| 对F-P腔式气体光纤传感器信号解调方法的研究 |
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| 引用本文： | 黄政,白忠臣.对F-P腔式气体光纤传感器信号解调方法的研究[J].压电与声光,2011,33(4). |
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| 作者姓名： | 黄政 白忠臣 |
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| 作者单位： | 贵州大学光电子技术及应用重点实验室,贵州贵阳,550025 |
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| 摘 要： | 研究了一种新型的基于法-珀(F-P)腔式气体光纤传感器信号解调的方法。应用F-P腔的多光束干涉原理和气体吸收的朗-比定律建立起检测的数学模型,在理论上设计了其信号的解调方法,模拟分析了有效光程对待测气体浓度的影响及影响该方法检测精度的因素,从模拟结果分析了如何选择腔长的变化范围以确保频率间隔适用于实际测量。该法可在生物检测、航空航天、环境监测等许多领域中广泛应用。
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| 关 键 词： | 光学传感器 法-珀(F-P)腔 信号解调 多光束干涉 |
Study on Signal Demodulation Methods for Fabry-Perot Cavity Fiber-Optic Gas Sensor |
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| HUANG Zheng,BAI Zhongcheng.Study on Signal Demodulation Methods for Fabry-Perot Cavity Fiber-Optic Gas Sensor[J].Piezoelectrics & Acoustooptics,2011,33(4). |
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| Authors: | HUANG Zheng BAI Zhongcheng |
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| Affiliation: | HUANG Zheng,BAI Zhongcheng(Key Lab.for Photoelectric Technology and Application,Guizhou University,Guiyang 550025,China) |
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| Abstract: | This paper study on signal demodulation methods for a novel fabry-perot cavity fiber-optic gas sensor.The mathematical model for detection is set up by applying the multiple-beam interference principle and lambert-beer's law.Simulation analyzes the influence of effective optical path on detected gas concentration and the various factors of affecting detection accuracy.Moreover,analyzing how to choose the variation range of cavity length to make sure the frequency intervals are fit for actual measurement.Thi... |
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| Keywords: | optical sensor F-P cavity signal demodulator multiple-beam interference |
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