基于256级灰度线性声光调制器驱动电源的设计  

Design of Linear Acousto-optic Modulator Driving Power Supply Based on 256 Level Gray Scale

作　　者：蔡睿博 张志伟[1,2] 周森 CAI Ruibo;ZHANG Zhiwei;ZHOU Sen(School of Information and Communication Engineering,North University of China,Taiyuan 030051,China;Key Laboratory of Electronic Testing Technology,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学信息与通信工程学院,山西太原030051 [2]中北大学电子测试技术重点实验室,山西太原030051

出　　处：《压电与声光》2019年第6期866-869,873,共5页Piezoelectrics & Acoustooptics

基　　金：山西省自然基金资助项目(201701D121060)

摘　　要：该文设计了一种衍射光功率随灰度等级呈线性变化的256级线性声光调制驱动源。该设计通过使用单片机对以数字电位器DS3902为核心的数字电压控制电路,在声光调制器输入电压0~5 V内产生了具有256个档次的数字电压,并对声光调制器的性能进行了研究。根据声光器件固有的非线性特性,通过线性补偿技术,使补偿后衍射光功率与灰度等级的线性相关系数可达99.91%,比补偿前提高了1.15%。In this paper,a 256-level linear acousto-optic modulation driving source with diffracted optical power linearly varying with gray level is designed.The design uses a digital voltage control circuit with a digital potentiometer DS3902 as the core to generate a digital voltage with 256 levels in the input voltage of the acousto-optic modulator from 0 to 5 V,and the performance of the acousto-optic modulator is investigated.According to the inherent nonlinear characteristics of the acousto-optic device,the linear correlation coefficient between the compensated diffracted optical power and the gray level can reach 99.91%,which is 1.15%higher than that before compensation.

关 键 词：衍射光强 驱动电源 声光调制 振幅调制 数字电位器 

分 类 号：TN384[电子电信—物理电子学]