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Related Experiment Video

Updated: Jun 24, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Mode-selective power splitters for mode-division multiplexing optical networks.

Yuyang Gao, Jian Cui, Xian Zhou

    Optics Express
    |June 11, 2024
    PubMed
    Summary
    This summary is machine-generated.

    We developed a novel all-fiber mode-selective power splitter (MSPS) for multicasting in mode-division multiplexing networks. This device offers stable, arbitrary splitting ratios for non-circular-symmetric LP modes, enhancing optical performance monitoring.

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    Area of Science:

    • Optical Engineering
    • Photonics
    • Telecommunications

    Background:

    • Mode-division multiplexing (MDM) networks enable higher data capacities by utilizing multiple spatial modes.
    • Effective mode manipulation is crucial for advanced functionalities like multicasting and monitoring within MDM systems.
    • Existing mode-selective devices often lack stability or flexibility for non-circular-symmetric modes.

    Purpose of the Study:

    • To propose and demonstrate an all-fiber mode-selective power splitter (MSPS) for non-circular-symmetric LP modes.
    • To achieve arbitrary power splitting ratios independent of input mode orientation.
    • To enhance the stability and performance of mode-selective couplers for MDM applications.

    Main Methods:

    • Theoretical analysis of three key conditions for MSPS operation.
    • Design of asymmetric two-core few-mode directional couplers using few-mode and two-mode fibers.
    • Numerical simulation of LP31 MSPS with various splitting ratios.
    • Fabrication of a 90/10 LP31 MSPS using tapering and polishing techniques.

    Main Results:

    • Demonstrated that core-to-core distance and coupling length control arbitrary splitting ratios.
    • Confirmed that asymmetric structure ensures selective power splitting for the target LP mode.
    • Fabricated LP31 MSPS exhibited significantly improved splitting ratio stability compared to conventional devices.

    Conclusions:

    • The proposed all-fiber MSPS is a viable solution for multicasting and optical performance monitoring in MDM networks.
    • The device's design allows for flexible and stable power splitting of non-circular-symmetric LP modes.
    • This advancement contributes to the practical implementation of higher-capacity optical communication systems.