Distributed Optical Fiber Stress Sensor System for Landslides Monitoring Based on OTDR

摘要：

A distributed optical fiber stress sensor system for landslides monitoring based on OTDR was presented. The stress sensing principle of single mode optical fiber with the coaction of circular elastic diaphragm and microbending modulation structure was described in detail. The stress demodulation method which could decrease the influence of light source fluctuation and environmental factors was investigated. The monitoring system was designed and the field test results showed that the distributed optical fiber stress sensor has characteristic of high sensitivity and space resolution, and it could be used as an early warning monitoring system for landslides effectively.

关键词： Optical fiber stress sensor Landslides monitoring OTDR Microbending modulation

作者: Zhonghua Ou Lixun Zhang Zhiyong Dai Yongzhi Liu Ce Zhou

作者单位: School of Opto-Electronic Information University of Electronic Science and Technology of China (UEST Exploration Engineering Institute CAGS Chengdu, 610081, China

会议类型: 国际会议

会议名称: 2010 International Asia Conference on Optical Instrument and Measurement(2010年IEEE光学仪器与测量国际会议 ACPIM 2010)

会议地点: 深圳

会议语种:英文

页码: 85-88

在线出版日期: 2010-11-20（万方平台首次上网日期，不代表论文的发表时间）