摘要
通过微波电光调制和光纤光栅滤波产生连续泵浦光信号,声光调制产生脉冲信号,设计了一个基于布里渊光时域分析(BOTDA)技术的单端光纤传感系统。该系统通过扫描微波频率实现布里渊谱的测量,进而获得传感光纤上温度和应变的数据。对系统空间分辨率、测量时间等性能进行了分析,并对布里渊信号进行了仿真。
A single-ended fiber sensing system based on Brillouin optical time domain analysis（BOTDA） sensing technology is designed,in which the CW pump light is generated by microwave electro-optical modulation and fiber grating filtering,and the pulse light is produced by acousto optic modulation.The measurement of Brillouin spectrum is achieved by scanning the microwave frequency,then the data of temperature and strain distribution along an optical fiber are measured.Finally,the performance of the system,such as spatial resolution,measurement time,are analyzed,and the Brillouin signal is simulated.
出处
《光纤与电缆及其应用技术》
2010年第1期34-37,共4页
Optical Fiber & Electric Cable and Their Applications
基金
国家863计划资助项目(2006AA09Z141)
