Novel fiber-optic distributed strain and temperature sensor with very high resolution
Novel fiber-optic distributed strain and temperature sensor with very high resolution
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DOI：
10.1093/ietcom/e89-b.5.1722
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发表时间：
2006-05-01
影响因子：
0.7
通讯作者：
Hogari, Kazuo
中科院分区：
文献类型：
--
作者：
Koyamada, Yahei;Eda, Yousuke;Hogari, Kazuo
提出了一种高分辨率测量光纤分布应变和温度的新方法。该技术利用单模光纤瑞利背散射轨迹的锯齿状外观，通过使用具有精确频率控制光源的相干OTDR进行测量。我们的初步实验表明，测量温度的分辨率可能优于0.01℃，空间分辨率为一米。这种温度分辨率比基于布里渊的分布式传感器高两个数量级。
A novel technique is proposed for measuring the distributed strain and temperature in a fiber with a very high resolution. This technique makes use of the jagged appearance of Rayleigh backscatter traces from a single-mode fiber measured by using a coherent OTDR with a precisely frequency-controlled light source. Our preliminary experiment indicated the possibility of measuring temperature with a resolution of better than 0.01 degrees C and a spatial resolution of one meter. This temperature resolution is two orders of magnitude better than that provided by Brillouin-based distributed sensors.