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宽带频率调制信号下调转换使用单体集成的相互注射激光.

Shilin Chen, Tao Pu, Jilin Zheng

    Applied optics
    |September 14, 2023
    PubMed
    概括

    本研究介绍了一种使用单体集成激光的新型宽带信号下调转换方法. 这种技术使得无需外部组件的雷达信号处理具有广泛的调范围.

    科学领域:

    • 光子学 是一个光子学.
    • 电气工程 电气工程
    • 信号处理 信号处理

    背景情况:

    • 传统的信号向下转换方法通常需要庞大的离散组件,包括局部振荡器和外部调制器.
    • 实现宽带信号处理与广泛的调范围提出了重大工程挑战.

    研究的目的:

    • 提出和验证一个新的宽带信号下调转换方案.
    • 通过使用单体集成的相互注射激光来演示可调节的下调转换范围.
    • 为雷达信号处理提供一个紧而高效的替代方案.

    主要方法:

    • 拟议方案的数学推导和模拟.
    • 使用单体集成互注激光器进行实验验证.
    • 下降转换范围和无假动态范围 (SFDR) 的表征.

    主要成果:

    • 成功下调宽带信号,转换了带宽为0.5GHz的线性频率调制信号.
    • 从中心频率18.75 GHz到0.85 GHz实现了下调转换.
    • 证明了无假动态范围 (SFDR) 的71.7dB/Hz^2/3).

    结论:

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  • 单体集成的相互注射激光器通过控制激光电流,可以实现广泛的可调下转换范围.
  • 拟议的方案消除了对外部电局部振荡器和调制器的需求,简化了雷达系统.
  • 这种综合方法为高效的雷达信号向下转换提供了一个有前途的方法.