| 基于BOTDR的高分辨率分布式光纤温度传感器 |
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| 引用本文： | 王可,施斌,张勇,席均,高磊,卢毅,朱友群.基于BOTDR的高分辨率分布式光纤温度传感器[J].光纤与电缆及其应用技术,2010(4):8-10,14. |
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| 作者姓名： | 王可 施斌 张勇 席均 高磊 卢毅 朱友群 |
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| 作者单位： | 南京大学光电传感工程监测中心,南京210093 |
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| 基金项目： | [基金项目]国家自然科学基金重点资助项目（40730739）;高等学校博士点基金资助项目（200802840018） |
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| 摘 要： | 布里渊光时域反射计（BOTDR）是一种新型的分布式光纤传感技术。基于BOTDR中布里渊光频移量与光纤温度之间的线性关系，研发出了一种高空间分辨率分布式光纤温度传感器，其空间分辨率提高了数十倍，达到了厘米级。通过室内标定实验，得出了这种温度传感器的温度系数为3．0MHz／℃。在与传统点式温度传感器测量地温场的对比试验中，证明了这种新型温度传感器具有分布式、高分辨率、连续远程测量的诸多优点，显示出其广阔的应用前景。
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| 关 键 词： | 分布式温度传感器 BOTDR 高空间分辨率 |
High-Resolution Fiber Optic Distributed Temperature Sensing Technology Based on BOTDR |
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| WANG Ke,SHI Bin,ZHANG Yong,XI Jun,GAO Lei,LU Yi,ZHU You-qun.High-Resolution Fiber Optic Distributed Temperature Sensing Technology Based on BOTDR[J].Optical Fiber & Electric Cable and Their Applications,2010(4):8-10,14. |
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| Authors: | WANG Ke SHI Bin ZHANG Yong XI Jun GAO Lei LU Yi ZHU You-qun |
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| Affiliation: | (Center for Engineering Monitoring with Optic-Electronic Sensing, Nanjing University, Nanjing 210093, China) |
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| Abstract: | Brillouin optical time domain reflectometer （BOTDR） is a newly developed distributed optical fiber sensing technology. Based on the linear relationship between the frequency shift of Brillouin back-scattered light and the optical fiber＇s temperature, a novel high spatial resolution temperature sensor, which has the spatial resolution of decades of times is developed. The author calibrated the temperature coefficient of 3, 0 MHz/℃ through laboratory experiments and then conducted a outdoor temperature test. It is verified that this new type sensor could be applied to distributed temperature monitoring and had lots of advantages compared with traditional ones, such as distributed, long distance, and high spatial resolution measurements and long-term service life. |
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| Keywords: | distributed temperature sensor BOTDR high spatial resolution |
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