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Related Experiment Video

Updated: May 2, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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Phase-sensitive amplification in silicon photonic crystal waveguides.

Yanbing Zhang, Chad Husko, Jochen Schröder

    Optics Letters
    |February 25, 2014
    PubMed
    Summary

    We demonstrated phase-sensitive amplification in silicon photonic crystal waveguides using four-wave mixing. This compact device achieved an 11 dB phase-extinction ratio, overcoming material limitations for enhanced optical signal processing.

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    Area of Science:

    • Photonics
    • Optical Engineering
    • Semiconductor Devices

    Background:

    • Phase-sensitive amplification is crucial for optical signal processing.
    • Silicon photonics offers miniaturization and integration potential.
    • Four-wave mixing (FWM) is a nonlinear process enabling amplification.

    Purpose of the Study:

    • To experimentally demonstrate phase-sensitive amplification in a silicon photonic crystal waveguide.
    • To achieve high phase-extinction ratio in a compact device.
    • To investigate the role of slow light in overcoming material nonlinearities.

    Main Methods:

    • Utilized pump-degenerate four-wave mixing in a silicon photonic crystal waveguide.
    • Employed broadband slow light to enhance nonlinear interactions.
    • Characterized device performance including phase-extinction ratio.

    Main Results:

    • Achieved 11 dB phase-extinction ratio.
    • Demonstrated phase-sensitive amplification in a record compact 196 μm device.
    • Observed good agreement between experimental results and numerical calculations despite two-photon absorption and free carriers.

    Conclusions:

    • Silicon photonic crystal waveguides are suitable for compact phase-sensitive amplification.
    • Broadband slow light effectively enhances nonlinear optical processes.
    • The demonstrated device shows promise for integrated optical signal processing.