[1] [1] P. Li, D. Huang, and X. Zhang, IEEE J. Quantum Electron. 45, 1542 (2009).

[2] [2] Hassan Kaatuzian, Photonics (Amirkabir University of Technology PRESS, Tehran, 2009) vol. 2.

[3] [3] H. Ahmadi and H. Kaatuzian, in Proceedings ofiEEE International Workshop on Nonlinear Photonics Conference (NLP-LFNM) Ukraine (2011).

[4] [4] P. Li, D. Huang, X. Zhang, and G. Zhu, Opt. Express 14, 11839 (2006).

[5] [5] Z, Li and G. Li, IEEE Photon. Technol. Lett. 18, 1341 (2006).

[6] [6] V. Sharma, S. S. Pattnaik, S. Devi, S. Kamal, T. Garg, A. Pathak, and M. Smriti, J. Electrial Electron. Eng. Res. 2, 68 (2010).

[7] [7] M. J. Connelly, IEEE J. Quantum Electron. 37, 439 (2001).

[8] [8] H. Kaatuzian and M. K. Moazzam, Opt. Eng. 47, 014202 (2008).

[9] [9] B. Mikkelson, "Optical amplifier and their system applications", PhD. Thesis (Denmark Univ. Technol., Lyngby, Denmark, 1994).

[10] [10] T. D. Visser, H. Blok, and B. Demeulenaere, IEEE J. Quantum Electron. 33, 1763 (1997).

[11] [11] D. Botez, IEEE J. Quantum Electron. QE-14, 230 (1978).

[12] [12] J. Piprek, D. I. Babic, and J. E. Bowers, J. Appl. Phys. 81, 15 (1997).

[13] [13] H. Ahmadi and H. Kaatuzian, in Proceedigns ofiEEE High-Capacity Optical Network & Emerging/Enabling Technologies conference (HONET) Riyadh, Saudi Arabia (2011).