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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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稀缺的二维光学相位阵列,具有基于无周期性网格的大型格子无叶片方向盘范围.

Qikai Huang, Hui Yu, Zhaoyang Zhang

    Optics letters
    |June 1, 2023
    PubMed
    概括

    这项研究介绍了一种新的128通道2D光学相位阵列 (OPA),使用无周期电网和稀疏天线分布. 这种设计显著提高了光束转向范围和光学相位阵列的视野.

    科学领域:

    • 光子学和光学工程 光子学和光学工程
    • 天线阵列设计设计
    • 超材料和纳米光子学

    背景情况:

    • 二维光学分相阵列 (2D OPA) 通常面临着光束扫描范围和光圈大小的限制.
    • 现有的OPA设计往往需要大量的元素,增加复杂性和成本.

    研究的目的:

    • 通过提高扫描范围和减少元素数量来克服传统2D OPAs的局限性.
    • 开发一个稀疏的2D OPA,并改进了性能指标.

    主要方法:

    • 利用一个无周期的32x32网格来扩大光束扫描能力.
    • 实现了128个网格天线在1024个网格点的稀疏分布,以减少阵列大小.
    • 采用遗传算法优化网格间距和天线分布.

    主要成果:

    • 在1550公里海域实现了53°x16°的无格子叶方向盘范围.
    • 展示了24°x16°的视野.
    • 报告的光束分歧为0.31°x0.49°,侧叶抑制比为9dB.

    结论:

    • 拟议的无周期和稀疏天线分布有效地提高了2D OPAs的性能.

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  • 这种方法提供了一个有前途的解决方案,用于应用程序需要广角光束转向与减少复杂性.