Abstract:We investigate theoretically the mid-infrared (MIR) Raman soliton self-frequency shift (SSFS) process in the TeO2-BaF2-Y2O3 (TBY) fiber and AsSe2-As2S5 fiber. The numerical analysis of the SSFS process in the TBY fiber is performed, revealing the impacts of the pumping wavelength and fiber core diameter on the SSFS effect. A new quantity measuring the frequency shift ability of a Raman shifter fiber is derived to interpret the complex relation between the frequency shift amount and the fiber parameter observed… Show more