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- W3136602979 abstract "Background: All-optical processing has a huge superiority in speed and efficiency than traditional optical-electrical-optical signal processing. Four-wave-mixing is an important nonlinear parametric process to achieve all-optical processing. Objective: We proposed the photonic crystal waveguide to enhance the conversion efficiency of four-wave-mixing significantly in practical application. Results: We demonstrated a waveguide composed of silicon with mono-layer graphene-coated as core and Si-Ge distributed periodically on both sides as cladding. By the introduction of the slow light effect of Si-Ge photonic crystal and the localization effect of graphene, the conversion efficiency of four-wave-mixing had enhanced dramatically. Results:: The conversion efficiency can be increased by 16dB compared with a silicon waveguide. The maximum efficiency as high as -9.1dB can be achieved in the Si-Ge-Graphene photonic crystal waveguide (SGG-PhCWG). The propagation loss can be decreased to 0.032dB/cm. Conclusion:: Numerical results of the proposed SGG-PhCWG matched well with nonlinear coupled- mode theory. This configuration offered a new physical mechanism and solution for alloptical signal processing and high-efficiency nonlinear nanoscale devices." @default.
- W3136602979 created "2021-03-29" @default.
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- W3136602979 date "2021-07-16" @default.
- W3136602979 modified "2023-09-23" @default.
- W3136602979 title "Ultrahigh-efficiency Enhanced Four-wave-mixing in Si-Ge-Graphene Photonic Crystal Waveguide" @default.
- W3136602979 doi "https://doi.org/10.2174/2210298101666210204162631" @default.
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