[1] J. L. Pamart, E. Lefranc, S. Morin, G. Balland, Y. C. Chen, T. M. Kissell, and J. L. Miller, Electron. Lett. 30, 342 (1994).
[2] T. Mizuochi, Y. Miyata, T. Kobayashi, K. Ouchi, K. Kuno, K. Kubo, K. Shimizu, H. Tagami, H. Yoshida, H. Fujita, M. Akita, and K. Moto-shima, IEEE J. Sel. Top. Quantum Electron. 10, 376 (2004).
[3] D. Han, L. Xi, M. Li, H. Chen, and F. Liu, Chin. Opt. Lett. 9, 070604 (2011).
[4] B. Vasic and I. B. Djordjevic, IEEE Photon. Technol. Lett. 14, 1208 (2002).
[5] B. Vasic, I. B. Djordjevic, and R. Kostuk, J. Lightwave Technol. 21, 438 (2003).
[6] Y. Wu, A. Yang, L. Feng, and Y. Sun, Chin. Opt. Lett. 11, 030601 (2013).
[7] Y. Wu, A. Yang, Y. Sun, and Q. Zhao, Chin. Opt. Lett. 10, s10605 (2012).
[8] M. Arabaci, I. B. Djordjevic, R. Saunders, and R. M. Marcoccia, IEEE Photon. Technol. Lett. 22, 434 (2010).
[9] D. Chang, F. Yu, Z. Xiao, Y. Li, N. Stojanovic, C. Xie, X. Shi, X. Xu, and Q. Xiong, in Proceedings of Optical Fiber Communication Conference and Exposition (OFC/NFOEC) OTuN2 (2011).
[10] Y. Zhang, M. Arabaci, and I. B. Djordjevic, Opt. Express 20, 9296 (2012).
[11] O. Milenkovic, I. B. Djordjevic, and B. Vasic, IEEE J. Sel. Top. Quantum Electron. 10, 294 (2004).
[12] J. Hansryd, P. A. Andrekson, M. Westlund, J. Li, and P. Hedekvist, IEEE J. Sel. Top. Quantum Electron. 8, 506 (2002).
[13] H. Xiao and A. H. Banihashemi, IEEE Commun. Lett. 8, 715 (2004).