[1] S. M. Zhang, F. Y. Lu, W. C. Xu, and J. Wang, Opt. Fiber Technol. 11, 193 (2005).

[2] J. A. Bolger, P. F. Hu, J. T. Mok, J. L. Blows, and B. J. Eggleton, Opt. Commun. 249, 431 (2005).

[3] M. H. Yuan and L. Chen, Opt. Rev. 17, 371 (2010).

[4] J. Herrera, F. Ramos, and J. Marti, IEEE Photon. Technol. Lett. 17, 2370 (2005).

[5] J. D. Reis and A. L. Teixeira, Microw. Opt. Technol. Lett. 53, 633 (2011).

[6] H. B. Song and M. Brandt-Pearce, J. Lightwave Technol. 30, 713 (2012).

[7] M. Deng, X. Yi, J. Zhang, H. Zhang, and K. Qiu, Chin. Opt. Lett. 10, 110602 (2012).

[8] A. Argyris, E. Grivas, and A. Bogris, J. Lightwave Technol. 28, 3107 (2010).

[9] E. Tipsuwannakul, M. N. Chughtai, and M. Forzati, Opt. Express 18, 24178 (2010).

[10] M. Faisal and A. Maruta, Opt. Commun. 283, 1899 (2010).

[11] H. Kim, J. H. Lee,H. and C. Ji, Opt. Express 16, 20687 (2008).

[12] L. G. L. Wegener, M. L. Povinelli, A. G. Green, P. P. Mitra, J. B. Stark, and P. B. Littlewood, Phys. D 189, 81 (2004).

[13] Q. M. Nguyen and A. Peleg, Opt. Commun. 283, 3500 (2010).

[14] H. Zhou, K. Qiu, and F. Tian, Chin. Opt. Lett. 10, 050601 (2012)

[15] G. Bellotti and S. Bigo, IEEE Photon. Technol. Lett. 12, 726 (2000).

[16] X. Ma and C. Gan, Chin. Opt. Lett. 9, 040602 (2011)

[17] Y. Bu and X. Wang, Acta Phys. Sin. (in Chinese) 54, 4747 (2005).

[18] S. Pitois and G. Millot, Opt. Commun. 226, 415 (2003).

[19] G. P. Agrawal, Nonlinear Fiber Optics (Academic Press, San Diego, 2001).