实时光栅衍射效率测量的光功率采集器设计  

Design of Real-time Optical Power Acquisition System Based on Grating Diffraction Efficiency Measurement

作　　者：高正[1] 郑继红[1] 桂坤[1] 王青青[1] 王康妮[1] 高辉[1] 陆飞跃[1] 李道萍[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《电子科技》2016年第3期126-129,共4页Electronic Science and Technology

基　　金：上海市研究生创新基金资助项目(JWCXSL1402);上海市教委重点科研创新基金资助项目(14ZZ138)

摘　　要：针对常用光功率计通道单一、测量过程复杂以及自动化程度较低等缺陷,设计了一种基于实时光栅衍射效率测量的双路光功率自动采集器。基于普通光功率计的理论和实际设计方法,提出设计方案。设计硬件方面包括前置放大电路、电源升压电路、A/D转换电路、单片机控制电路以及串口通信电路的设计。在软件方面完成了A/D转换控制程序以及数据传输、计算与存储程序的设计。设计采用633 nm作为测量的标准激光波长,测量功率范围在0.01-10 m W,设计完成后,光栅衍射效率测量精度保证在±4.5%。This paper designs a real-time automatic dual path optical power meter based on grating diffraction efficiency measurement in view of the flaws of ordinary optical power meters such as signal channel,complex measurement process and low degree automation. The design scheme is proposed based of the theory of common power meter. The hardware of this design consists of the preamplifier circuit,power boost circuit,A/D converter circuit,SCM control circuit and serial communication circuit design. The programs of A/D conversion control and data transmission,calculation and storage are designed as well. The working band of the design is 633 nm,and the measuring range of the two-way optical power is from 0. 01 to 10 m W. The accuracy of the design is kept at ± 4. 5%

关 键 词：光功率计 单片机 衍射效率 A/D转换 

分 类 号：TN929.11[电子电信—通信与信息系统] TH741[电子电信—信息与通信工程]