Dual-pump Optical Parametric Oscillation in a 4H-SiC-on-insulator Microring Resonator

Silicon carbide (SiC) has large refractive index, wide bandgap, and strong material-based second- and third-order nonlinearities. Thus, in recent years, SiC has attracted considerable interests in quantum and nonlinear integrated photonics [1] – [3] with potential applications within broadband nonlinear light sources, including photon-pair sources, supercontinuum generation, and frequency combs. Optical parametric oscillation (OPO) is regarded as a promising way to produce new frequencies and an important tool in generation of coherent light sources, such as frequency combs. In this work, we experimentally demonstrate a Kerr-nonlinearity based dual continuous-wave(CW) pumped OPO in a 4H-SiC-on-insulator (4H-SiCOI) microring resonator.