基于Fabry-Perot干扰仪的温度补偿高应变测量与虚拟辅助的维尼尔效应
Applied optics
|June 10, 2024
概括
这项研究引入了一种高度灵敏的光纤Fabry-Perot干扰仪 (FPI),用于精确的应变测量. 它通过使用虚拟FPI和纤维布拉格格 (FBG) 来实现增强的灵敏度和温度补偿,以获得准确的读数.
科学领域:
- 光电学是指光电子产品.
- 光纤传感器 光纤传感器
- 干涉测量是干涉测量的方法.
背景情况:
- 光纤传感器为测量物理参数提供高灵敏度.
- 法布里-佩罗干扰仪 (FPI) 广泛使用,但可能会受到温度交叉敏感性的影响.
- 现有的温度补偿方法可能很复杂或降低灵敏度.
研究的目的:
- 提出一种新的,高度灵敏的光纤法布里-佩罗干扰仪 (FPI) 用于应变测量.
- 在没有外部参考干扰仪的情况下实现有效的温度补偿.
- 为了提高使用维尼尔效应的应变测量灵敏度.
主要方法:
- 虚拟FPI与传感FPI叠加在一起,以创建维尼尔效应.
- 通过调整虚拟FPI参数,利用基本和第一阶和的维尼尔效应.
- 一个纤维布拉格格 (FBG) 是级联的,用于区分和补偿温度效应.
- 使用交叉灵敏度矩阵将压力与温度脱.
主要成果:
- 基本的维尼尔效应增加了FPI对温度的敏感性,从1.05到10.63pm/°C (40-120°C).
- 应变灵敏度从2.635提高到33.11 pm/με (0-400 με) 具有基本的维尼尔效应.
- 第一阶波维尼尔效应的温度和应变灵敏度分别为21.25 pm/°C和62.25 pm/με.
- 使用FBG和交叉敏感度矩阵证明了精确的菌株与温度的分离.
结论:
- 拟议的带有弗尼耶效应和FBG的FPI提供了高度敏感和温度补偿的应变测量解决方案.
- 虚拟FPI方法有效地提高了灵敏度,并简化了系统架构.
- 这种方法提供了一种可靠的方法,用于在各种环境中准确监测菌株.
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