[1] M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, IEEE Commun. Mag. 47, 66 (2009).

[2] O. Rival and A. Morea, in Proceedings of OFC/NFOEC 2011 OTUI4 (2011).

[3] A. N. Patel, P. N. Ji, J. P. Jue, and T. Wang, in Proceedings of OSA Photonics PDPWG1, (2010).

[4] H. Ye, H. Chen, C. Tang, M. Chen, and S. Xie, Chin. Opt. Lett. 9, 010603 (2011).

[5] Y. Hao, Y. Li, R. Wang, and W. Huang, Chin. Opt. Lett. 10, 010701 (2012).

[6] B. Kozicki, H. Takara, T. Yoshimatsu, K. Yonenaga, and M. Jinno, in Proceedings of OFC 2009 JWa43 (2009).

[7] S. Gringeri, B. Basch, V. Shukla, R. Egorov, T. J. Xia, and V. Laboratories, IEEE Commum. Mag. 48, 40 (2010).

[8] Y. Sone, A. Hirano, A. Kadohata, M. Jinno, and O. Ishida, in Proceedings of ECOC 2011 Mo.1.K.3 (2011).

[9] K. Christodoulopoulos, I. Tomkos, and E. Varvarigos, in Proceedings of ECOC 2010 We.8.D.3 (2010).

[10] Y. Wang, X. Cao, and Y. Pan, in Proceedings of INFORCOM 2011 1503 (2011).

[11] K. Christodoulopoulos, I. Tomkos, and E. A. Varvarigos, J. Lightwave Technol. 29, 1354 (2011).

[12] M. Jinno, B. Kozichi, H. Takara, A. Watanabe, Y. Sone, T. Tanaka, and Akira Hirano, IEEE Commun. Mag. 48, 138 (2010).

[13] T. Takagi, H. Hasegawa, K. Sato, Y. Sone, A. Hirano, and M. Jinno, in Proceedings of ECOC 2011 Mo.2.K.3 (2011).

[14] K. Wen, Y. Yin, D. J. Geisler, S. Chang, and S. J. B. Yoo, in Proceedings of ECOC 2011 Mo.2.K.4 (2011).

[15] X. Wan, L. Wang, N. Hua, H. Zhang, and X. Zheng, in Proceedings of OFC 2011 JWA55 (2011).

[16] Y.-K. Huang, E. Ip, M.-F. Huang, B. Zhu, P. N. Ji, Y. Shao, D.W. Peckham, R. Lingle., Jr, Y. Aono, T. Tajima, and T.Wang, in Proceedings of OECC 2010 PDP (2010) .