M. Casas-Ramos, G. Sandoval-Romero, V. Argueta-Diaz, and E. Pinzon-Escobar, “Experimental results: spectrum output analysis of an EDFA with yterrbium-oped fiber using a superluminescent diode source”, Rev. Mex. Fís., vol. 62, no. 6 Nov-Dec, pp. 565–0, Jan. 2016.