摘要
基于布里渊光时域反射(BOTDR)的分布式光纤传感器无论是在军用系统还是大型民用工程方面都具有广泛的应用前景。在给出BOTDR分布式光纤应力传感器的基本原理的基础上,详细介绍了国内外目前几种不同的BOTDR,并对其优劣进行了分析与比较。分析表明采用微波外差检测技术的BOTDR不仅具有较高的灵敏度,还具有更低的造价。
Distributed optic fiber sensors based on BOTDR will be widely used in military systems and large - scale civil projects. In this paper, the principle of BOTDR distributed optic fiber sensor is illustrated, and several different sensors using BOTDR are introduced in detail. At last the disadvantages and advantages are analyzed. The results show that BOTDR with microwave heteradyne detection has higher sensitivity and lower cost.
出处
《激光杂志》
CAS
CSCD
北大核心
2007年第4期4-5,共2页
Laser Journal
关键词
BOTDR
声光移频
电光移频
微波外差检测
BOTDR
acoustoootic frequencv translation
electro-optic frequency translation
microwave heterodvne detection