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相关概念视频

Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

89
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
89
Traveling Waves: Lossless Lines01:27

Traveling Waves: Lossless Lines

140
The provided content explores the behavior of traveling waves on single-phase lossless transmission lines. It begins with a single-phase two-wire lossless transmission line of length Δx, characterized by a loop inductance LH/m and a line-to-line capacitance C F/m. These parameters result in a series inductance LΔx  and a shunt capacitance CΔx.
140
Bewley Lattice Diagram01:12

Bewley Lattice Diagram

639
The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
639

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相关实验视频

Updated: Jul 1, 2025

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
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快速光学延迟线的非线性误差分析.

Lili Zhu, Junwen Xue, Jiaojiao Ren

    Applied optics
    |March 4, 2024
    PubMed
    概括

    开发了一种新的快旋光延迟线 (FRODL),用于太赫兹光谱和光连贯性断层扫描. 测试证实了它的高线性 (99.785%) 和精确的延迟时间能力,对于先进的光学测量至关重要.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 频谱学是一种光谱学.
    • 计量学 计量学 计量学

    背景情况:

    • 光延迟线是太赫兹时域光谱 (THz-TDS) 和光学连贯断层扫描 (OCT) 中的关键组成部分.
    • 准确和可调节的光学延迟对于这些领域的高分辨率测量至关重要.
    • 现有的延迟线技术可能面临速度,精度或距离的限制.

    研究的目的:

    • 设计和开发一条新的快旋转光学延迟线 (FRODL).
    • 建立一个数学模型来分析FRODL的延迟时间中的非线性参数错误.
    • 通过实验验证设计的FRODL的性能和准确性.

    主要方法:

    • 使用 24 个转盘反射面的 FRODL 的设计.
    • 开发一个数学模型来量化延迟时间中的非线性参数误差.
    • 构建一个极化迈克尔森干扰系统用于实验测试.
    • 精确测量组装参数,实际延迟时间和线性.

    主要成果:

    • 设计的FRODL具有24个反射面,用于快速光路调制.
    • 数学模型准确地预测了非线性参数错误.
    • 实验结果显示,实际组装参数误差约为0.015毫米.

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  • FRODL实现了超过43.5ps的实际延迟时间,其线性为99.785%.

    • 结论:

    • 开发的FRODL显示出高精度和线性,适合要求高的光学应用.
    • 数学模型为理解和减轻旋转延迟线上的错误提供了有价值的工具.
    • FRODL的表现证明了其在推进THz-TDS和OCT系统方面的潜力.