WASET
    M. H. Al-Mansoori and  W. S. Al-Ghaithi and  F. N. Hasoon,  55 dB High Gain L-Band EDFA Utilizing Single Pump Source .   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2014, vol. 91(7). 1201 - 1203
    [viewed 05 May 2024]. Available from: https://publications.waset.org/pdf/9998866.