| 分布式光纤测温系统中 APD 探测电路设计 |
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| 引用本文： | 牛卫丛,衣文索,王家宁,崔光磊.分布式光纤测温系统中 APD 探测电路设计[J].吉林大学学报(信息科学版),2017,35(6):597-602. |
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| 作者姓名： | 牛卫丛 衣文索 王家宁 崔光磊 |
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| 作者单位： | 长春理工大学 光电工程学院, 长春 130022 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 为提高基于拉曼散射分布式光纤测温系统整体的探测精度并增加探测距离, 设计了性能优良的 APD
(Avalanche Photo Diode)探测电路。 对光电探测器件工作技术参数进行分析, 选定响应度高和带宽范围大的雪
崩二极管作为转换前端, 采用高精度快速集成运算放大芯片 CLC425 设计带有滤波的多级放大电路。 实验结果
表明, 该电路实用可靠, 具有响应速度快、 精度高和宽带大(100 MHz)的特性, 可有效提高拉曼测温系统的动
态精度和测温范围。
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| 关 键 词： | 光纤传感 拉曼散射探测 温度测量 雪崩光电二极管 |
| 收稿时间： | 2017-06-27 |
Design of APD Detection Circuit in Distribute Fiber Temperature Sensor System |
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| NIU Weicong,YI Wensuo,WANG Jianing,CUI Guanglei.Design of APD Detection Circuit in Distribute Fiber Temperature Sensor System[J].Journal of Jilin University:Information Sci Ed,2017,35(6):597-602. |
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| Authors: | NIU Weicong YI Wensuo WANG Jianing CUI Guanglei |
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| Abstract: | In order to improve the detection precision and increase the detection distance of the system,a APD (Avalanche Photo Diode)detection circuit with better performance is designed.Firstly,the technical parameters of photoelectric detector are analyzed.An avalanche diode with high responsiveness and wide bandwidth is selected as the front end of the photoelectric conversion circuits.The multilevel amplification circuit with filtering is designed, in which high precision and fast integrated operational amplification chip CLC 425 is used. Experimental results indicate that the circuit is stable and practicable.And it has the characteristics of fast response speed,high precision and wide band(100 MHz), which can greatly improve the dynamic precision and temperature range of Raman temperature system. |
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| Keywords: | avalanche photo diode(APD) detection of Raman scattering temperature measurement fiber optic sensing |
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