Technique for measuring the dynamic strain on an optical fiber based on Brillouin ring amplification

被引：7

作者：

Ogawa, O ^{[1
]}

Kato, T

Kamikatano, M

机构：

[1] Tokyo Elect Power Co Ltd, Comp & Commun R&D Ctr, Yokohama, Kanagawa 230, Japan

[2] Fujikura Ltd, Opt Access Network Lab, Sakura 285, Japan

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 1999年 / 17卷 / 02期

关键词：

Brillouin scattering; distributed optical fiber sensor; fiber ring laser; mode-locking; strain measurement;

D O I：

10.1109/50.744230

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：

A new technique for measuring the dynamic strain on an optical fiber, named Brillouin ring amplification system (BRAS), is proposed. In the BRAS, Stokes light of sufficiently high intensity to detect instantaneous strain change can be obtained by the effect of Brillouin ring amplification, Experimental results demonstrate that the BRAS enables a measurement of dynamic strain,vith a period of about two seconds as well as its spatial distribution over an 11-km long fiber with an accuracy of +/-0.006% strain. Theoretical studies on measurable distance indicate that the BRAS can be used in the case of a long fiber of about 40 km with a resolution of twenty meters.

引用

页码：234 / 242

页数：9

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