[1] M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, IEEE Commun. Mag. 47, 66 (2009).
[2] K. Christodoulopoulos, I. Tomkos, and E. Varvarigos, in Proceedings of OFC/NFOEC OTul5 (2011).
[3] Y. Wang, J. Zhang, Y. Zhao, J. Liu, and W. Gu, Chin. Opt. Lett. 10, S10606 (2012).
[4] T. Takagi, H. Hasegawa, K. Sato, Y. Sone, A. Hirano, and M. Jinno, in Proceedings of OFC OTul7 (2011).
[5] H. Yang, Y. Zhao, J. Zhang, W. Gu, S. Wang, Y. Lin, and Y. Lee, Chin. Opt. Lett. 11, 070605 (2013).
[6] K.-J. Lu, G.-X. Xiao, and I. Chlmatac, in Proceedings of ICC 2912 (2002).
[7] R. Ramaswami and K. Sivarajan, in Proceedings of INFOCOM 970 (1994).
[8] Z. Zhang and A. Acampora, in Proceedings of INFOCOM 534 (1994).
[9] A. Girard, IEEE/ACM Trans. Netw. 3, 489 (1995).
[10] H. Harai, M. Murata, and H. Miyahara, in Proceedings of INFOCOM 516 (1997).
[11] A. Mokhtar and M. Azizoglu, IEEE/ACM Trans. Netw. 6, 197 (1998).
[12] Y. Zhao, J. Zhang, D. Han, X. Zhang, Y. Yao, W. Gu, and Y. Ji, IET Commun. 3, 1716 (2009).
[13] C. Xin, C. Qiao, and S. Dixit, Proc. SPIE 5285, 91(2003).
[14] H. Waldman, D. R. Campelo, and R. C. Almeida, Jr, Proc. SPIE 5285, 324 (2003).
[15] A. Alyatama, J. Wireless Opt. Commun. 4, 75 (2007).
[16] A. Alyatama, Computer Networks 49, 727 (2005).
[17] A. A. Frederick, Bell Syst. Technol. J. 59, 805 (1980).