[1] [1] B. Sévigny, O. Vanvincq, C. Valentin, N. Chen, Y. Quiquempois, and G. Bouwmans, Opt. Express 21, 30859 (2013).

[2] [2] J. Zheng, Y. Yu, C. Du, P. Yan, M. Pan, J. Wang, and Z. Liu, Chin. Opt. Lett. 10, S20611 (2012).

[3] [3] W. Liang, N. Liu, Z. Li, and P. Lu, Chin. Opt. Lett. 11, S20604 (2013).

[4] [4] J. Zhao, J. Hou, C. Yang, Z. Zhong, Y. Gao and S. Chen, Chin. Opt. Lett. 12, S10607 (2014).

[5] [5] Z. Holdynski, M. Napierala, M. Szymanski, M. Murawski, P. Mergo, P. Marc, L. R. Jaroszewicz, and T. Nasilowski, Opt. Express 21, 7107 (2013).

[6] [6] J. Hou, J. J. Zhao, C. Y. Yang, Z. Y. Zhong, Y. H. Gao, and S. P. Chen, Photon. Res. 2, 59 (2014).

[7] [7] L. Zheng, X. Zhang, X. Ren, H. Ma, L. Shi, Y. Wang, and Y. Huang, Chin. Opt. Lett. 9, 040601 (2011).

[8] [8] K. Saitoh and M. Koshiba, Opt. Express 12, 2027 (2004).

[9] [9] T. Sun, G. Kai, Z. Wang, S. Yuan, and X. Dong, Chin. Opt. Lett. 6, 93 (2008).

[10] [10] M. A. Ettabib, L. Jones, J. Kakande, R. Slavík, F. Parmigiani, X. Feng, F. Poletti, G. M. Ponzo, J. D. Shi, M. N. Petrovich, W. H. Loh, P. Petropoulos, and D. J. Richardson, Opt. Express 20, 1629 (2012).

[11] [11] W. Q. Gao, M. E. Amraoui, M. S. Liao, H. Kawashima, Z. C. Duan, D. H. Deng, T. L. Cheng, T. Suzuki, Y. Messaddeq, and Y. Ohishi, Opt. Express 21, 9573 (2013).

[12] [12] H. H. Cheng, Z. Q. Luo, C. C. Ye, Y. Z. Huang, C. Liu, and Z. P. Cai, Appl. Opt. 52, 525 (2013).

[13] [13] T. Hasegawa, Opt. Commun. 285, 3939 (2012).

[14] [14] C. Jin, L. Rao, J. H. Yuan, X. W. Shen, and C. X. Yu, Optoelec-tron. Lett. 7, 194 (2011).

[15] [15] T. Hasegawa and S. Ohara, in Proceedings of Optical Fiber -Communication Conference and National Fiber Optic Engineers Conference OThK2 (2009).

[16] [16] M. Chen and S. Xie, Opt. Commun. 281, 2073 (2008).

[17] [17] K. P. Hansen, Opt. Express 11, 1503 (2003).

[18] [18] J. F. Liao, J. Q. Sun, Y. Qin, and M. D. Du, Opt. Fiber Technol. 19, 468 (2013).

[19] [19] J. F. Liao, J. Q. Sun, M. D. Du, and Y. Qin, IEEE Photon. Technol. Lett. 26, 1041 (2014).

[20] [20] G. Agrawal, Nonlinear Fiber Optics (Academic Press, 1995).

[21] [21] T. Hasegawa, T. Nagashima, and N. Sugimoto, Opt. Commun. 281, 782 (2008).

[22] [22] D. Gloge, Appl. Opt. 10, 2442 (1971).