Optimizing the Kerr Nonlinear Optical Performance of Silicon Waveguides Integrated With 2D Graphene Oxide Films

The Kerr nonlinear optical performance of silicon nanowire waveguides integrated with 2D layered graphene oxide (GO) films is theoretically studied and optimized based on experimentally measured linear parameters the GO films. strong mode overlap between nanowires highly yields a significantly enhanced nonlinearity for hybrid waveguides. A detailed analysis influence waveguide geometry film thickness propagation loss, parameter, figure merit (FOM) performed. results show that effective parameter FOM can be increased by up to 52 79 times relative bare nanowires, respectively. Self-phase modulation (SPM)-induced spectral broadening pulses used as benchmark evaluate performance, examining tradeoff enhancing minimizing loss. By optimizing device balance this, high factor 27.8 achieved, more than 6 achieved in previous experiments. Finally, pulse chirp, material anisotropy, interplay saturable absorption SPM also discussed, together comparison after going through GO-coated graphene-coated These provide useful guidance