High-Spatial-Resolution Time-Domain Simultaneous Strain and Temperature Sensor Using Brillouin Scattering and Birefringence in a Polarization-Maintaining Fiber

被引：84
作者：
Dong, Yongkang [1 ]
Chen, Liang [1 ]
Bao, Xiaoyi [1 ]
机构：
[1] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2010年 / 22卷 / 18期
关键词：
Birefringence; Brillouin scattering; polarization-maintaining fiber (PMF); strain measurement; temperature measurement; FREQUENCY;
D O I：
10.1109/LPT.2010.2056678
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 report on a high-spatial-resolution simultaneous strain and temperature measurement in time domain through measuring Brillouin frequency shift (BFS) and birefringence-induced frequency shift (BireFS) in a polarization-maintaining fiber. High-spatial-resolution BFS and BireFS measurement are obtained through differential pulsewidth pair Brillouin optical time-domain analysis and a local Brillouin grating, respectively. Simultaneous strain and temperature measurement with a spatial resolution of 20 cm is demonstrated in a 6-m Panda fiber. The temperature and strain accuracy is 0.4 degrees C and 9 mu epsilon, and their range can be up to 700 degrees C and 14 m epsilon, respectively.
引用
收藏
页码：1364 / 1366
页数：3
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