应用CWDM实现FBG传感解调的研究  

Study on FBG sensing demodulation with CWDM

作　　者：张剑[1] 赵洪[1] 熊燕玲[1] 

机构地区：[1]哈尔滨理工大学电气与电子学院

出　　处：《仪器仪表学报》2006年第11期1465-1467,共3页Chinese Journal of Scientific Instrument

摘　　要：本文利用粗波分复用器(CWDM)的传输特性与波长的关系,提出了一种FBG传感解凋方法并建立了实验系统。通过理论分析计算,得出系统的输入/输出之间的关系,并进行了实验验证。系统的波长解调范围为4 nm左右,在没有进行光功率补偿的情况下,根据实验数据的分析计算,方差最差的情况下σ_(max)=4 pm。本系统在对分辨率要求不高的工程实际中的动态解调有着广泛的应用前景。According to the CWDM wavelength dependent transmission characteristics, an FBG sensmg demodulation method was proposed and an experiment system was established. The relationship between system input and output was obtained through analysis and calculation, and the relationship was verified experimentally. The wavelength demodulation range of the system is about 4 nm. Calculated from experiment data, the worst-case standard deviation is 4 pm when no optical power variation compensation is carried out. This system will find wide applications in engineering environment where a fine resolution is not a necessity.

关 键 词：光纤布拉格光栅 传感 动态解调 粗波分复用器 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]