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Related Experiment Video

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Broadband and compact silicon mode converter designed using a wavefront matching method.

Yusuke Sawada, Takeshi Fujisawa, Kunimasa Saitoh

    Optics Express
    |December 31, 2020
    PubMed
    Summary
    This summary is machine-generated.

    This study demonstrates a novel silicon waveguide mode converter for mode division multiplexing. The broadband device, designed using wavefront matching, shows excellent correlation between simulations and experimental results.

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    Area of Science:

    • Photonics and Optical Communications
    • Semiconductor Devices

    Background:

    • Mode division multiplexing (MDM) systems require efficient mode converters.
    • Silicon photonics offers a platform for integrated optical devices.
    • Broadband operation is crucial for practical MDM systems.

    Purpose of the Study:

    • To design and experimentally demonstrate a broadband and compact TE0-TE1 mode converter.
    • To validate the wavefront matching method for silicon photonic devices.
    • To enable low-cost mass production of mode converters.

    Main Methods:

    • Wavefront matching method for device design.
    • Optimization considering seven wavelengths for broadband operation.
    • Fabrication using standard complementary metal-oxide-semiconductor (CMOS) technology.

    Main Results:

    • First experimental demonstration of a silicon waveguide mode converter designed by wavefront matching.
    • Broadband operation achieved through multi-wavelength optimization.
    • Fabricated device measurements show strong correlation with calculated results.

    Conclusions:

    • The wavefront matching method is effective for designing broadband silicon mode converters.
    • CMOS fabrication enables cost-effective mass production.
    • The demonstrated device is suitable for integrated mode division multiplexing systems.