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Design of an arbitrary ratio optical power splitter based on a discrete differential multiobjective evolutionary

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    A novel discrete differential evolution algorithm designs ultracompact photonic splitters. This nanophotonic computing approach achieves over 90% transmission efficiency and precise power splitting for integrated devices.

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    Area of Science:

    • Photonics
    • Nanophotonics
    • Integrated Optics

    Background:

    • Traditional photonic integrated device design faces challenges in optimizing all performance aspects simultaneously.
    • Nanophotonic computing, utilizing optimization algorithms, offers a revolutionary approach to device design.

    Purpose of the Study:

    • To develop an ultracompact arbitrary power ratio splitter using an optimization algorithm.
    • To demonstrate the efficacy of a discrete differential evolution algorithm in photonic device design.

    Main Methods:

    • Implementation of a discrete differential evolution algorithm, mimicking natural selection.
    • Simulation of an arbitrary power ratio splitter with a minimal footprint.

    Main Results:

    • Designed splitter boasts an ultracompact footprint of 2.5µm x 2.5µm.
    • Achieved simulated total transmission efficiency exceeding 90%.
    • Power ratio error was maintained below 3% across the C-band.

    Conclusions:

    • The discrete differential evolution algorithm enables the design of high-performance, ultracompact photonic devices.
    • This method provides a new paradigm for the automatic optimization of photonic integrated devices using genetic algorithms.