无源式光纤光栅空、时分复合复用传感系统  

Passive Fiber Bragg Grating Sensor System Using Combined Spatial-and Time-Division Multiplexing Technique

作　　者：余有龙[1] 谭华耀[2] 王骐[1] 

机构地区：[1]哈尔滨工业大学光电子技术研究所 [2]香港理工大学电机工程系

出　　处：《光学学报》2001年第11期1313-1315,共3页Acta Optica Sinica

基　　金：香港研究资助局 (RGC)资助课题 (Polyu 5 12 3/ 97E)

摘　　要：受 1× 3光开关控制 ,脉冲宽带光波被导入 3× 5光栅传感器阵列中待查询的任一光栅串 ,根据传感元间光纤延时程度的不同 ,利用电子程控开关 ,对来自不同光栅信号的选择通导 ,借助非平衡迈克耳孙扫描干涉仪对传感信息进行解调 ,成功地实现了空。Controlled by an 1×3 optical switch, light from a pulsed broadband source was launched into one of 3 independent strings of 5 FBG sensors. By introducing suitable length of fiber as time delay between adjacent two gratings in the same string, the return signals can be selected by a programmable electric switch. Demodulation was achieved by using an unbalance Michelson scanning interferometer. Combined spatial-and time-division multiplexing operation was demonstrated successfully.

关 键 词：光纤光栅 传感网络 时分复用 空分复用 复合复用 传感 干涉解调 

分 类 号：TN25[电子电信—物理电子学] TN914