一种K型侧孔偏振维护纤维的表征,用于同时分布式压力和温度传感
Optics express
|February 20, 2026
概括
这项研究引入了一种新的光纤传感器,用于同时测量水静压和温度. 这一突破使在具有挑战性的环境中实现了准确的分布式传感,这对于能源和基础设施监测至关重要.
科学领域:
- 光电子学和光子学
- 光纤传感技术是指光纤传感技术.
- 材料科学用于传感器.
背景情况:
- 分布式传感需要强大的方法来进行多参数测量.
- 现有的光纤传感器难以同时辨别压力和温度.
- 保持偏振的纤维是敏感光学测量的关键.
研究的目的:
- 开发一种保持偏振的K型侧孔纤维 (SHF),用于同时分布式压力和温度传感.
- 优化SHF设计,以实现高差压灵敏度和稳定的极化.
- 用光学频域反射计 (OFDR) 证明压力和温度效应的准确解.
主要方法:
- 使用了一种新的K型侧孔纤维,具有特定的圆核心方向.
- 采用光学频域反射计 (OFDR),利用雷利反射散射.
- 开发了一种用于光谱转移分析和参数解的双通道多项式模型.
主要成果:
- 在直角偏振模式之间实现了创纪录的高分压灵敏度 (-1.9 GHz/MPa和0.7 GHz/MPa).
- 在整个压力范围内证明了稳定的两极分离,防止了补偿.
- 成功地进行了压力和温度的同时分布式测量,精度为~0.1°C和~0.1 MPa.
结论:
- 开发的SHF传感器使得第一个基于雷利的分布式同时压力和温度测量成为可能.
- 传感器具有高压敏度,热稳定性和偏振选择性,可靠运行.
- 这项技术推进了多参数光纤传感,用于储能,石油/天然气和结构健康监测的应用.
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