Raman-assisted Brillouin optical time-domain analysis with sub-meter resolution over 100 km

被引：55

作者：

Angulo-Vinuesa, X. ^{[1
]}

Martin-Lopez, S. ^{[1
]}

Corredera, P. ^{[1
]}

Gonzalez-Herraez, M. ^{[2
]}

机构：

[1] CSIC, Inst Opt, E-28006 Madrid, Spain

[2] Univ Alcala De Henares, Dept Elect, Madrid 28871, Spain

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 11期

关键词：

WIDTH PAIR BOTDA; FIBER; PULSE; AMPLIFICATION; SCATTERING; SPECTRUM; SENSORS;

D O I：

10.1364/OE.20.012147

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Sub-meter resolution in long-distance Brillouin Optical Time Domain Analysis (BOTDA) cannot be trivially achieved due to several issues including: resolution-uncertainty trade-offs, self-phase modulation, fiber attenuation, depletion, etc. In this paper we show that combining Raman assistance, differential pulse-width pair (DPP) measurements and a novel numerical de-noising procedure, we could obtain sub-meter resolution Brillouin optical time-domain analysis over a range of 100 km. We successfully demonstrate the detection of a 0.5 meter hot-spot in the position of worst contrast along the fiber. (C) 2012 Optical Society of America

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收藏

页码：12147 / 12154

页数：8

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