光纤法布里-珀罗干涉式应变的测量  

THE OPTICAL FIBER F-P INTERFEROMETRIC STRAIN MEASUREMENT

作　　者：毕卫红[1] 郑绳楦[1] 

机构地区：[1]秦皇岛燕山大学光电子工程系,066004

出　　处：《光子学报》1999年第6期542-545,共4页Acta Photonica Sinica

摘　　要：本文采用在一段单模光纤两端镀膜的方法构成不对称光纤法布里-珀罗干涉腔，导出此干涉腔反射光的数学模型，给出干涉腔与光纤连接构成干涉式光纤应变传感器的一般理论和测量方法．文中传感器采用低反射率的法布里一纳罗腔以改善光纤应变传感器的线性．输入、输出在同一侧便于使用；与电阻应变传感器相比精度高、适用范围广．In this paper,the intrinsic F-P cavity is used for fiber-optical sensor to measure the strain.The general formulas of the fiber-optical F-P cave and fiber-optic longitudinal stress-strain effect arederived. The general theory and measurement method of strain is presented. The low fineness F-P caveis used to ameliorate the linear of optical fiber strain sensor;The input and 0utput signa1s are on thesame side,which make the sensor easy application actually. The result of experiment agress with thetheory.

关 键 词：光纤 应变测量 传感器 F-P干涉式 

分 类 号：O348.1[理学—固体力学]