Design of Microring Resonators with Various Waveguide Cross Sections to Minimize Nonlinear Effects in SISCAP Platform

Our work focuses on enhancing the understanding and optimizing the performance of microring resonators (MRRs), which are essential for the progress of silicon photonics technology. We design silicon and polysilicon MRRs with different cross-sections to minimize the nonlinear effects (two photon absorption and free carrier absorption) and self-heating in the SISCAP platform. In conclusion, we demonstrate that free carrier diffusion in particular rib waveguides reduce these effects resulting in high Q- factor (130,000).