Monolithic all-fiber mid-infrared supercontinuum source based on a step-index two-mode As2S3 fiber
Yao Jinmei1, Zhang Bin1, 2, 3, †, Hou Jing1, 2, 3
       

(a) Spectral evolution of the SC as a function of average pump power (the corresponding launched pump powers are shown in the legend) and (b) output power versus average pump power in the 3-m-long As2S3 fiber with a core diameter of 9 μ m .