[1] G. S. Zervas, M. De Leenheer, L. Sadeghioon, D. Klonidis, Y. Qin, R. Nejabati, D. Simeonidou, C. Develder, B. Dhoedt, and P. Demeester, J. Opt. Commun. Netw. 1, 69 (2009).

[2] M. De Leenheer, C. Develder. J. Buysse, B. Dhoedt, and P. Demeester, Opt. Switch. Netw. 6, 88 (2009).

[3] P.-H. Ho, H. T. Mouftah, and J. Wu, IEEE J. Sel. Areas Commun. 21, 1133 (2003).

[4] T. Goh, T. Kitoh, M. Kohtoku, M. Ishii, T. Mizuno, and A. Kaneko, in Proceedings of OFC/NFOEC 2008 OWC6 (2008).

[5] X.-J. Kuo and C. Chen, in Proceedings of 2007 IEEE Workshop on High Performance Switching and Routing 126 (2007).

[6] Y. Zhao, J. Zhang, D. Han, X. Zhang, Y. Yao, W. Gu, and Y. Ji, IET Commun. 3, 1716 (2009).

[7] W. Li, D. Liu, C. Yang, C. Wu, J. Zhu, X. Zhou, and M. Mao, Chinese J. Lasers (in Chinese) 33, 351 (2006).

[8] J. Comellas, J. Conesa, and G. Junyent, Photon. Network Commun. 5, 81 (2003).

[9] P. Hou, Z. Song, X. Li, J. Zhang, and L. Liu, Acta Opt. Sin. (in Chinese) 28, 365 (2008).

[10] N. Akar and E. Karasan, in Proceedings of 1st International Conference on Broadband Networks 110 (2004).