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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Universal dimension reduced phase compensation algorithm for an optical phased array.

Yanwei Huang, Kangzhe Wang, Qianying Yan

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    This study introduces a universal optimization algorithm to enhance optical phased array (OPA) performance by compensating for phase distortion. The new method improves deflection efficiency and is scalable for large, high-density OPAs.

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    Area of Science:

    • Photonics
    • Optical Engineering
    • Signal Processing

    Background:

    • Optical phased arrays (OPAs) enable non-mechanical beam steering.
    • Mutual coupling between channels in OPAs causes phase distortion, reducing deflection efficiency.

    Purpose of the Study:

    • To propose a universal optimization algorithm to compensate for phase distortion in OPAs.
    • To improve the deflection efficiency and scalability of OPAs.

    Main Methods:

    • Introduced adjacent sampling principal component analysis (AS-PCA) to reduce solution space dimensionality.
    • Developed a universal optimization algorithm for phase distortion compensation.

    Main Results:

    • Simulations and experiments confirmed significant optimization of deflection beams.
    • The method demonstrated rapid convergence and universal applicability across different OPA scales.
    • The algorithm maintained its universal feature, irrespective of OPA scale.

    Conclusions:

    • The proposed algorithm effectively compensates for structural phase distortion in OPAs.
    • This method lays the foundation for large-scale, high-density OPA in-line optimization.
    • The algorithm is envisioned as a general method applicable to various optical platforms.