【摘要】 本文对已广泛应用于光纤通信或作为光纤传感系统中处理元件的 Y型单模熔锥光纤耦合器对应变的响应进行了研究 .在悬臂梁上进行的应变实验表明 ,该型耦合器的耦合比不但对应变敏感 ,而且有单调性 .其中 ,值得注意的是 Y型耦合器的应变响应灵敏度高于结构检测中常用的电阻应变片对应变的响应灵敏度更多还原

【Abstract】 In this paper,authors study the strain response of Y typed single mode fused optical fiber coupler used widely in optical communication,and used as the signal processing components in optical fiber sensing system.Measured in equi intensity cantilever,the result indicates that not only the coupling ratio of the coupler is sensitive to strain,but also the function is monotone.Thereinto,it is worth noting that the strain response sensitivity of Y type coupler is more sensitive than the strain response sensitivity of resistance,which has been used conventionally in structure measuring.更多还原