What question did this study set out to answer?

To achieve high-efficiency wavelength conversion into the 2 μm mid-infrared region using Raman-enhanced four-wave mixing in a planar silicon waveguide.

November 1, 2025APL PhotonicsOpen Access

High-efficiency mid-infrared wavelength conversion in silicon waveguides

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Authors

TCTongren ChenBeijing Institute of Technology MHMeng HuangQuzhou University SSShiyu SunHebei University of Technology

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Implication

Experimental study demonstrates mid-infrared wavelength conversion in silicon waveguides using Raman-assisted four-wave mixing, highlighting viable paths for low-power optical chips.

Key Points

To achieve high-efficiency wavelength conversion into the 2 μm mid-infrared region using Raman-enhanced four-wave mixing in a planar silicon waveguide.
Aligned four-wave mixing phase-matching conditions directly with the Raman gain bandwidth inside a planar silicon waveguide.
Applied a continuous-wave pump laser operating at ~45 mW of optical power to initiate the hybrid conversion process.
Modeled waveguide dispersion profile optimizations using numerical simulations to project potential efficiency gains.
Achieved a mid-infrared wavelength conversion efficiency of −25 dB into the 2 μm region at ~45 mW continuous-wave pump power.
Measured a maximum Raman enhancement of ~7 dB within the hybrid four-wave mixing process.
Demonstrated via simulations that optimizing waveguide dispersion could boost continuous-wave conversion efficiency to ~−11 dB.

Cite This Study

Chen et al. (2025) studied this question.

synapsesocial.com/papers/6a758d00e42ca79ec1e72725 https://doi.org/10.1063/5.0288541

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Implication

Experimental study demonstrates mid-infrared wavelength conversion in silicon waveguides using Raman-assisted four-wave mixing, highlighting viable paths for low-power optical chips.

High-efficiency mid-infrared wavelength conversion in silicon waveguides

Discussion

Member takes

Implication

Key Points

Cite This Study

High-efficiency mid-infrared wavelength conversion in silicon waveguides

Discussion

Member takes

Implication

Key Points

Cite This Study

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