摘要
研究并实现了一种基于InGaAs线阵探测器的光纤Bragg光栅(FBG)传感系统。针对所采用的InGaAs线阵探测器,分析了其基本特征和工作时序,设计了相应的驱动电路和数据采集、传输系统,并基于FPGA时序控制实现了上述系统。针对系统采集得到的原始数据,通过双通道数据分离算法得到完整的光谱数据,并通过多项式拟合对数据进行寻峰和标定。实验结果表明,InGaAs线阵探测器在驱动电路的控制下能够正常工作,其输出数据符合FBG反射光谱理论分析。
A fiber Bragg grating（FBG） sensing system based on InGaAs linear array detector is researched and realized.The characteristics and time sequence of the detector are analyzed.The drive circuit,data acquisition and transmission system for the detector are designed and realized with the application of FPGA.The dual-channel splitting algorithm is realized to obtain the spectrum profile from the original data,and the polynomial fitting algorithm is employed for peak search and calibration.The experimental results show that the InGaAs linear array detector works well under the control of the system,and the output spectrum of the system accords with the theoretical analysis well.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2011年第9期1322-1325,共4页
Journal of Optoelectronics·Laser
基金
航空集团创新团队基金资助项目(09102508)
