Shahsavari, Zahra, Maryam Nayeri, Mohammadreza Shayesteh, and Afsaneh Raeesi Goojni. 2015. “Evaluation of the Performance of a HPON Network Using SNR Changes Resulting from an Increase in the Length of Bidirectional Optical Fiber”. Majlesi Journal of Telecommunication Devices 4 (3). http://journals.iaumajlesi.ac.ir/td/index/index.php/td/article/view/276.