Multi-material Photonic Crystal Fiber in MIR Region for Broadband Supercontinuum Generation

In this paper, we have numerically investigated a multi-material photonic crystal fiber and simulated 1.6–4.2 µm mid-infrared supercontinuum generation. This mid-infrared broadband supercontinuum is observed for photonic crystal fiber of 100 mm length, when pumped with 85 fs laser pulses operating at 2.5 µm and peak power pulse is 350 W. The design of photonic crystal fiber with borosilicate and As2S3 glass has broad and flat dispersion profile with two zero dispersion wavelengths and high nonlinearity which helps in the generation of broadband supercontinuum.