[1] [1] P. Chanclou, A. Pizzinat, F. Le Clech, T.-L. Reedeker, Y. Lagadec, F. Saliou, B. Le Guyader, L. Guillo, Q. Deniel, S. Gosselin, S. D. Le, T. Diallo, R. Brenot, F. Lelarge, L. Marazzi, P. Parolari, M. Martinelli, S. O'Dull, S. A. Gebrewold, D. Hillerkuss, J. Leuthold, G. Gavioli, and P. Galli, in Proceedings of Future Network and Mobile Summit (FutureNetworkSummit) 1 (2013).

[2] [2] N. J. Frigo, P. P. Iannone, P. D. Magill, T. E. Darcie, M. M. Downs, B. N. Desai, U. Koren, T. L. Koch, C. Dragone, H. M. Presby, and G. E. Bodeep, IEEE Photon. Technol. Lett. 6, 1365 (1994).

[3] [3] S.-J. Park, C.-H. Lee, K.-T. Jeong, H.-J. Park, J.-G. Ahn, and K.-H. Song, J. Lightwave Technol. 22, 2582 (2004).

[4] [4] Z. Zhang, Z. Cao, X. Chen, L. Wang, and M. Zhang, Chin. Opt. Lett. 11, 120602 (2013).

[5] [5] L. Yi, Z. Li, T. Zhang, D. Lin, Y. Dong, and W. Hu, Chin. Opt. Lett. 9, 120603 (2011).

[6] [6] M. Bi, H. He, S. Xiao, J. Li, and W. Hu, in Proceedings of 2013 18th OptoElectronics and Communications Conference held jointly with 2013 International Conference on Photonics in Switching (OECC/PS) 1 (2013).

[7] [7] N. Cvijetic, J. Lightwave Technol. 30, 384 (2012).

[8] [8] T. M. F. Alves, R. Sambaraju, A. V. T. Cartaxo, and A. Ng'oma, Chin. Opt. Lett. 11, 030606 (2013).

[9] [9] D. Qian, T.T.-O. Kwok, N. Cvijetic, J. Hu, and T. Wang, in Proceedings of Optical Fiber Communication Conference (OFC) PDPD9 (2010).

[10] [10] C. Browning, K. Shi, S. Latkowski, P. M. Anandarajah, F. Smyth, B. Cardiff, R. Phelan, and L. P. Barry, Opt. Express 19, B289 (2011).

[11] [11] J. G. Proakis, Digital Communications, 3rd edn. (McGraw-Hill, New York, 1995).

[12] [12] ITU-T Recommendation G.975.1, Appendix I.9 (2004).