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Silicon nanoridge array waveguides for nonlinear and sensing applications.

Matthew W Puckett, Rajat Sharma, Felipe Vallini

    Optics Express
    |November 13, 2015
    PubMed
    Summary
    This summary is machine-generated.

    We developed new silicon waveguides with deep subwavelength patterning. These waveguides offer enhanced nonlinear properties and sensing capabilities with low propagation loss, making them ideal for advanced photonic applications.

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    Area of Science:

    • Photonics
    • Materials Science
    • Nanotechnology

    Background:

    • Silicon photonics is crucial for integrated circuits.
    • Subwavelength structures offer unique optical properties.
    • Existing waveguides face limitations in nonlinear and sensing applications.

    Purpose of the Study:

    • To fabricate and characterize novel silicon waveguides with deep subwavelength patterning.
    • To evaluate their suitability for nonlinear optics and sensing.
    • To optimize waveguide geometry for enhanced performance.

    Main Methods:

    • Fabrication of silicon ridges on silicon-on-insulator wafers using deep subwavelength patterning.
    • Guided mode and bulk optical measurements.
    • Characterization of propagation losses and nonlinear susceptibility.

    Main Results:

    • Demonstrated deep subwavelength silicon waveguides.
    • Achieved comparable propagation losses to existing schemes.
    • Observed enhanced effective third-order nonlinear susceptibility.
    • Showcased high sensitivity to environmental perturbations.

    Conclusions:

    • Deep subwavelength silicon waveguides are highly promising for nonlinear and sensing applications.
    • The proposed geometry offers a superior balance of low loss, enhanced nonlinearity, and sensitivity.
    • This technology enables advancements in integrated photonics.