基于光纤F-P滤波器的FBG传感解调系统  

FBG Sensor Demodulation System Based on F-P Fiber Interferometer Filter

作　　者：赵立民[1] 王鑫[1] 刁春暖[1] 

机构地区：[1]沈阳工业大学信息科学与工程学院,辽宁沈阳110023

出　　处：《仪表技术与传感器》2008年第2期76-77,79,共3页Instrument Technique and Sensor

摘　　要：通过对光纤F-P滤波器原理的研究,提出了一种基于光纤滤波器的光纤B ragg光栅(FBG)传感解调系统,该系统不仅具有体积小、价格低、光能利用率高、操作简单等优势,而且可以直接输出对应于波长变化的电信号,实现准确的多点同时测量。通过该系统测出一组典型数据后再运用曲线拟合或者插值等相关运算便可以确定光纤光栅反射中心波长的微小偏移量,进而得到外界物理量的变化。对该方案的主要器件选择、软硬件设计进行了详细介绍。该解调系统的动态扫描范围达50 nm,分辨率达到2 pm.A fiber Bragg grating（FBG） sensor demodulation system was introduced,which based on the research of F-P fiber interferometer filter.The system had the advantages of small volume,low price,high utilization rate of ray,simple operation and so on.It can also output electrical signal directly and measure multi-point exactly.Micro offset of FBG wavelength was confirmed via curve imitate or value insert after a set of data tested,then outside physical value was gained.The selection of main instruments and the design of hardware and software were introduced in detail.The range of dynamic measure is 50 nm and the resolution is 2 pm.

关 键 词：光纤光栅 光纤F—P滤波器 DSP系统 

分 类 号：TN253[电子电信—物理电子学]