[1] [1] P. Bakopoulos, E. Kehayas, A. E. H. Oehler, T. Sudmeyer, K. J. Weingarten, K. P. Hansen, C. Bintjas, U. Keller, and H. Avramopoulos, in Proceedings of OFC 2007 OWJ2 (2007).

[2] [2] W. H. Loh, B. N. Samson, L. Dong, G. J. Cowle, and K. Hsu, Lightwave Technol. 16, 114 (1998).

[3] [3] D. Jiang, X. Chen, Y. Dai, H. Liu, and S. Xie, IEEE Photon. Technol. Lett. 16, 2598 (2004).

[4] [4] Y. H. Shen, Y. Q. Qiu, B. Wu, W. Z. Zhao, S. Y. Chen, T. Sun, and K. T. V. Grattan, Opt. Express 15, 363 (2007).

[5] [5] O. Xu, S. Lu, S. Feng, Z. Tan, T. Ning, and S. Jian, Opt. Commun. 282, 962 (2009).

[6] [6] G. E. Villanueva, J. Palaci, J. L. Cruz, M. V. Andres, J. Marti, and P. Perez-Millan, Opt. Commun. 283, 5165 (2010).

[7] [7] X. Liu, IEEE Photon. Technol. Lett. 19, 632 (2007).

[8] [8] Y. Zhang, B. Guan, and H.-Y. Tam, Opt. Express 17, 10050 (2009).

[9] [9] Y. Kim, S. Doucet, and S. LaRochelle, IEEE Photon. Technol. Lett. 20, 1718 (2008).

[10] [10] S. H. Xu, Z. M. Yang, T. Liu, W. N. Zhang, Z. M. Feng, Q. Y. Zhang, and Z. H. Jiang, Opt. Express 18, 1249 (2010).

[11] [11] L. Li, A. Schulzgen, X. Zhu, J. V. Moloney, J. Albert, and N. Peyghambarian, Appl. Phys. Lett. 92, 051111 (2008).

[12] [12] E. Wikszak, J. Thomas, J. Burghoff, B. Ortac, J. Limpert, S. Nolte, U. Fuchs, and A. Tunnermann, Opt. Lett. 31, 2390 (2006).

[13] [13] N. Jovanovic, J. Thomas, R. J. Williams, M. J. Steel, G. D. Marshall, A. Fuerbach, S. Nolte, A. Tunnermann, and M. J. Withford, Opt. Express 17, 6082 (2009).

[14] [14] M. Ibsen, A. Fu, H. Geiger, M. N. Zervas, and R. I. Laming, in Proceedings of IEE Colloquium on High Speed and Long Distance Transmission 7/1 (1999).

[15] [15] H. N. Poulsen, P. Varming, A. Buxens, A. T. Clausen, I. Munoz, P. Jeppesen, C. V. Poulsen, J. E. Pedersen, and L. Eskildsen, in Proceedings of ECOC’99 1, 70 (1999).

[16] [16] G. Bonfrate, F. Vaninetti, and F. Negrisolo, IEEE Photon. Technol. Lett. 10, 1109 (1998).

[17] [17] http://www.npphotonics.com/files/products/Rock Laser Source.pdf.

[18] [18] H. Liu, D. Feng, L. Ding, Y. Xu, C. Ge, G. Kai, and X. Dong, in Proceedings of APCC/OECC 2, 1521 (1999).