摘要
本文论述了光纤光栅传感系统的解调方法。首先本文论述了光栅传感系统的解调趋势,然后理论分析了光纤光栅的传感原理。接着从3个方面介绍了传感系统的信号解调技术,即滤波溶调技术,可调窄带解调技术和色散解调技术,并对以上各种解调技术的优点和缺点进行了论述,并提出一较有前景的解调方法。
In this paper, the method to detect the Bragg waveleng shift of fiber Bragg'grating(FBG)was proposed.Firstly discuss the trend of the demodulations and then the principle of sensing in FBG, and thirdly Various means for fiber Bragg-gratlng sensor wavelength-shift demodulation from three aspects Which are fiter,interference tunable narrow band light source and chromatic dispersiondenmodulation techniques are mainly described. Their advantages and weaknesses have been analyzed and discussed. And a promising method of demodulation was presented.
出处
《自动化与仪器仪表》
2004年第5期11-14,共4页
Automation & Instrumentation
