基于FPGA和DDS的声光调制器驱动电路的实现

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英文篇名：Implementation of Acousto-optic Modulator Driven Circuit Based on FPGA and Direct Digital Synthesizer 作者：游峰 ; 陈滔 ; 孔伟 ; 刘豪 ; 舒嵘 ; 胡以华 英文作者：YOU Feng;CHEN Tao;KONG Wei;LIU Hao;SHU Rong;HU Yihua;Shanghai Institute of Technical Physics,Chinese Academy of Sciences;School of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences;State Key Laboratory of Pulsed Power Laser Technology,National University of Defense Technology; 关键词：声光调制器 ; 现场可编程门阵列(FPGA) ; 直接数字频率合成器(DDS) ; 功率放大器 ; Verilog ; HDL 英文关键词：acousto-optic modulator;;field programmable gate array(FPGA);;direct digital synthesizer(DDS);;power amplifier;;Verilog HDL 中文刊名：YDSG 英文刊名：Piezoelectrics & Acoustooptics 机构：中国科学院上海技术物理研究所;中国科学院大学电子电气与通信工程学院;国防科技大学脉冲功率激光技术国家重点实验室; 出版日期：2019-02-15 出版单位：压电与声光 年：2019 期：v.41;No.244 基金：中国科学院重点实验室基金资助项目(CXJJ-17S026) 语种：中文; 页：YDSG201901010 页数：4 CN：01 ISSN：50-1091/TN 分类号：36-39

摘要

提出了一种以现场可编程门阵列(FPGA)和直接数字频率合成器(DDS)芯片AD9910为核心器件,经过LT5514,HMC680LP4和HELA-10D组成的三级功率放大的声光调制器驱动电路。该文测量了此驱动电路的单频输出,频率切换输出和扫频输出性能,并使用1 572nm波长的分布反馈激光器(DFB)激光二极管作为光源,测试了该驱动电路驱动2款不同工作频率的光纤声光调制器的能力。实验结果表明,驱动电路的输出频率在30～300MHz可调谐,输出功率在20～30dBm可调谐,该驱动电路具有较高的灵活性,可用于驱动不同类型的声光调制器。
        In this paper,an implementation of acousto-optic modulator driven circuit based on FPGA and DDS chip AD9910,with the output signal amplified by a three-stage cascaded LT5514,HMC680LP4 and HELA-10 D power amplifiers,is presented.The performance testing of single frequency output,frequency switching output and frequency sweeping output are carried out.And a 1 572 nm DFB laser diode is used as the source to test the capability of the circuit to drive two different fiber acousto-optic modulators.The experimental results indicate that the output frequency of circuit is tunable from 30 MHz to 300 MHz and the output power is tunable from 20 dBm to30dBm.The proposed circuit has great flexibility and can be used to drive different types of acousto-optic modulator.

引文

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