Distributed strain measurement with millimeter-order spatial resolution based on Brillouin optical correlation domain analysis.
Distributed strain measurement with millimeter-order spatial resolution based on Brillouin optical correlation domain analysis.
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DOI：
10.1364/ol.31.002526
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发表时间：
2006-09
期刊：
影响因子：
3.6
通讯作者：
K. Song;Zuyuan He;K. Hotate
中科院分区：
文献类型：
--
作者：
K. Song;Zuyuan He;K. Hotate
基于布里渊光相关域分析，在光纤中实现了毫米级空间分辨率的分布式应变传感。为了抑制布里渊泵浦波反射产生的背景噪声，提出了一种新的锁拍检测方案。在理论空间分辨率为1.6 mm的情况下，成功地测量了3mm光纤段的布里渊频移。
Distributed strain sensing with millimeter-order spatial resolution is demonstrated in optical fibers based on Brillouin optical correlation domain analysis. A novel beat lock-in detection scheme is introduced to suppress background noises coming from the reflection of Brillouin pump waves. The Brillouin frequency shifts of 3 mm fiber sections are successfully measured with a theoretical spatial resolution of 1.6 mm.