[1] D. Cotter, R. J. Manning, K. J. Blow, A. D. Ellis, A. E. Kelly, D. Nesset, I. D. Phillips, A. J. Poustie, and D. C. Rogers, Science 286, 1523 (1999).
[2] R. P. Webb, X. Yang, R. J. Manning, G. D. Maxwell, A. Poustie, S .Lardenois, and D. Cotter, J. Lightwave Technol. 27, 2240 (2009).
[3] G. P. Agrawal, Fiber-Optic Communication Systems (Wiley, New York, 2002).
[4] J. Wang, J. Sun, Q. Sun, D. Wang, X. Zhang, D. Huang, and M. M. Fejer, IEEE Photon. Technol. Lett. 20, 211 (2008).
[5] P. Andalib and N. Granpayeh, J. Opt. Soc. Am. B 26, 10 (2009).
[6] H. Dong, Q. Wang, G. Zhu, J. Jaques, A. Piccirilli, and N. Dutta, Opt. Commun. 242, 479 (2004).
[7] Y. L. Lee, B.-A. Yu, T. J. Eom, W. Shin, C. Jung, Y.-C. Noh, J. Lee, D.-K. Ko, and K. Oh, Opt. Express 14, 2776 (2006).
[8] B. Nakarmi, M. Rakib-Uddin, T. Q. Hoai, and Y. H. Won, IEEE Photon. Technol. Lett. 23, 236 (2011).
[9] J. Xu, X. L. Zhang, Y. Zhang, J. J. Dong, D. M. Liu, and D. X. Huang , J. Lightwave Technol. 27, 5268 (2009).
[10] J. Wang, Q. Z. Sun, and J. Q. Sun, Opt. Express 17, 12555 (2009).
[11] Y. X. Zhang, Y. P. Chen, and X. F. Chen, Appl. Phys. Lett. 99, 161117 (2011).
[12] T. A. Ibrahim, R. Grover, L.-C. Kuo, S. Kanakaraju, L. C. Calhoun, and P.-T. Ho, IEEE Photon. Technol. Lett. 15, 1422 (2003).
[13] L. Yi, W. Hu, H. He, Y. Dong, Y. Jin, and W. Sun, Chin. Opt. Lett. 9, 030603 (2011).
[14] J. H. Kim, Y. T. Byun, Y. M. Jhon, S. Lee, D. H. Woo, and S. H. Kim, Opt. Commun. 218, 345 (2003).
[15] J. Zhang, Y. Chen, F. Lu, W. Lu, W. Dang, X. Chen, and Y. Xia, Appl. Opt. 46, 7792 (2007).
[16] J. F. Zhang, Y. P. Chen, F. Lu, and X. F. Chen, Opt. Express 16, 6957 (2008).
[17] M. J. Gong, Y. P. Chen, F. Lu, and X. F. Chen, Opt. Lett. 35, 2672 (2010).
[18] J. Xie, Y. Chen, W. Lu, and X. Chen, Chin. Opt. Lett. 9, 041902 (2011).
[19] X. L. Zeng, X. F. Chen, Y. P. Chen, Y. X. Xia, and Y. L. Chen, Opt. Laser Technol. 35, 187 (2003).
[20] T. Suhara and M. Fujimura, Waveguide Nonlinear-Optic Devices (Springer-Verlag, Berlin, 2003).
[21] K. Okamoto, Fundamentals of Optical Waveguides (Academic Press, Waltham, 2006) chap. 7.
[22] Y. Wang, J. Fonseca-Campos, C. Q. Xu, S. Q. Yang, E. A. Ponomarev, and X. Y. Bao, Appl. Opt. 45, 5391 (2006).
[23] W. J. Lu, Y. P. Chen, L. H. Miu, X. F. Chen, Y. X. Xia, and X. L. Zeng , Opt. Express 16, 355 (2008).
[24] H. J. Caulfield and S. Dolev, Nat. Photon. 4, 261 (2012).
