Time-division multiplexing-based BOTDA over 100 km sensing length

被引：132
作者：
Dong, Yongkang [1 ]
Chen, Liang [1 ]
Bao, Xiaoyi [1 ]
机构：
[1] Univ Ottawa, Dept Phys, Fiber Opt Grp, Ottawa, ON K1N 6N5, Canada
来源：
OPTICS LETTERS | 2011年 / 36卷 / 02期
基金：
加拿大自然科学与工程研究理事会;
关键词：
SPATIAL-RESOLUTION; SENSOR; RANGE;
D O I：
10.1364/OL.36.000277
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose and demonstrate a high-performance and long-range Brillouin optical time-domain analysis (BOTDA) based on time-division multiplexing measurement, where a probe pulse and a pump pulse are used to perform the measurement on a selected sensing section, and the measurement of the entire sensing fiber is realized by combining the series measurements over different sections through changing the delay time between the two pulses. In experiment, a 100 km sensing fiber is divided into 11 sections based on the gain-controlled principle, and spatial resolutions of 0.6 m and 2 m are obtained at the end of 75 km and 100 km, respectively. (C) 2011 Optical Society of America
引用
收藏
页码：277 / 279
页数：3
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