Christopher Ogwugwuam Ezeagwu. 2020. “Improving Fibre Optics Transmission With Wave Length Division Multiplex through Routed-Switching Network”. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006 6 (8):50-55. https://doi.org/10.31695/IJASRE.2020.33848.