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。
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 lambertbeer＇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. This method will have extensive application in biological detection.aviation and environmental monitoring.
出处
《压电与声光》
CSCD
北大核心
2011年第4期529-532,共4页
Piezoelectrics & Acoustooptics
