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Related Experiment Video

Updated: Apr 3, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

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Polarization rotation Bragg diffraction using Si wire waveguide grating and polarization rotator.

Hideaki Okayama, Yosuke Onawa, Daisuke Shimura

    Optics Express
    |September 15, 2015
    PubMed
    Summary
    This summary is machine-generated.

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    We developed a polarization-independent Bragg grating wavelength filter that achieves high diffraction efficiency. This novel filter ensures consistent performance for all input polarizations, simplifying optical systems.

    Area of Science:

    • Photonics
    • Optical Engineering
    • Materials Science

    Background:

    • Bragg gratings are crucial for wavelength filtering but often suffer from polarization dependency.
    • Achieving polarization independence in optical filters is a significant challenge in photonic device design.

    Purpose of the Study:

    • To design and demonstrate a polarization-independent Bragg grating wavelength filter with high diffraction efficiency.
    • To overcome the limitations of conventional polarization-sensitive optical filters.

    Main Methods:

    • Utilized a rib waveguide polarization rotator integrated with an antisymmetric grating structure.
    • Employed fundamental to first-order diffraction for polarization rotation Bragg diffraction.
    • Verified the concept through both numerical simulations and experimental validation.

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    Related Experiment Videos

    Last Updated: Apr 3, 2026

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
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    Main Results:

    • Achieved identical diffraction efficiencies and peak wavelengths for two orthogonal input polarizations.
    • Demonstrated strong diffraction with ease.
    • Experimentally realized a polarization-independent band-pass filter using a polarization beam splitter and the developed polarization rotation Bragg diffraction.

    Conclusions:

    • The proposed polarization rotation Bragg diffraction method effectively creates polarization-independent Bragg grating wavelength filters.
    • The demonstrated device offers a practical solution for applications requiring polarization-insensitive optical filtering.