基于辅助干扰仪的光纤光学干扰仪中光学路径差异的实时测量和不确定性评估
Huicong Li1,2, Minggan Lou1,2, Wenzhu Huang1,2
1State Key Laboratory of Transducer Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
Sensors (Basel, Switzerland)
|April 13, 2024
概括
在干扰仪中实时测量光路径差异 (OPD) 对系统的一致性至关重要. 这项研究评估了辅助干扰仪校准方法,发现它是一个显著的不确定性来源,但高精度校准提高了像振动传感等应用的准确性.
科学领域:
- 光学物理学的光学物理.
- 计量学 计量学 计量学
- 干涉测量是干涉测量的方法.
背景情况:
- 光学干扰仪对于传感和测量至关重要.
- 实时光学路径差异 (OPD) 测量和不确定性评估对于系统优化至关重要.
- 现有的方法缺乏对辅助干扰仪校准对OPD测量不确定性影响的全面分析.
研究的目的:
- 通过波长调制实现主干扰仪的实时OPD测量.
- 为了评估主要干扰仪的OPD的测量不确定性.
- 评估不同辅助干扰仪校准方法对OPD测量精度的影响.
主要方法:
- 作为主要的干扰仪,采用了同质四度激光干扰仪 (HQLI).
- 作为辅助干扰仪使用了3x3干扰仪.
- 使用光学光谱分析仪扫描与绳子测量对比辅助干扰仪校准.
主要成果:
- 辅助干扰仪被确定为测量不确定性的最重要来源.
- 总不确定性随着OPD的增加而线性增加.
- 高精度校准和大型OPD辅助干扰仪提高了实时OPD测量精度.
结论:
- 辅助干扰仪的校准显著影响OPD测量不确定性.
- 优化辅助干扰仪校准是最大限度地减少系统噪声和确保一致性的关键.
- 拟议的方案可用于需要~m级OPD的应用,如振动,水声和磁场传感等,实现准确的OPD测量.
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