[2] G. Cossu, A. M. Khalid, P. Choudhury, R. Corsini, E. Ciaramella. Opt. Express, 20, B501(2012).
[3] H. L. Minh, D. O’Brien, G. Faulkner, L. Zeng, K. Lee, D. Jung, Y. Oh. Proceedings of ECOC 2008, 1(2008).
[4] N. Fujimoto, S. Yamamoto. Proceedings of ECOC 2014, 1(2014).
[5] R. Li, Y. Wang, C. Tang, H. Shang, N. Chi. Chin. Opt. Lett., 11, 080605(2013).
[6] H. Dong, H. Zhang, K. Lang, B. Yu, M. Yao. Chin. Opt. Lett., 12, 052301(2014).
[7] Y. Wang, Y. Wang, N. Chi, J. Yu, H. Shang. Opt. Express, 21, 1203(2013).
[8] N. Chi, Y. Wang, Y. Wang, X. Huang, X. Lu. Chin. Opt. Lett., 12, 010605(2014).
[9] J. S. Bell. Proc. IEE-Part B: Radio Electron. Eng., 105, 185(1958).
[10] H. Elgala, R. Mesleh, H. Haas. Proceedings of the 6th International Conference on Wireless and Optical Communications Networks, 1(2009).
[11] R. A. Shafik, S. Rahman, A. H. M. Razibul Islam. Proceedings of ICECE, 408(2006).