基于外差解调的分布式光纤传感系统设计

Design of Distributed Optical Fiber Sensing System Based on Heterodyne Demodulation

摘要:

提出了一种基于双脉冲外差解调的分布式光纤传感系统。从理论上分析了系统的传感原理及信号解调方法。根据系统结构及原理,搭建了双脉冲外差分布式光纤传感实验系统,并进行了初步的实验研究。实验结果表明,在传感距离为300m的情况下可以将末端施加的干扰信号解调出来。 更多还原

Abstract:

A distributed optical fiber sensor system based on heterodyne demodulation of dual pulses is proposed. The theory of sensing and demodulation is analyzed theoretically. According to the structure and theory, the system was constructed and the preliminary experiments were implemented. The results insult that the vibration signal at the end of the sensing fiber which is 300m long can be demodulated efficiently.