DISPERSION ENGINEERED MID-IR SUPERCONTINUUM GENERATION USING DUAL-CORE SILICON-RICH NITRIDE PHOTONIC INTEGRATED WAVEGUIDE

Abstract

The dual-core silicon-rich nitride photonic integrated waveguide is presented here to numerically model the spanning of supercontinuum generation in the mid-IR region up to 4. 7 ~Lm wavelength range by engineering the dispersion profile such that maximum phase-matching can be achieved. Tunable dispersive wave generation is observed by the variation of gap spacing between two cores. The flat dispersion profile is also achieved in near-IR region by coupling t he fundamental mode in first waveguide core to the higher-order mode in second waveguide core that gives rise to anomalous GVD which plays an essential role in compensating chromatic dispersion in the mid-IR region.