摘要
基于马赫-曾德尔原理的光纤传感器广泛应用于管道的实时监测中,分析了此类光纤传感器的输出功率随入射光偏振态及光波在长距离光纤传输中偏振态变化的影响。通过Matlab仿真研究了分布式光纤传感系统的偏振衰落,论证了光波传输中的偏振衰落现象对输出条纹的可见度产生了很大的影响。提出了一种利用动态的偏振控制系统对光波偏振态进行控制从而减少偏振衰落的方法,并且展望了改进后的分布式光纤传感器在工业管道的探测领域中具有相当广阔的前景。
The fiber sensor based on Mach-Zehnder interferometer is widely used in pipelines real-time detection. The output power of fiber sensor which is changed with the polarization state of input light and polarization state changes during long transmission is analyzed. The polarization state fading of distributed fiber sensor system is studied by Matlab simulation. The polarization state fading of light transmission which causes great influence to interference fringe has been proved. A solution is also brought f...
出处
《红外与激光工程》
EI
CSCD
北大核心
2008年第S1期94-97,共4页
Infrared and Laser Engineering
关键词
光纤传感器
光纤双折射
偏振衰落
偏振控制器
Fiber sensor
Fiber birefringence
Polarization state fading
Polarization controller
