[1] [1] K. C. Lee and V. O. K. Li, J. Lightwave Technol. 11, 962 (1993).

[2] [2] G. Kramer and G. Pesavento, Commun. Mag. 40, 66 (2002).

[3] [3] A. Saleh and J. Simmons, J. Lightwave Technol. 24, 3303 (2006).

[4] [4] F. Blouin, A. Lee, A. Lee, and M. Beshai, J. Opt. Networking 1, 56 (2002).

[5] [5] T. EI-Bawab and J. Shin, IEEE Commun. Mag. 40, 60 (2002).

[6] [6] A. Banerjee, Y. Park, F. Clarke, H Song, S. Yang, G. Kramer, K. Kim, and B. Mukherjee, J. Opt. Networking 4, 737 (2005).

[7] [7] F. Wang, Y. Yu, X. Huang, and X. Zhang, Photon. Technol. Lett. 21, 1109 (2009).

[8] [8] E. Wong, J. Lightwave Technol. 30, 597 (2009).

[9] [9] Y. Zhan, M. Zhang, M. Liu, L. Liu, and X. Chen, Chin. Opt. Lett. 11, 030604 (2013).

[10] [10] L. Liu, M. Zhang, M. Liu, and X. Zhang, Chin. Opt. Lett. 10, 070608 (2012).

[11] [11] S. Watanabe, R. Okabe, F. Futami, R. Hainberger, C. Schumidt-Langhorst, C. Schubert, and H. G. Weber, in Proceedings of 30th European Conference on Optical Communication Th4.1.6 (2004).

[12] [12] F. Gomez-Agis, C. M. Okonkwo, A. Albores-Mejia, E. Tangdiongga, and H. J. S. Dorren, Electron. Lett. 46, 1008 (2010).

[13] [13] H. Ji, P. Minhao, G. Michael, K. O. Leif, Y. Kresten, M. H. Jorn, and J. Palle, J. Lightwave Technol. 29, 426 (2011).

[14] [14] E. Tangdiongga, Y. Liu, H. de Waardt, G. D. Khoe, A. M. J. Koonen, and H. J. S. Dorren, Opt. Lett. 32, 835 (2007).

[15] [15] S. Nakamura, Y. Ueno, and K. Tajima, in Proceedings of Optical Fiber Communication Conference FD, FD3 (2002).

[16] [16] T. Hirooka, M. Okazaki, T. Hirano, P. Guan, M. Nakazawa, and S. Nakamura, IEEE Photon. Technol. Lett. 21, 1574 (2009).

[17] [17] S. L. Jansen, M. Heid, S. Spalter, E. Meissner, C. J. Weiske, A. Schopfilin, and H. Waardt, Electron. Lett. 38, 978 (2002).

[18] [18] Z. Hui, J. Zhang, J. Gong, M. Liang, M. Zhang, Y. Yang, F. He, and J. Liu, Opt. Eng. 52, 055002 (2013).

[19] [19] Z. Hui and J. Zhang, J. Opt. 14, 065402 (2012).

[20] [20] S. Bigo, E. Desurvire, and B. Dersuelle, Electron. Lett. 30, 1868 (1994).

[21] [21] S. H. Lee, K. K. Chow, and C. Shu, Opt. Express 13, 1710 (2005).

[22] [22] X. Lei, B. C. Wang, V. Baby, I. Glesk, and P. R. Prucnal, IEEE Photon. Technol. Lett. 15, 308 (2003).

[23] [23] C. W. Chow, C. S. Wong, and H. K. Tsang, Opt. Commun. 223, 309 (2003).

[24] [24] X. Zhang, Y. Yu, H. Dexiu, L. Lijun, and F. Wei, IEEE Photon. Technol. Lett. 19, 1027 (2007).

[25] [25] Y. Zhang, E. Xu, D. Huang, and X. Zhang, IEEE Photon. Technol. Lett. 21, 1202 (2009).

[26] [26] Y. Xie, J. Zhang, and W. Wang, J. Mod. Opt. 55, 3021 (2008).