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基于少数模式光纤模式干扰仪延迟线的分相阵列天线系统.

Shiming Wang, Wenqi Ma, Guijun Hu

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    这项研究引入了一条可连续调节的延迟线,用于使用少数模式光纤网格的相位阵列天线. 这一创新能够实现动态光束转向,克服光纤系统中离散调节方法的局限性.

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    科学领域:

    • 光子学和光学工程 光子学和光学工程
    • 光纤传感和通讯 传感和通讯

    背景情况:

    • 阶段阵列天线 (PAA) 系统通常使用少数模式纤维 (FMF) 与少数模式纤维网格 (FMFG) 进行延迟调,提供低功耗和紧的设计.
    • 目前基于FMFG的延迟调整机制受到离散调整的限制,阻碍了最佳性能.

    研究的目的:

    • 在基于FMFG的延迟线 (DL) 中证明可连续调节的延迟.
    • 建造和测试一台1x4PAA系统,使用新型DL用于动态光束转向.

    主要方法:

    • 使用几模光纤 (FMF) 模式干扰仪与几模长期光纤格子 (FM-LPFG) 的DL开发.
    • 实施了几模极化控制器 (FM-PC) 来动态调整LP01和LP11模式之间的合比,以实现连续延迟调整.
    • 延迟特征和错误源的分析,包括融合拼接侧核偏移和载波频率偏移.
    • 构建和实验验证一个1x4的PAA系统与制造DLs.

    主要成果:

    • 在基于FMFG的DL中首次展示了可连续调节的延迟.
    • 模拟和实验证实了连续延迟调整能力.
    • 分析了制造参数 (融合拼接侧核偏移) 和操作条件 (载波频率偏移) 对DL性能的影响.
    • 1x4 PAA 系统通过远场辐射模式测试,证明了非曲光束转向能力.

    结论:

    • 拟议的基于FM-LPFG和FM-PC的DL可实现连续延迟调节,克服离散FMFG系统的局限性.
    • 开发的PAA系统成功实现了动态的,不曲的梁方向.
    • 这项工作为更先进和更灵活的光纤控制分相阵天线系统铺平了道路.