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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
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Supersymmetry-guided method for mode selection and optimization in coupled systems.

Wiktor Walasik, Bikashkali Midya, Liang Feng

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    Summary
    This summary is machine-generated.

    We developed a supersymmetry-based method to suppress unwanted super-modes in coupled optical systems. This approach enhances the lifetime of desired modes, enabling single-mode operation and improving system performance.

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    Area of Science:

    • Optics and Photonics
    • Quantum Mechanics
    • Materials Science

    Background:

    • Coupled optical systems like waveguide arrays and laser arrays often exhibit unwanted super-modes, hindering single-mode operation.
    • Efficient suppression of these super-modes is crucial for controlling light propagation and enhancing device performance.

    Purpose of the Study:

    • To introduce a systematic supersymmetry-based approach for selectively eliminating unwanted super-modes in coupled optical systems.
    • To enhance the lifetime of desired modes relative to unwanted ones, thereby achieving single-mode operation.

    Main Methods:

    • Utilizing a supersymmetry-inspired framework to engineer the optical system's properties.
    • Modulating opto-geometric parameters to selectively decrease the lifetimes of unwanted modes.
    • Analyzing mode lifetimes and their relative differences within one- and two-dimensional coupled arrays.

    Main Results:

    • Demonstrated a 10-fold increase in the relative lifetime of fundamental modes in large one-dimensional coupled arrays compared to standard coupling.
    • Successfully suppressed unwanted super-modes by selectively reducing their lifetimes.
    • Showcased the capability to select multiple supported modes in both one- and two-dimensional array configurations.

    Conclusions:

    • The proposed supersymmetry-based method offers an effective strategy for controlling mode selectivity in coupled optical systems.
    • This technique provides a pathway to optimize the design of photonic devices for robust single-mode operation.
    • The findings have implications for advanced optical communication, sensing, and laser technologies.