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Related Experiment Video

Updated: Jul 6, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Published on: April 4, 2017

High-Efficiency Light Coupling in a Submicrometric Silicon-on-Insulator Waveguide.

R Orobtchouk, A Layadi, H Gualous

    Applied Optics
    |March 21, 2008
    PubMed
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    Adding a mirror above grating couplers significantly boosts light coupling efficiency into thin waveguides. This enhanced design achieves up to 80% efficiency, validated by silicon-on-insulator waveguide experiments.

    Area of Science:

    • Optics and Photonics
    • Nanophotonics
    • Waveguide Technology

    Background:

    • Grating couplers are standard for light coupling into sub-micrometer waveguides.
    • Achieving high coupling efficiency remains a key challenge in integrated photonics.

    Purpose of the Study:

    • To investigate a novel grating coupler design incorporating a mirror for enhanced light coupling efficiency.
    • To quantify the efficiency improvement offered by the mirror-enhanced grating coupler.

    Main Methods:

    • Design and simulation of a mirror-enhanced grating coupler.
    • Numerical calculations using a high-angular-spread Gaussian incident beam model.
    • Experimental validation using a standard silicon-on-insulator waveguide.

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    Last Updated: Jul 6, 2026

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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    Published on: April 4, 2017

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

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    Main Results:

    • The addition of a mirror above the grating strongly enhances coupling efficiency.
    • The mirror-enhanced coupler design achieves efficiencies as high as 80%.
    • Numerical calculations show good agreement with experimental results.

    Conclusions:

    • Mirror-enhanced grating couplers offer a significant improvement over traditional designs.
    • This technology holds promise for more efficient light manipulation in integrated photonic circuits.
    • The validated design provides a pathway for high-efficiency optical coupling in various applications.