[1] [1] K. Y. Song, M. G. Herraez, and L. Thevenaz, Opt. Express 13, 82 (2005).

[2] [2] Y. Okawachi, M. S. Bigelow, J. E. Sharping, Z. M. Zhu, A. Schweinsberg, D. J. Gauthier, R. W. Boyd, and A. L. Gaeta, Phys. Rev. Lett. 94, 153902 (2005).

[3] [3] M. D. Stenner, M. A. Neifeld, Z. Zhu, A. M. C. Dawes and D. J. Gauthier, Opt. Express 13, 9995 (2005).

[4] [4] A. Minardo, R. Bernini, and L. Zeni, Opt. Express 14, 5866 (2006).

[5] [5] T. Sakamoto, T. Yamamoto, K. Shiraki, and T. Kurashima, Opt. Express 16, 8026 (2008).

[6] [6] Y. Dong, Z. Lu, Q. Li, and Y. Liu, J. Opt. Soc. Am. B 25, c109 (2008).

[7] [7] Z. Lu, Y. Dong, and Q. Li, Opt. Express 15, 1871 (2007).

[8] [8] L. Yi, L. Zhan, W. Hu, and Y. Xia, IEEE Photon. Technol. Lett. 19, 619 (2007).

[9] [9] Z. Shi, R. Pant, Z. Zhu, M. D. Stenner, M. A. Neifeld, D. J. Gauthier, and R. W. Boyd, Opt. Lett. 32, 1986 (2007).

[10] [10] E. Shumakher, N. Orbach, A. Nevet, D. Dahan, and G. Eisenstein, Opt. Express 14, 5877 (2006).

[11] [11] R. Pant, M. D. Stenner, M. A. Neifeld, Z. Shi, R. W. Boyd, and D. J. Gauthier, Appl. Opt. 46, 6513 (2007).

[12] [12] M. G. Herraez, K. Y. Song, and L. Thevenaz, Opt. Express 14, 1395 (2006).

[13] [13] Z. Zhu, A. M. C. Dawes, D. J. Gauthier, L. Zhang, and A.E. Willner, J. Lightwave Technol. 25, 201 (2007).

[14] [14] B. Zhang, L. Yan, I. Fazal, L. Zhang, A. E. Willner, Z. Zhu, and D. J. Gauthier, Opt. Express 15, 1878 (2007).

[15] [15] L. Yi, Y. Jaouen, W. Hu, Y. Su, and S. Bigo, Opt. Express 15, 16972 (2007).

[16] [16] R. Pant, M. D. Stenner, M. A. Neifeld, and D. J. Gauthier, Opt. Express 16, 2764 (2008).

[17] [17] E. Cabrera-Granado, O. G. Calderon, S. Melle, and D. J. Gauthier, Opt. Express 16, 16032 (2008).

[18] [18] Y. Zhu, M. Lee, M. A. Neifeld, and D. J. Gauthier, Opt. Express 19, 687 (2011).

[19] [19] M. Lee, Y. Zhu, D. J. Gauthier, M. E. Gehm, and M. A. Neifeld, Appl. Opt. 50, 6063 (2011).

[20] [20] B. Zhang, L. Yan, J. Y. Yang, I. Fazal, and A. E. Willner, IEEE Photon. Technol. Lett. 19, 1081 (2007).

[21] [21] H. Chen, Opt. Lett. 30, 619 (2005).

[22] [22] L. Yi, Z. Li, T. Zhang, D. Lin, Y. Dong, and W. Hu, Chin. Opt. Lett. 9, 120603 (2011).

[23] [23] L. Yi, W. Hu, H. He, Y. Dong, Y. Jin, and W. Sun, Chin. Opt. Lett. 9, 030603 (2011).

[24] [24] K. Y. Song and K. Hotate, Opt. Lett. 32, 217 (2007).

[25] [25] A. Zadok, A. Eyal, and M. Tur, Appl. Opt. 50, E38 (2011).