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基于FPGA的高速电光选通系统设计
引用本文:党君礼,刘百玉,欧阳娴,白永林,舒雅,熊发田,李晓坤,雷娟.基于FPGA的高速电光选通系统设计[J].光子学报,2009,38(5):1091-1095.
作者姓名:党君礼  刘百玉  欧阳娴  白永林  舒雅  熊发田  李晓坤  雷娟
作者单位:1. 瞬态光学与光子技术国家重点实验室,中国科学院西安光学精密机械研究所,西安,710119;中国科学院研究生院,北京,100049
2. 瞬态光学与光子技术国家重点实验室,中国科学院西安光学精密机械研究所,西安,710119
基金项目:国家高技术研究发展计划(863计划) 
摘    要:介绍了一种获取高速调制电信号的新方法-基于FPGA的高速电光选通系统.此系统分为选通脉冲和高压调控两个模块.选通脉冲模块由高速信号放大、FPGA延时、可控延迟传输线三个部分组成.利用FPGA高密度、高可靠性、可反复擦写和可以现场编程、灵活调制的特点,将整个系统的主要控制部分集成在FPGA中,并将延时分为数字延时和模拟延时两部分.然后利用FPGA实现数字延时,可控延时线实现模拟延时.经试验检测,高压部分可以产生重复频率1 Hz~1 kHz,步进1 Hz,延时范围为0~1 μs,步进为1 ns,幅度为8 000 V,前沿和后沿小于10 ns,抖动小于1 ns的高压矩形电脉冲,从而满足各种电光调制系统中的需要.

关 键 词:电光调制  激光调Q  现场可编程逻辑阵列(FPGA)  电光选通系统
收稿时间:2008-03-04
修稿时间:2008-04-14

High Speed Electro-optic Gating System Design Based on FPGA
DANG Jun-li,LIU Bai-yu,OU-YANG Lan,BAI Yong-lin,SHU Ya,XIONG Fa-tian,LI Xiao-kun,LEI Juan.High Speed Electro-optic Gating System Design Based on FPGA[J].Acta Photonica Sinica,2009,38(5):1091-1095.
Authors:DANG Jun-li  LIU Bai-yu  OU-YANG Lan  BAI Yong-lin  SHU Ya  XIONG Fa-tian  LI Xiao-kun  LEI Juan
Institution:1.
2. Graduate School of the Chinese Academy of Sciences,Beijing 100049,China
3. Xi′an Institute of Optics and Precision Mechanic,Chinese Academy of Sciences,Xi′an710119,China
Abstract:A novel approach called high speed electro-optic gating system was introduced to obtain the high speed electrical modulation signal. The system consists of two modules: gating pulse module and high voltage modulation module. The gating pulse module includes high-speed signal amplifier, FPGA (Filed Programmable Gate Array) delayer and controllable delayed transmission-line. The integration of the significant control function into FPGA achieves a number of desired properties such as high density, high integrated, erasable, filed programmable, and modulation-flexible. The overall delay was separated into digital delay and analog delay, which were finished by FPGA and controllable delayed transmission-line respectively. Experiments show that the system can generate a high-voltage rectangular electrical pulse with repetition frequency 1 Hz to 1 kHz, stepping 1 Hz, delay range from 0 to 1 μs, stepping 1ns, high voltage range from 0 V to 8 000 V, rising edge and falling edge within 10ns, jitter within 1ns. It can be applied to various electro-optic equipments.
Keywords:Electro-optic modulation  Q-switched laser  FPGA(Filed Programmable Gate Array)  Electro-optic gating system
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