互补偿型光纤双向应变—位移点式传感器  

Point Sensor of Reciprocity-compensated Type Fiber-optic Bi-directional Strain-displacement

作　　者：李川[1] 吴晟[1] 李英娜[1] 刘建平[1] 龙昊波[1] 李俊[1] 

机构地区：[1]昆明理工大学信息工程和自动化学院,云南昆明65005

出　　处：《仪表技术与传感器》2004年第12期1-2,共2页Instrument Technique and Sensor

基　　金：云南省中青年学术与技术带头人后备人才项目 (2 0 0 3RC1 2 ) ;云南省自然科学基金项目 (2 0 0 2F0 0 0 4R)

摘　　要：在互补偿型光纤双向应变—位移传感器中 ,耦合器将光分束到粘贴于拉敏区或压敏区的两根光纤 ,且调制光由两探测器测量。通过引入拉敏光纤和压敏光纤的自相对损耗 ,可有效消除光纤应变—位移传感器中光源功率波动所引起的误差。微位移架上的位移实验表明标准误差是～ 0 16mm .In the reciprocity-compensated type fiber-optic bi-directional strain-displacement sensor,a coupler splits the light into the two fiber bonded in the tension or compression sections,and the modulated lights are measured by two detectors.By introducing the reciprocity-compensated parameter between the tension-sensitized fiber and the compensation-sensitized fiber,the error derived by the power fluctuate of optical source can be eliminate efficiently in the fiber-optic strain-displacement sensor.In the micro-displacement rack,the displacement experiment indicates that the standard error was ～0.16 mm.

关 键 词：光纤双向应变-位移传感器 弯曲损耗 自相对损耗 应变 位移 

分 类 号：TN929.11[电子电信—通信与信息系统]