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    Area of Science:

    • Photonics and Optical Engineering
    • Integrated Optics
    • Semiconductor Devices

    Background:

    • Optical power splitters are fundamental components in photonic integrated circuits.
    • Antiresonant reflecting optical waveguides (ARROW) offer a promising platform for compact and efficient optical devices.
    • Silicon photonics enables the integration of optical functions onto silicon chips.

    Purpose of the Study:

    • To design and realize silicon-based dual ARROW power splitters.
    • To investigate the impact of coupling region length on device performance.
    • To characterize the optical performance, including propagation loss and power imbalance.

    Main Methods:

    • Design of dual ARROW structures with a 30 μm remote coupling separation.
    • Fabrication of power splitters with varying coupling region lengths.
    • Optical characterization of fabricated devices to measure propagation losses and power imbalances.

    Main Results:

    • Successfully designed and realized dual ARROW power splitters on a silicon platform.
    • Achieved propagation losses below 1.90 dB/cm.
    • Demonstrated power imbalances lower than 0.60 dB.

    Conclusions:

    • Dual ARROW power splitters can be efficiently realized using silicon photonics.
    • The fabricated devices exhibit excellent performance metrics suitable for integrated optics.
    • This work contributes to the advancement of efficient optical power management in Si-based photonic circuits.