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相关概念视频

Energy Stored In A Coaxial Cable01:31

Energy Stored In A Coaxial Cable

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A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic...
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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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在多模纤维中测量和控制空间连贯性.

Jiaqi Li, Piotr Ryczkowski, Goëry Genty

    Optics express
    |August 13, 2025
    PubMed
    概括

    控制多模纤维的空间连贯性是先进传感和成像的关键. 这项研究使用干扰度量化了连贯性,并开发了量身定制的方法,通过模拟证实了这一点.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 光纤光学是指光纤的使用.
    • 一致性理论是一致性理论.

    背景情况:

    • 多模纤维提供可调节的空间连贯性,对于光学传感和成像等应用至关重要.
    • 了解和控制这些纤维的连贯性对于优化设备性能至关重要.

    研究的目的:

    • 测量和量化基于多模光纤的光源的空间连贯性.
    • 开发一种空间连贯性的定量控制方法.
    • 为需要量身定制的连贯性质的应用提供见解.

    主要方法:

    • 在多模光纤光源的全束光线中测量空间连贯性.
    • 利用波面折叠的干扰仪在不同的光路差异下生成干扰图.
    • 采用了数值模拟,使用线性偏振固态扩展和随机模态合模型进行验证.

    主要成果:

    • 通过分析边缘可见性,成功量化了跨多模光纤输出的整个光束的空间连贯度.
    • 开发并展示了一种空间连贯性的定量控制方法.
    • 实验发现被数值模拟证实.

    结论:

    • 该研究提供了一种强大的方法来测量和控制多模光纤光源中的空间连贯性.

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  • 开发的技术为传感,成像和其他需要精确控制光相干度的领域的应用提供了宝贵的见解.