[1] A. Bellemare, M. Karasek, M. Rochette, S. LRochelle, and M. Tetu, J. Lightwave. Technol. 18, 825 (2002).
[2] Y. Han, T. Tran, S. Kim, and S. Lee, Opt. Lett. 30, 1282 (2005).
[3] O. Graydon, W. Loh, R. Laming, and L. Dong, Photonics Technol. Lett. 8, 63 (2002).
[4] H. Ahmad, A. Sulaiman, S. Shahi, and S. Harun, Laser Phys. 19, 1002 (2009).
[5] H. Ahmad, S. Shahi, and S. Harun, Opt. Express 17, 203 (2009).
[6] A. Bjarklev, J. Broeng, and A. S. Bjarklev, Photonics Crystal Fibres (Kluwer Academic Publishers, Dordrecht, 2003).
[7] X. Yang, X. Dong, S. Zhang, F. Lu, X. Zhou, and C. Lu, Photonics Technol. Lett. 17, 2538 (2005).
[8] S. Harun, S. Aziz, N. Tamchek, N. Shahabuddin, and H. Ahmad, Electron. Lett. 44, 1065 (2008).