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

被引：107
|
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
收藏
页码：2062 / 2067
页数：6
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