We report computational modelling and numerical analysis of rib optical waveguide composed of chalcogenide GeSe₂-As₂Se₃-PbSe and MgF₂ glasses for mid infrared supercontinuum generation. Employing finite element method, we analyse the influence of geometrical parameters on waveguide dispersion & nonlinearity and perform dispersion engineering to minimize dispersion effects. Later, we analyse the influence of laser operating conditions on spectral broadening. Our simulations report a waveguide featuring zero dispersion wavelength at 2680 nm and 3310 nm in the mid infrared region, 1.4–7.6 μm spectral broadening when pumped at 3.1 μm wavelength with 85 fs pulses at peak power of 5.2 kW in a 10 mm long waveguide and nonlinearity of 991 W⁻¹ km⁻¹ making it suitable for mid infrared nonlinear applications.

我们报告计算建模和硫族化物组成的肋光波导的数值分析GESE ₂ -As ₂硒₃ -PbSe和的MgF _2度的眼镜中红外超连续谱产生。我们采用有限元方法，分析了几何参数对波导色散和非线性的影响，并进行色散工程以最小化色散效应。随后，我们分析了激光工作条件对光谱展宽的影响。我们的仿真报告显示，波导在中红外区域的2680 nm和3310 nm处具有零色散波长，在10 mm长的波导中以3.1μm的波长泵浦85 fs脉冲，5.2 kW的峰值功率时，光谱展宽为1.4–7.6μm 991 W的非线性^-1  km ^-1使其适用于中红外非线性应用。