Enhanced four-wave-mixing of inversely tapered asymmetric C-rich SiC channel waveguide

Abstract

Inversely tapered asymmetric C-rich SiC waveguide with 10-dB insertion loss in 9-mm length reveals strong nonlinear refractive index of 2.5×10⁻¹² cm²/W to enhance four-wave mixing at a conversion efficiency up to −49 dB.