高精度温度补偿纤维布拉格格格轴应变传感系统基于双循环光电子振荡器,增强了维尼尔效应
Applied optics
|September 14, 2023
概括
一种新的双循环光电子振荡器 (OEO) 增强了维尼尔效应,用于精确的纤维布拉格格 (FBG) 轴应变传感. 这种传感器准确地测量了应变,并补偿了温度,改进了单环设计.
科学领域:
- 光子学和光学传感器
- 光纤传感器 光纤传感器
- 光电学是指光电子产品.
背景情况:
- 纤维布拉格格 (FBGs) 广泛用于感知轴向应变和温度.
- 应变和温度之间的交叉敏感性是基于FBG的传感器的一个重大挑战.
- 光电子振荡器 (OEO) 为FBG询问提供了高灵敏度.
研究的目的:
- 提出和演示一个温度补偿的FBG轴应变传感器.
- 为了提高基于FBG的菌株测量的灵敏度和准确性.
- 为了利用弗尼耶效应提高传感器性能.
主要方法:
- 使用双循环光电子振荡器 (OEO) 配置.
- 使用级联FBG:一个传感FBG和一个参考FBG.
- 实现一个增强的维尼尔效应使用光学路径与相反的分散和不同的长度.
- 采用波长和频率分割多重复合用于信号处理.
主要成果:
- 双循环OEO表现出与单循环OEO相比显著更高的灵敏度.
- 实现了0.112με的最大轴向应变测量误差.
- 达到最大温度补偿误差低至0.024°C.
- 增强的维尼尔效应提高了灵敏度,降低了温度交叉灵敏度.
结论:
- 拟议的双循环OEO与增强的维尼尔效应提供了一个强大的解决方案,用于准确的轴向应变传感.
- 传感器有效地弥补温度变化,这对于可靠的测量至关重要.
- 这种方法为高精度光纤传感应用提供了显著的进步.
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