中文摘要：

对基于M-Z干涉技术的光纤围栏系统进行了实验研究.讨论并分析了M-Z干涉技术在光纤围栏系统中的应用原理.利用M-Z干涉技术和互相关技术,在总计60 km的光纤上进行了单点和两点扰动的原理性实验.在采样速率为20 MHz时,理论上最高可达10 m的定位准确度.

英文摘要：

Fiber fence is a kind of distributed fiber sensing system. In this paper, the feasible techniques for fiber fence using M-Z interfero technique is discussed. A practical fiber fence system is builded and realized. The principle and structure and also the experimental results are presented and discussed. When set the AD convert speed as 20 MHz,the theoretic location accuracy of 10 m is achieved.