基于Labview的光纤光栅波长解调系统  

A Novel Fiber Bragg Grating Sensors Interrogation System Based on Labview

作　　者：王桂英[1] 金杰[1] 吕辰刚[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《压电与声光》2012年第6期824-827,共4页Piezoelectrics & Acoustooptics

基　　金：国家自然基金资助项目(60777014);教育部博士点基金资助项目(20090032110027);天津市应用基础及前沿技术研究计划基金资助项目(09JCZDJC25600)

摘　　要：提出了一种基于Labview的数字化光纤光栅信号解调系统,实现了光纤光栅应变传感波长解调。采用Labview编写程序实现信号的实时采集、处理、显示,解决了普通光纤光栅解调设备成本高,体积大等难题;进行了基于上述系统的光纤光栅应变传感实验研究。实验结果表明,反射谱线中心波长漂移量与轴向应力具有很好的线性关系,当应力达到60με时,光纤Bragg光栅(FBG)对应的波长漂移量约为1.90nm。This paper proposed a digital FBG signal demodulation system based on Labview software, and realized the FBG strain sensor for demodulating wavelength. The data is also acquisited, processed and displayed by Labview software. It solved the problem of the high cost and huge volume of general spectrum demodulation equip- ment. Experimental research of strain sensoring was preceded using the system. Experimental results showed that： reflection wave spectrum line center drift and the axial stress had good linear relationship. When the stress was reached to 60 με, the corresponded FBG wavelength shift was about 1.90 nm.

关 键 词：光纤BRAGG光栅 可调谐F-P滤波技术 应变传感 LABVIEW 寻峰算法 

分 类 号：TN256[电子电信—物理电子学]