Slope-assisted fast distributed sensing in optical fibers with arbitrary Brillouin profile

被引：197

作者：

Peled, Yair ^{[1
]}

Motil, Avi ^{[1
]}

Yaron, Lior ^{[1
]}

Tur, Moshe ^{[1
]}

机构：

[1] Tel Aviv Univ, Fac Engn, IL-69978 Tel Aviv, Israel

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 21期

基金：

以色列科学基金会;

关键词：

CORRELATION-DOMAIN ANALYSIS; DYNAMIC STRAIN-MEASUREMENT; ORDER SPATIAL-RESOLUTION; SINGLE-MODE FIBERS; SPECTRUM; SENSOR; SCATTERING;

D O I：

10.1364/OE.19.019845

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a novel method, based on stimulated Brillouin scattering (SBS), for the simultaneous distributed measurement of fast strain variations along the entire length of the sensing fiber. A specially synthesized and adaptable probe wave is used to place the Brillouin interaction always on the slope of the local Brillouin gain spectrum, allowing a single pump pulse to sample fast strain variations along the full length of a fiber with an arbitrary distribution of the Brillouin frequency shift. In this early demonstration of the method, strain vibrations of a few hundred Hz are demonstrated, simultaneously measured on two different sections of an 85m long fiber, having different static Brillouin shifts and with a spatial resolution of 1.5m. (C) 2011 Optical Society of America

引用

页码：19845 / 19854

页数：10

共 16 条

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