一种新颖的高压光纤布拉格光栅传感器  

A Novel FBG Pressure Sensor for High Pressure

作　　者：刘钦朋[1] 乔学光[1] 贾振安[1] 李婷[1] 王向宇[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

出　　处：《光电子．激光》2007年第11期1293-1295,共3页Journal of Optoelectronics·Laser

基　　金：国家"863"高技术研究发展计划资助项目(2002AA313150);国家自然科学基金资助项目(69877025);国家教育部科学技术重点资助项目(02190);陕西省教育厅产业化培育资助项目(05J(23));西安市科技局信息技术专项资助项目(ZX05041);中国石油天然气集团公司应用基础研究资助项目(20050719)

摘　　要：提出了一种新颖耐高压的光纤布拉格光栅（FBG）压强传感器。推导了该压强传感器的FBG中心波长与压强的关系，得到了其压强响应灵敏度的解析表达。从实验获得该压强传感器的压强响应灵敏度为0．0592nm／MPa，是裸FBG压强传感器的19．73倍；在0～45MPa内，该传感器的压强响应具有很好的线性和重复性，实验值与理论值吻合得很好，且压强响应灵敏度和测量范围是可调的。A novel fiber Bragg grating sensor for high pressure is proposed. The relationship between the central wavelength of FBG and the pressure is deduced,and the analytical formula of pressure sensitivity is also derived. From the result of ex periment,the pressure sensitivity is derived,which is 19.73 times than that of the bare FBG. From 0 MPa to 45 MPa,the fi-her Bragg grating sensor has good linearity and repetition,the experimental results agree with the theoretical one. It is also indicated that the pressure sensitivity and range of measure are tunable.

关 键 词：光纤布拉格光栅(FBG) 压力传感 压强灵敏度 

分 类 号：TN253[电子电信—物理电子学]