100 km distributed temperature sensor based on coherent detection of spontaneous Brillouin backscatter

被引：33

作者：

Alahbabi, MN ^{[1
]}

Cho, YT ^{[1
]}

Newson, TP ^{[1
]}

机构：

[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2004年 / 15卷 / 08期

关键词：

distributed temperature; strain; laser source; lightwave detector; optical fibre sensors; Brillouin scattering; Brillouin frequency shifts; monitoring temperature on power lines; oil pipelines; live optical fibre data links; power plants; nuclear reactors; distributed temperature and strain sensors;

D O I：

10.1088/0957-0233/15/8/020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the longest sensing range of a distributed temperature change measurement along an optical sensing fibre with single-ended access. The technique is based on spontaneous Brillouin scattering and microwave heterodyne detection. The Brillouin frequency shift was used to obtain the distributed temperature change at a range of 100 km with a temperature error of less than 8 degreesC, and a spatial resolution of 50 m.

引用

页码：1544 / 1547

页数：4

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