“…Although much progress in this field has been reported recently, state-of-the-art mid-IR SC systems are still in their infancy and considerable effort is required before mature broadband IR SC light sources beyond 5 μm are made available for industrial applications. Soft glasses, such as chalcogenide (As 2 S 3 , As 2 Se 3 , GeAsSe) [1][2][3][4][5], Tellurite (TeO 2 ), chalcohalides (GeTe, GeAsTeSe) [18,19], heavy metal oxide (PbO-Bi 2 O 3 -Ga 2 O 3 -SiO 2 -CdO) [9] and ZBLAN (ZrF 4 -BaF 2 -LaF 3 -AlF 3 -NaF) [20][21][22] have been widely used for drawing highly nonlinear infrared fibers, and experiments have shown efficient SC generation in the mid-IR up to 15 μm [1,2], and up to 11 μm using all-fiber cascaded systems [23,24]. Among the wide variety of infrared fibers, chalcogenide-glass-based optical fibers (composed of S, Se or Te) are excellent photonic platforms for nonlinear applications in the mid-IR due to their wider transmission window, tailorable dispersion in the mid-IR, and high optical nonlinearity up to hundred times greater than silica or ZBLAN glasses [1][2][3][4][5].…”