M. Zakaryia, Yahya, Moustafa H. Aly, and Osama Mahran and Ahmed E. El-Samahy. 2012. “Erbium Doped Fiber Amplifier Performance Using Different Host Materials in the Band 1450-1650 Nm: A Comparative Study”. IIUM Engineering Journal 5 (2). https://doi.org/10.31436/iiumej.v5i2.381.