| 基于光频域喇曼散射的全分布式光纤温度传感器模型研究 |
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| 引用本文： | 耿军平,许家栋,李焱,韦高,郭陈江.基于光频域喇曼散射的全分布式光纤温度传感器模型研究[J].光子学报,2002,31(10):1261-1265. |
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| 作者姓名： | 耿军平 许家栋 李焱 韦高 郭陈江 |
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| 作者单位： | 西北工业大学电子工程系,西安,710072 |
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| 摘 要： | 分析了光频域喇曼背向散射(ROFDR)的理论模型,指出了它的局限性通过把玻色爱因斯坦因子作为温度的函数引入到分析中来完善光频域喇曼背向散射(ROFDR)的理论模型.相对于测试时间来说,温度对时间的变化率很小,认为近似不变,所以通过研究频域和时域的信号关系给出了υ域和z域间的变换关系最后给出了基于此模型的全分布式光纤温度传感器系统的仿真结果,并给出了对计算结果的误差修正公式,基于此得到的结果精度高于以前的报道.
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| 关 键 词： | ROFDR 光频域喇曼背向散射 全分布式光纤温度传感器 |
| 收稿时间： | 2002/1/28 |
| 修稿时间： | 2002年1月28日 |
THEORETICAL ANALYSIS OF THE FULLY DISTRIBUTED FIBER OPTIC SENSOR BASE ON RAMAN OPTICAL-FIBER FREQUENCY-DOMAIN REFLECTOMETRY(ROFDR) |
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| Geng Junping,Xu Jiadong,Li Yan,Wei Gao,Guo Chenjiang.THEORETICAL ANALYSIS OF THE FULLY DISTRIBUTED FIBER OPTIC SENSOR BASE ON RAMAN OPTICAL-FIBER FREQUENCY-DOMAIN REFLECTOMETRY(ROFDR)[J].Acta Photonica Sinica,2002,31(10):1261-1265. |
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| Authors: | Geng Junping Xu Jiadong Li Yan Wei Gao Guo Chenjiang |
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| Institution: | Dept.of Electronic Engineering, Northwestern Polytechnic University, Xi’an 710072 |
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| Abstract: | The theoretical model of Raman optical-fiber frequency-domain reflectometry(ROFDR) which is brought forward in these years is analyzed,and defect of the model is found.The theoretical model is consummated by regarding the Bose-Einstein factor as the function of temperature.Because of the temperature converting slow,the relation between frequency and time is studied,and a model between the υ domain and z domain is given.The emulational result and the corrected result are presented in the end,and the error is less than the reported. |
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| Keywords: | ROFDR Raman optical fiber frequency domain reflectometry Distributed temperature fiber optic sensor |
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