Spontaneous brillouin-based distributed temperature sensor utilizing a fiber Bragg crating notch filter for the separation of the Brillouin signal

被引：32

作者：

Wait, PC ^{[1
]}

Hartog, AH ^{[1
]}

机构：

[1] York Sensors Ltd, Chandlers Ford SO53 4DG, Hants, England

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2001年 / 13卷 / 05期

关键词：

Brillouin scattering; distributed temperature sensing; fiber gratings; optical fibers;

D O I：

10.1109/68.920768

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report on a Brillouin optical time domain reflectometer-based distributed temperature sensor utilizing a fiber Bragg grating notch filter to suppress the Rayleigh backscatter in order to separate the Brillouin signal. The Brillouin light path is thus subject to minimum attenuation and is frequency independent. A 2-m spatial resolution is achieved over a range of 25 km with the temperature resolution rising from 1 degreesC at the near end to 7 degreesC at the far end in a measurement time of 10 min, This is reduced to < 1 degreesC over similar to 20 km if the measurement time is increased to 180 min.

引用

页码：508 / 510

页数：3

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