一种用于地震波测试的光纤位移传感器  

New Type of Fiber Optic Displacement Seismometer

作　　者：吴东方[1] 贾波[1] 

机构地区：[1]复旦大学光纤研究中心,上海200433

出　　处：《传感技术学报》2006年第6期2408-2410,共3页Chinese Journal of Sensors and Actuators

基　　金：复旦大学研究生创新基金资助(CQH2021005)

摘　　要：提出一种使用GRIN透镜和菱形光阑构成的光强度调制的地震波垂直位移测量原理.对系统的输出光强与位移之间的耦合关系进行了分析计算以及仿真.该系统具有结构简单、动态范围好、灵敏度可调、抗电磁干扰等特点.并与常规磁电式的地震检波器在线测试比较,得到了比较满意的结果.A new type of displacement seismometer based on the principle of collimated beam transmission intensity modulation is presented, which is mainly composed of graded-index lenses and some kind of rhombic diaphragm. An artificial calculation shows that the displacement seismometer has good flexibility in measurement range and sensitivity through adjusting the configuration parameters. The final experimental results indicate that the displacement seismometer functions well as compared to that of the traditional magnetoelectric seismometer.

关 键 词：光纤 地震波 位移 光强 GRIN透镜 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]