[1] [1] K. Furusawa, T. Kogure, T. M. Monro, and D. J. Richardson, Opt. Express 44, 3452 (2004).

[2] [2] A. Hassani, E. Arzi, and F. E. Seraji, J. Opt. Quantum Electron. 39, 35 (2007).

[3] [3] P. Glas and D. Fischer, Opt. Express 10, 286 (2002).

[4] [4] A. D'Orazio, M. De Sario, L. Mescia, V. Petruzzelli, and F. Prudenzano, Opt. Express 13, 9970 (2005).

[5] [5] J. Arriaga, J. C. Knight, and P. St. J. Russell, Phys. Nonlinear Phenom. 189, 100 (2004).

[6] [6] E. Knudsen and A. Bjarklev, Opt. Commun. 222, 155 (2003).

[7] [7] Y. Z. He and F. G. Shi, Opt. Commun. 225, 151 (2003).

[8] [8] K. Saitoh and M. Koshiba, J. Lightwave Technol. 23, 3580 (2005).

[9] [9] F. E. Seraji, M. Rashidi, and V. Khasheie, Chin. Opt. Lett. 4, 442 (2006).

[10] [10] M. Midrio, M. P. Singh, and C. G. Someda, J. Lightwave Technol. 18, 1031 (2000).

[11] [11] A. Cucinotta, F. Poli, S. Selleri, L. Vincetti, and M. Zoboli, J. Lightwave Technol. 21, 782 (2003).

[12] [12] R. F. Cregan, J. C. Knight, P. St. J. Russell, and P. J. Roberts, J. Lightwave Technol. 17, 2138 (1999).

[13] [13] C. R. Giles and E. Desurvire, J. Lightwave Technol. 9, 271 (1991).

[14] [14] Y.-F. Li, C.-Y. Wang, Z.-H. Wang, M.-L. Hu, and L. Chai, Opt. Laser Technol. 39, 322 (2007).

[15] [15] A. Ghatak and K. Thyagarajan, Introduction to Fiber Optics (Cambridge University Press, 1998).

[16] [16] J. H. Mathews and K. K. Fink, Numerical Methods Using Matlab (Prentice-Hall Inc., 4th edn., 2004).

[17] [17] M. D. Talebzadeh, “An investigation on amplification of erbium doped holey fiber using fundamental space filling mode", M. S. Thesis (Vali Asr University, Rafsanjan, Iran, Nov. 2006).