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相关概念视频

Properties of Fourier Transform II01:24

Properties of Fourier Transform II

156
The Fourier Transform (FT) is an essential mathematical tool in signal processing, transforming a time-domain signal into its frequency-domain representation. This transformation elucidates the relationship between time and frequency domains through several properties, each revealing unique aspects of signal behavior.
The Frequency Shifting property of Fourier Transforms highlights that a shift in the frequency domain corresponds to a phase shift in the time domain. Mathematically, if x(t) has...
156
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

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Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
75
Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

3.3K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
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相关实验视频

Updated: May 28, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

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在芯片上的双向光学频率转换器用于光学频率传输.

Ziang Qiu, Zijie Zhou, Hanzhao Zhong

    Optics letters
    |February 14, 2025
    PubMed
    概括

    我们为光学频率转移 (OFT) 系统开发了一种芯片上的双向频率转移装置 (BFSD). 该设备实现了高效率和抑制,使基于芯片的OFT网络成为可能.

    科学领域:

    • 光子学和光学工程 光子学和光学工程
    • 集成光学 集成光学 集成光学
    • 量子计量学 量子计量学

    背景情况:

    • 光学频率传输 (OFT) 对高精度计时和传感至关重要.
    • 现有的OFT系统通常依赖于重和复杂的组件.
    • 微型化,芯片上解决方案的开发是非常理想的.

    研究的目的:

    • 实现芯片上的双向频率转移装置 (BFSD).
    • 为了证明其在光学频率传输 (OFT) 系统中的应用.
    • 为了实现基于芯片的OFT网络的构建.

    主要方法:

    • 在绝缘体 (LNOI) 平台上使用薄膜酸制造BFSD.
    • 使用两个级联移动波相调节器 (PMs).
    • 应用serrodyne调制用于双向频率转移.

    主要成果:

    • 实现了超过98.8%的频率转换效率.
    • 证明载波抑制 (CSR) 为 42 dB,侧带抑制比 (SSR) 为 31 dB.
    • 在基于BFSD的OFT系统中验证了理论阶段噪声抑制能力.

    更多相关视频

    Quasi-light Storage for Optical Data Packets
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    Published on: February 6, 2014

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    Fabrication and Testing of Microfluidic Optomechanical Oscillators
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    Fabrication and Testing of Microfluidic Optomechanical Oscillators

    Published on: May 29, 2014

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    相关实验视频

    Last Updated: May 28, 2025

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
    09:43

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

    Published on: March 20, 2017

    9.8K
    Quasi-light Storage for Optical Data Packets
    07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

    10.8K
    Fabrication and Testing of Microfluidic Optomechanical Oscillators
    09:10

    Fabrication and Testing of Microfluidic Optomechanical Oscillators

    Published on: May 29, 2014

    12.1K

    结论:

    • 开发的BFSD适用于OFT应用程序.
    • 在LNOI平台使高效和紧的设备制造.
    • 这项技术为基于芯片的光学频率传输网络铺平了道路.