高分辨率单信道输出的光纤光栅传感系统时域地址查询技术  

Time-Domain Addressing Technique for a Single Channel Output and High-ResolutionFiber Bragg Grating Sensor System

作　　者：余有龙[1] 谭华耀[1] 何海律[1] 锺永康[1] 

机构地区：[1]香港理工大学电机工程系

出　　处：《光学学报》2001年第7期874-877,共4页Acta Optica Sinica

基　　金：香港研究资助局 (RGC)资助项目 (Polyu5 12 3 97E)

摘　　要：脉冲宽带光源发出的光波进入 4个光栅组成的光栅串时 ,根据传感元间光纤延时程度的差别进行时域地址查询 ,借助非平衡迈克耳孙 (Michelson)扫描干涉仪对传感信息进行解调 ,系统的应变传感分辨率为 6nε ,而灵敏度的实验值为 1 6 3° με。A technique of time-domain addressing is introduced to interrogate a four-element fiber Bragg grating sensor array. The sensor elements with different fiber delays were illumined with a pulsed broad-band source. Demodulation was achieved with an unbalance Michelson scanning interferometer. The single-channel output sensor system, which is with a sensing resolution of 6 nΕ, is demonstrated with a sensitivity of 1.63 °/μΕ.

关 键 词：光纤光栅 传感网络 时域地址查询 干涉解调 单信道输出 

分 类 号：TN253[电子电信—物理电子学]