| 基于PPP-80TDA分布式光纤温度传感技术的数值模拟 |
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| 引用本文： | 李德桥,丁克勤,王飞.基于PPP-80TDA分布式光纤温度传感技术的数值模拟[J].传感器世界,2011,17(4):26-29. |
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| 作者姓名： | 李德桥 丁克勤 王飞 |
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| 作者单位： | 1. 中北大学信息与通信工程学院,山西太原030051;中国特种设备检测研究院,北京,100013
2. 中国特种设备检测研究院,北京,100013 |
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| 基金项目： | 国家科技支撑计划资助项目 |
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| 摘 要： | 基于脉冲预泵浦布里渊光时域分析法的分布式光纤温度传感技术是近年来出现的一种新型温度传感技术.本文采用有限差分法对一维瞬态受激布里渊散射的耦合波方程进行了数值求解,分别模拟了传感器在不同温度情况下的布里渊散射三维频谱图,得到了布里渊散射谱的中心频率、布里渊频移以及功率随温度变化的趋势.仿真结果表明,理论模拟与实际相符,并...
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| 关 键 词： | 脉冲预泵浦布里渊光时域分析法 数值模拟 受激布里渊散射 有限差分法 |
Numerical simulation of distributed fiber optic temperature sensing technology based on PPP-BOTDA |
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| LI Deqiao,DING Keqin,WANG Fei.Numerical simulation of distributed fiber optic temperature sensing technology based on PPP-BOTDA[J].Sensor World,2011,17(4):26-29. |
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| Authors: | LI Deqiao DING Keqin WANG Fei |
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| Affiliation: | 1,2(1.Institute of Information and Communication Engineering,North University of China,Taiyuan 030051,China;2.China Special Equipment Inspection and Research Institute,Beijing 100013,China) |
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| Abstract: | The distributed fiber optic temperature sensing technology based on PPP-BOTDA(Pre-Pump Pulse Brillouin Optical Time Domain Analysis) is a new kind of strain sensing technology.The coupled wave equations of one-dimensional transient SBS(Stimulated Brillouin Scattering) are solved with finite difference method.The three-dimensional Brillouin Scattering spectra of sensor in different temperatures are simulated.Both the center frequency and the frequency shift of Brillouin Scattering spectra are calculated,and the change trend of power with temperature are also obtained.The results show that the theoretical simulation keeps identical with the actual situation.With the feature of high sensitivity,this sensing technology will promise wide application prospect in the structural health monitoring field. |
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| Keywords: | PPP-BOTDA(Pre-Pump Pulse Brillouin Optical Time Domain Analysis) numerical simulation SBS(Stimulated Brillouin Scattering) finite difference method |
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