| 基于相位光时域反射的光纤分布式声波传感研究 |
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| 引用本文： | 尚盈,王晨,刘小会,王昌,赵文安,彭刚定.基于相位光时域反射的光纤分布式声波传感研究[J].红外与激光工程,2017,46(3):321003-0321003(5). |
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| 作者姓名： | 尚盈 王晨 刘小会 王昌 赵文安 彭刚定 |
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| 作者单位： | 1.山东省科学院激光研究所 山东省光纤传感重点实验室,山东 济南 250014; |
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| 基金项目： | 国家自然科学基金（61605101）;山东省重点研发计划项目（2015GSF120001）;山东省重点研发计划项目（2014GGX103019） |
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| 摘 要： | 文中提出了一种光纤分布式声波传感方案。作用在传感光纤上的声波信号导致后向瑞利散射光的相位变化，将含有声波信息的后向瑞利散射信号注入到迈克尔逊干涉仪，并采用相位载波解调算法解调出相位信息。实验中采用压电拉伸器模拟声波振动，分布式声波传感系统实现了10 m的空间分辨率以及平坦的频响。
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| 关 键 词： | 分布式声波传感 相位载波 干涉仪 频响 |
| 收稿时间： | 2016-07-10 |
Optical distributed acoustic sensing based on the phase optical time-domain reflectometry |
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| Affiliation: | 1.Shandong Key Laboratory of Optical Fiber Sensing Technologies,Laser Institute of Shandong Academy of Sciences,Jinan 250014,China;2.School of Electrical Engineering &Telecommunications,University of New South Wales,NSW 2052,Australia |
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| Abstract: | A distributed acoustic sensing (DAS) scheme was presented. Rayleigh backscattered light which contained acoustic signal induced phase changes along the sensing fiber was fed into a Michelson interferometer, the phase changes were demodulated by the Phase Generated Carrier technology. A piezoelectric simulation experiment of acoustic vibration was designed. The DAS system realized 10 m location resolution of the acoustic source, and the flat frequency response through the experiment. |
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