白光干涉型EFPI光纤应变传感器理论模型的研究  

A Study on the Theoretical Model of White-Light Interfered EFPI Optical Fiber Strain Sensor

作　　者：江绍基[1] 曾斌[1] 汪河洲[1] 蔡志岗[1] 李宝军[1] 

机构地区：[1]中山大学光电材料与技术国家重点实验室,广州510275

出　　处：《传感技术学报》2005年第1期165-170,共6页Chinese Journal of Sensors and Actuators

基　　金：国家 86 3计划课题 (2 0 0 3AA3110 2 2 ) ;国家 973计划课题 (2 0 0 3CB314 90 1)资助项目 .

摘　　要：从光纤的耦合和多光束干涉的原理出发 ,建立了非本征型Fabry Perot干涉仪光纤应变传感器的模型 ,并对其理论模型进行了详细地推导 ,得到了白光光源下干涉型EFPI光纤应变传感器的理论计算公式。建立了传感器系统 ,用LED作为白光光源得到反射光谱。实验结果表明与理论模型数值模拟相一致 ,验证了理论模型的正确性。Based on the theory of optical fiber coupling and Fabry-Perot interference, a model of extrinsic Fabry-Perot interferometric (EFPI) optical fiber sensor for measuring strain is analyzed and the theoretical model is demonstrated, a formula of white light interfered EFPI optical fiber strain sensor is attained. The system of the optical fiber sensor is designed using LED source as light source to obtain reflected spectrum. The experimental results show that it is coincident well with the computational simulation of theoretical model, which means that the theoretical model is legitimacy.

关 键 词：光纤传感器 非本征型Fabry-Perot歼涉仪 应变 白光玕涉 光谱 

分 类 号：TN929.1[电子电信—通信与信息系统] TP212.1[电子电信—信息与通信工程]