Time-Domain Distributed Fiber Sensor With 1 cm Spatial Resolution Based on Brillouin Dynamic Grating

被引：108

作者：

Song, Kwang Yong ^{[1
]}

Chin, Sanghoon ^{[1
]}

Primerov, Nikolay ^{[1
]}

Thevenaz, Luc ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Elect Engn, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2010年 / 28卷 / 14期

关键词：

Brillouin scattering; gratings; optical fibers; optical fiber measurements; POLARIZATION-MAINTAINING FIBER; OPTICAL-FIBERS; SCATTERING; SPECTRUM; BIREFRINGENCE; STRAIN;

D O I：

10.1109/JLT.2010.2050763

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 demonstrate an optical time-domain distributed fiber sensor showing the highest spatial resolution ever reported based on Brillouin dynamic grating in a polarization-maintaining fiber. In our scheme, the acoustic gratings containing the information on the local Brillouin frequency are generated by a long pump pulse in one polarization, and read out by a short probe pulse in the orthogonal polarization at a clearly distinct optical frequency from the pump. In the experiment, distributed temperature measurements over a 20 m fiber are performed with 1.2 cm spatial resolution.

引用

页码：2062 / 2067

页数：6

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