一种复合式光纤光栅高压传感器的特性研究  

Study on pressure sensing characteristics of a compound FBG high pressure sensor

作　　者：李明[1] 吴海峰[1] 乔学光[2] 王宏亮[1] 王琳[1] 

机构地区：[1]西安石油大学,陕西省光电传感测井重点实验室,陕西西安710065 [2]西北大学,陕西西安710069

出　　处：《光电子．激光》2009年第6期730-732,共3页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60654001,60727004);国家“863”计划资助项目(2007AA03Z413,2006AA06Z210);西安市重大技术创新资助项目(GG06004)

摘　　要：提出了一种采用合金材料封装的耐高压光纤布拉格光栅(FBG)压力传感结构,从理论分析了FBG压力传感器的传感机理,实现了压强的0～20 MPa检测。对实验数据进行曲线拟合处理,线性拟合度达到了0.9996,压强响应灵敏度为12.1 pm/MPa,迟滞误差仅有0.185%,重复性误差也仅为0.020%。可实现温度补偿,并达到压力温度的同时区分测量。A fiber Bragg grating（FBG） pressure sensor is proposed based on alloy material packaging technology,and its sensing mechanism is analyzed.The pressure range of 0～20 MPa is tested.The experiment indicates that its linearity is 0.999 6 and pressure sensitivity is about 12.1 pm/Mpa,Hysteresis error is only 0.185 %,and the repeated error is only 0.020 %.This sensor can achieve temperature compensation and simultaneous discriminating measurement of temperature and pressure.

关 键 词：光纤布拉格光栅(FBG) 传感头 灵敏度 

分 类 号：TN253[电子电信—物理电子学]