“…Fluoride, chalcogenide, and tellurite glass fibers with high transmittance and ANDi in the mid−infrared range are promising nonlinear mediums to generate highly coherent MIR SC. Recently, Xiao et al proposed a microstructured chalcogenide fiber with ANDi for coherent MIR SC generation, and the SC spectrum is from 3823 nm to 13,577 nm based on a 1 cm long fiber [17]. Zhang et al fabricated step−index chalcogenide fiber with ANDi, and coherent MIR SC from 1.7-12.7 µm was generated from the fiber pumped at 5 µm [18].…”