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相关概念视频

Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

406
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
406

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相关实验视频

Updated: Jul 5, 2025

Implementation of a Reference Interferometer for Nanodetection
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低一致性同质干扰仪用于亚兆赫的光纤光学传感器读取输出.

Petr Volkov1, Andrey Lukyanov1, Alexander Goryunov1

  • 1The Institute for Physics of Microstructures RAS, Academicheskaya Str. 7, Nizhny Novgorod 603087, Russia.

Sensors (Basel, Switzerland)
|January 23, 2024
PubMed
概括

这项研究引入了一种新的光纤传感器读数方法,使用主动同体解调和低连贯干涉计. 该技术实现了高灵敏度和稳定性,用于精确的声信号检测.

科学领域:

  • 光电子和传感器技术
  • 干涉测量是干涉测量的方法.
  • 光纤光学是指光纤的使用.

背景情况:

  • 介面计光纤传感器具有高灵敏度,但在调节稳定性和带宽方面经常面临挑战.
  • 活跃的同源解调和低相干干涉测是已建立的技术,在信号处理方面具有明显的优势.

研究的目的:

  • 开发用于干扰度光纤光学传感器的先进读取方法.
  • 通过将主动同源解调与低连贯性干涉测量集成来提高传感器性能.
  • 在传感器测量中实现高灵敏度,稳定性和宽频带.

主要方法:

  • 一个双联低连贯干扰仪被用来调节独立于传感元件的参考干扰仪.
  • 积极的同源解调被用于信号处理.
  • 一个纤维迈克尔森干扰仪作为声信号检测的传感元件.

主要成果:

  • 拟议的方法显示出高灵敏度,达到高达0.1nm (RMS).
  • 该系统在测量过程中保持了高稳定性.
  • 实现了宽频带能力,在5kHz范围内证明了这一点.
  • 声信号的成功检测得到证实.
关键词:
光纤传感器是光纤传感器.均质的解调是同质的.低连贯性干涉测量低连贯性干涉测量

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相关实验视频

Last Updated: Jul 5, 2025

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A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
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结论:

  • 活跃的同源解调和低连贯性干扰的集成为光纤传感器读数提供了一个强大的方法.
  • 该技术显著提高了灵敏度,稳定性和操作带宽.
  • 这种方法对于使用光纤传感器精确检测声信号是有效的.