Design of silicon waveguides for Kerr nonlinear optical performance with graphene oxide films

Abstract

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

16 pages, 12 figures, 119 references

References in corpus (21)

• All-optical signal processing platforms for CMOS compatible integrated nonlinear optics
• 1 Low power continuous-wave nonlinear optics in silica glass integrated waveguide structures
• Integrated micro-comb sources for quantum optical applications
• Photonic radio frequency and microwave intensity differentiator based on an optical frequency comb source in an integrated micro-ring resonator
• Novel architecture for ultra-stable micro-ring resonator based optical frequency combs
• Ultrafast modelocked nonlinear micro-cavity laser
• Microwave photonic fractional Hilbert transformer with an integrated optical soliton crystal micro-comb
• Parametric gain and wavelength conversion via third order nonlinear optics a CMOS compatible waveguide
• Optical Kerr soliton crystal microcomb source for RF photonic fractional differentiation
• Photonic RF channelizer based on a 90 wavelength optical soliton crystal 49GHz Kerr microcomb
• High bandwidth temporal RF photonic signal processing with Kerr micro-combs: integration, fractional differentiation and Hilbert transforms
• Photonic radio frequency and microwave integration based on a multi-wavelength 49GHz Kerr microcomb source
• Graphene oxide films for ultra-flat optics and linear and nonlinear integrated photonic circuits
• Enhanced four-wave-mixing with 2D layered graphene oxide films integrated with CMOS compatible micro-ring resonators
• Integrated polarizers based on graphene oxide in waveguides and ring resonators
• Theoretical design study of FWM in silicon nitride waveguides with integrated graphene oxide films
• Photonic Microwave and RF Channelizers using Kerr Micro-combs
• Measuring the Nonlinear Refractive Index of Graphene using the Optical Kerr Effect Method
• Soliton crystal Kerr microcombs for high-speed, scalable optical neural networks at 10 GigaOPs/s
• Optical data transmission field trial @ 44Tb/s with a 49GHz Kerr soliton crystal microcomb
• Ultra-high bandwidth fiber-optic data transmission with a single chip source

Cited by in corpus (12)

• Graphene oxide: new opportunities for optoelectronic, electronic and photonic chips
• Enhanced self-phase modulation in silicon nitride waveguides integrated with 2D graphene oxide films
• Enhanced spectral broadening via self-phase modulation with femtosecond optical pulses in silicon nanowires integrated with 2D graphene oxide films
• Supercontinuum generation in 2D graphene oxide film coated SiN waveguides
• Spectral Shaping with Integrated Self-Coupled Sagnac Loop Reflectors
• Photo-thermal tuning of graphene oxide coated integrated optical waveguides
• Enhancing the third-order optical nonlinear performance in CMOS devices with integrated 2D graphene oxide films
• Ultra-high bandwidth fiber-optic data transmission with a single chip source
• Waveguide optical parametric amplifiers in silicon nitride with 2D graphene oxide films
• Design of microring resonators integrated with 2D graphene oxide films for four-wave mixing
• Graphene oxide 2D films integrated with nanowires and ring resonators for enhanced nonlinear optics
• High 3rd Order Optical Kerr Nonlinearity of PdSe2 Di-chalcogenide 2D Films for Nonlinear Photonic Chips