研究目的
To experimentally analyze in detail how to integrate graphene onto a silicon waveguide and the corresponding performance improvements in self-phase modulation (SPM) on silicon photonic waveguides.
研究成果
The integration of graphene onto silicon waveguides enhances the nonlinear parameter, Kerr nonlinearity, and figure-of-merit, demonstrating significant improvements in self-phase modulation performance.
研究不足
The study does not account for spontaneous Raman scattering (SRS) and the free carrier effect (FCA) in the simulations, as they play minor roles in the on-chip SPM formation in silicon waveguides.
1：Experimental Design and Method Selection:
The study involves fabricating silicon-on-insulator waveguides covered with graphene and investigating self-phase modulation effects.
2：Sample Selection and Data Sources:
Monolayer graphene was transferred onto silicon waveguides fabricated on a silicon-on-insulator wafer.
3：List of Experimental Equipment and Materials:
Equipment includes a PriTel FFL-TW laser, Corning SMF 28 tapered lensed fiber, and an optical spectrum analyzer (YOKAGAWA AQ6370D).
4：Experimental Procedures and Operational Workflow:
Picosecond laser pulses were launched into the waveguide, and spectral broadening was observed as a function of input power.
5：Data Analysis Methods:
The nonlinear Schr?dinger equation with the split-step Fourier method was used for simulation.
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