| 基于布里渊光时域反射的分布式光纤传感入侵定位检测系统 |
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| 引用本文： | 胡佳成,陈福昌,林尊琪.基于布里渊光时域反射的分布式光纤传感入侵定位检测系统[J].光电子．激光,2012(5):944-949. |
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| 作者姓名： | 胡佳成 陈福昌 林尊琪 |
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| 作者单位： | 中国科学院上海光学精密机械研究所;中国科学院上海光学精密机械研究所;中国科学院上海光学精密机械研究所 |
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| 基金项目： | 上海市科技专项(05DZ22007)资助项目 |
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| 摘 要： | 建立了基于布里渊时域反射(BOTDR)技术的分布式光纤传感入侵定位检测系统。采用自制的光纤单纵模分布反馈(DFB)激光器,利用边缘滤波(BPF)技术,简化了BOTDR系统中频率解调的方法,实现了对入侵应变事件的快速定位与检测。实验结果表明,当探测范围为10km时,系统的定位空间分辨率达到5m,应变分辨率达到200με,可以满足入侵定位实时检测的需求。
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| 关 键 词： | 光纤光学 分布式光纤传感 布里渊光时域反射(BOTDR) 边缘滤波(BPF) 应变检测 |
A Brillouin optical time-domain reflectometer based distributed fiber optic instrusion sensor system |
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| HU Jia-cheng,CHEN Fu-chang and LIN Zun-qi.A Brillouin optical time-domain reflectometer based distributed fiber optic instrusion sensor system[J].Journal of Optoelectronics·laser,2012(5):944-949. |
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| Authors: | HU Jia-cheng CHEN Fu-chang and LIN Zun-qi |
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| Affiliation: | Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China |
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| Abstract: | A distributed fiber optic intrusion sensor system based on Brillouin optical time-domain reflectometer(BOTDR) has been presented.With the application of a single longitudinal mode distributed feedback(DFB) laser and the sideband-pass filter(BPF) technique,the frequency demodulation of the system can be simplified,and the fast detection of the intrusion events can be achieved.The results show that the spatial resolution can reach 5 m with a strain resolution of 200 με in the measuring range of 10 km for this system,which can meet the requirements of the real-time intrusion detection. |
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| Keywords: | fiber optics distributed fiber optic sensor Brillouin optical time-domain reflectometer(BOTDR) sideband-pass filter(BPF) strain detection |
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