光通信技术2026，Vol.50Issue(3)：71-77,7.DOI:10.13921/j.cnki.issn1002-5561.2026.03.012
用于滑动轴承油膜温度压力检测的光纤EFPI-FBG复合传感器
Optical fiber EFPI-FBG hybrid sensor for oil film temperature and pressure detection in sliding bearings
摘要
Abstract
To measure the oil film temperature and pressure in a sliding bearing,a hybrid sensor integrating an optical fiber ex-trinsic Fabry-Perot interferometer(EFPI)and a fiber Bragg grating(FBG)is designed.The sensor consists of an FBG and a microbubble-based FP cavity.The microbubble FP cavity is fabricated by etching a multimode optical fiber followed by elec-tric arc discharge,and then coated with nickel via electroless plating.Temperature and pressure calibration setups are used to conduct calibration experiments on the hybrid sensor.The experimental results show that within the pressure range of 0～10 MPa,the pressure sensitivities of the FBG center wavelength and the FP cavity length are-3.24 pm/MPa and-7.23 nm/MPa,respectively,with both linear correlation coefficients exceeding 0.99.Meanwhile,within the temperature range of-40～120 ℃,the temperature sensitivities of the FBG center wavelength and the FP cavity length are 10.35 pm/℃ and 0.2941 nm/℃,demon-strating a significant temperature compensation effect.关键词
滑动轴承/油膜/温度/压力/光纤光栅/光纤法布里-珀罗腔Key words
sliding bearing/oil film/temperature/pressure/fiber grating/fiber Fabry-Perot cavity分类
信息技术与安全科学引用本文复制引用
赵向荣,李瑞亚,韩乐强,谭跃刚..用于滑动轴承油膜温度压力检测的光纤EFPI-FBG复合传感器[J].光通信技术,2026,50(3):71-77,7.基金项目
国家自然科学基金项目(51475343)资助. （51475343）
