Husam A. Wahhab, Ahmed A. Amer, Maysoon H. Ismaail. 2020. “Investigation of SOA Amplifier Performance of 40 * 10 GB/S DWDM System With 50 GHz Channel Spacing”. International Journal of Advanced Science and Technology 29 (7s), 5278-83. http://sersc.org/journals/index.php/IJAST/article/view/25935.