A calibrated 27-km distributed fiber temperature sensor based on microwave heterodyne detection of spontaneous Brillouin backscattered power

被引：20
|
作者：
Maughan, SM [1 ]
Kee, HH [1 ]
Newson, TP [1 ]
机构：
[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2001年 / 13卷 / 05期
关键词：
Brillouin scattering; distributed detection; heterodyning; laser applications; optical fiber measurement applications; optical spectroscopy; Rayleigh scattering; temperature measurement;
D O I：
10.1109/68.920769
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：
Single-ended distributed fiber temperature measurements using the novel technique of microwave (11 GHz) coherent detection of spontaneous Brillouin backscattered power are presented. Anti-Stokes power traces were obtained for a sensing length of 27.4 km, believed to be the longest yet demonstrated for such spontaneous power measurements. The power dependence on temperature was measured as 0.36 +/-0.04%/K, and the rms temperature error was less than 3.5 K at the far end of the sensing fiber.
引用
收藏
页码：511 / 513
页数：3
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