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Parallel arrayed waveguide grating for wavelength-mode hybrid multiplexing.

Zepeng Wei, Aru Kong, Jingbo Hu

    Optics Letters
    |September 1, 2022
    PubMed
    Summary
    This summary is machine-generated.

    Researchers demonstrate a novel integrated device combining wavelength and mode division multiplexing for optical communications. This arrayed waveguide grating enables parallel multiplexing of multiple wavelengths and spatial modes, boosting data transmission capacity.

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    Area of Science:

    • Optical communications
    • Integrated photonics
    • Waveguide devices

    Background:

    • Optical communication capacity is limited by current multiplexing technologies.
    • Combining wavelength division multiplexing (WDM) and mode division multiplexing (MDM) offers significant capacity increases.
    • Existing configurations require multiple WDM devices for MDM input, lacking integrated solutions.

    Purpose of the Study:

    • To propose and demonstrate an integrated parallel wavelength division multiplexing (WDM) device for wavelength-mode hybrid multiplexing.
    • To address the need for compact and efficient devices in advanced optical communication systems.

    Main Methods:

    • Design and fabrication of a single 2x8 arrayed waveguide grating (AWG).
    • Utilizing the AWG for multiplexing 2 linearly polarized (LP) modes across 4 distinct wavelengths.
    • Integration with a mode division multiplexing (MDM) device.

    Main Results:

    • Successful demonstration of a single AWG device for hybrid wavelength-mode multiplexing.
    • Achieved multiplexing of 2 LP modes at 4 wavelengths.
    • Validated the parallel AWG concept for integrated optical communication.

    Conclusions:

    • The proposed parallel AWG is a viable solution for integrated wavelength-mode hybrid multiplexing.
    • This technology can be extended to support more wavelengths and spatial modes.
    • Significant potential for enhancing high-capacity optical data transmission.