Academic Press, San Diego, 1999), p.229.
[9] G. P. Agrawal, Nonlinear Fiber Optics, 2nd Edition (Academic Press, San Diego, 1995), p.60, p.277.
[10] X. Liu and P. Ye, J. Opt. Commun. 21, 178 (2000).