[1] [1] K. Iwatsuki and J. I. Kani, J. Opt. Commum. Netw. 1, C17 (2009).

[2] [2] A. Banerjee, Y. Park, F. Clarke, H. Song, S. Yang, G. Kramer, K. Kim, and B. Mukherjee, J. Opt. Netw. 4, 737 (2005).

[3] [3] N. Q. Thai, P. Besnard, L. Bramerie, A. Shen, C. Kazmierski, P. Chanlou, D. Guang-Hua, and J. C. Simon, IEEE Photon. Technol. Lett. 22, 733 (2010).

[4] [4] E. Wong, L. K. Lun, and T. B. Anderson, J. Lightwave Technol. 25, 67 (2007).

[5] [5] X. Jing and C. Lian-Kuan, IEEE Photon. Technol. Lett. 22, 456 (2010).

[6] [6] R. Murano, W. F. Sharfin, and M. J. Cahill, in Proceedings of OFC/NFOEC 2008 PDP32 (2008).

[7] [7] "PC Controlled tunable FBG," retrieved http://www.aos-fiber.com/eng/FBG/FBGen.html.

[8] [8] G. Bosco and P. Poggiolini, J. Lightwave Technol. 23, 842 (2005).

[9] [9] K. Croussore, I. Kim, Y. Han, C. Kim, G. Li, and S. Radic, Opt. Express 13, 3945 (2005).

[10] [10] G. Bosco, A. Coster, and V. Curri, in Proceedings of ECOC 2006 1 (2006).

[11] [11] X. Jing, C. Lian-Kuan, and C. Chun-Kit, IEEE Photon. Technol. Lett. 22, 1343 (2010).

[12] [12] C. W. Chow and C. H. Yeh, Opt. Express 19, 4970 (2011).

[13] [13] G. Talli, C. W. Chow, E. K. MacHale, and P. D. Townsend, J. Opt. Netw. 6, 765 (2007).