摘要
为了准确地完成光电检测,需要研究并设计一种光电检测系统。采用当前方法设计的系统进行光电检测时,不能有效地去除光电检测系统中存在的噪声,得到的检测结果误差较大,存在抗干扰性能差和光电检测结果准确率低的问题。提出基于光纤光栅的光电检测系统设计方法。通过转换电路将光源转变为光信号,利用信号调理电路和锯齿波放大电路放大光信号,并对放大处理后的光信号进行去噪处理。将处理后的光信号传送到存储器中,根据光栅模式理论和光栅特性得到光栅的投射函数和反射函数,通过以上两个函数设计光电检测器。采用数据传输模块将存储器中的光信号传送到光电检测器中,得到光电检测结果,完成光电检测系统的设计。实验结果表明,所提方法的抗干扰性能强,光电检测结果准确率高。
In order to accurately complete photoelectric detection,it is necessary to study and design a photoelectric detection system.When the system designed by the current method is used for photoelectric detection,the noise existing in the photoelectric detection system cannot be effectively removed,and the obtained detection result has large error,and there is a problem that the anti-interference performance is poor and the photoelectric detection result has low accuracy.A fiber grating based photoelectric detection system design method is proposed.The light source is converted into an optical signal by a conversion circuit,and the optical signal is amplified by the signal conditioning circuit and the sawtooth wave amplifying circuit,and the optical signal after the amplification is denoised.The processed optical signal is transmitted to the memory,and the projection function and the reflection function of the grating are obtained according to the grating mode theory and the grating characteristic,and the photodetector is designed by the above two functions.The data transmission module is used to transmit the optical signal in the memory to the photodetector to obtain the photoelectric detection result,and the design of the photoelectric detection system is completed.The experimental results show that the proposed method has strong anti-interference performance and high accuracy of photoelectric detection results.
作者
朱娴
ZHU Xian(Jincheng college,Nanjing University of Aeronautics&Astronautics,Nanjing 211156,China)
出处
《激光杂志》
北大核心
2019年第5期58-62,共5页
Laser Journal
基金
江苏省"333工程"科研资助项目(No.BRA2016177)
关键词
光纤光栅
光电检测
信号检测
fiber grating
photoelectric detection
signal detection
作者简介
朱娴(1984-),女,江苏南京人,硕士,讲师,研究方向:大学物理实验教学等。
