考虑振动和温度影响的光纤传感器设计研究  

Research on the design of optical fiber sensor considering the influence of vibration and temperature

作　　者：张晶 吴艳茹 杨海波 ZHANG Jing;WU Yanru;YANG Haibo(School of Medical Imaging,Hebei Medical University,Shijiazhuang 050031,China)

机构地区：[1]河北医科大学医学影像学院,石家庄050031

出　　处：《激光杂志》2021年第9期150-154,共5页Laser Journal

基　　金：河北省教育厅课题(No.2018GJJG147);河北省高等教育学会研究课题(No.GJXH2019-159)。

摘　　要：为避免振动波及温度反应对光纤传输信号造成的影响,延长光纤传感器的实际使用寿命,研究考虑振动和温度影响的光纤传感器设计方案。利用F-P反射腔限制光波动信号的传输行为,再借助多模光纤端面小孔,疏导光纤测量设备中的物理压力量,实现光纤传感器的主要测量仪器连接。在此基础上,建立振动波方程式,通过光纤温度场模式、三层圆波导光磁场模式两种光波传输行为,分析基于振动和温度影响的光应用性能,实现对光纤传感器设备结构体的研究。对比实验结果显示,与干涉型传感元件相比,新型光纤传感器可在高温、高振动环境下,保持长时间的稳定连接状态,符合延长光纤传感器使用寿命的实际应用需求。In order to avoid the influence of vibration and temperature response on optical fiber transmission signal and extend the actual service life of optical fiber sensor,the design scheme of optical fiber sensor considering the influence of vibration and temperature is studied. The f-P reflection cavity is used to limit the transmission behavior of light wave signal,and the multi-mode fiber end face hole is used to guide the physical pressure force in the fiber measurement equipment,so as to realize the connection of the main measurement instruments of the fiber sensor. On this basis,the vibration wave equation is established,and the optical application performance based on vibration and temperature is analyzed through optical fiber temperature field mode and three-layer circular waveguide optical magnetic field mode,so as to realize the research on the structure of optical fiber sensor equipment. The experimental results show that compared with interference-type sensor,the new optical fiber sensor can maintain stable connection state for a long time under the environment of high temperature and high vibration,which meets the practical application demand of prolonging the service life of optical fiber sensor.

关 键 词：光纤传感器 F-P反射腔 多模光纤端面 光纤压力 振动波方程 温度场模式 三层圆波导 光磁场模式 

分 类 号：TN929[电子电信—通信与信息系统]