高灵敏的OPD-demodulated纤维温度传感器基于一个超长的液体芯,注射器形状
Optics letters
|February 1, 2024
概括
一种新的光纤温度传感器使用液核法布里-佩罗干扰仪进行高度敏感的测量. 这种创新的设计实现了50.93微米/°C的温度灵敏度,显著优于现有的传感器.
科学领域:
- 光纤传感传感器是指光纤传感器.
- 干涉测量是干涉测量的方法.
- 测量温度的测量方法
背景情况:
- 费布里-佩罗特干扰仪用于传感应用.
- 液芯光纤具有独特的传感性能.
- 高热膨胀材料对于敏感的温度检测至关重要.
研究的目的:
- 提出和演示一种新的光路差 (OPD) 解调光纤温度传感器.
- 为了利用液芯法布里-佩罗干扰仪提高温度灵敏度.
- 调查液芯长度和几何形状对传感器性能的影响.
主要方法:
- 在空心纤维中使用香柏油制造液芯纤维传感器.
- 使用香柏油的热膨胀系数 (TEC) 来进行温度传感.
- 采用内部灌入方法,使用超细针来增加液体核心的长度.
- 对于温度灵敏度的OPD解调的理论分析.
主要成果:
- 实现了异常高的OPD灵敏度,达到50.93μm/°C.
- 比大多数报告的传感器高出三倍的灵敏度.
- 确认灵敏度与液芯长度成比例,并因注射器形状而放大.
- 由于没有残余应力,观察到出色的重复性和稳定性.
结论:
- 拟议的液体核心光纤温度传感器提供了前所未有的灵敏度.
- 该设计采用香柏油和类似注射器的结构,显著提高了温度测量能力.
- 这种传感器代表了高灵敏度,稳定和可重复的光纤温度计的突破.
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