Optoelectronic Technology, Volume. 43, Issue 2, 156(2023)

A Design Method of Drive and Control Circuit for Massive Optical Switch Array

Pengyi YANG1,2, Yang WU2, Zongying YAO2, and Honggao LI1,2
Author Affiliations
  • 1Anhui Province Key Laboratory of Microsystem, the 43rd Research Institute of CETC, Hefei 230088, CHN
  • 2The 43rd Research Institute of CETC, Hefei 30088, CHN
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    Figures & Tables(6)
    Drive control scheme of 2000 channel optical switch array
    Drive control circuit diagram of optical switch array
    Flow chart of optical switch array driver control program
    Physical object and test diagram of optical switch array drive control circuit
    • Table 1. Table of core chip analysis and selection

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      Table 1. Table of core chip analysis and selection

      名称型号功能选型依据主要特性
      FPGAEP4CE40F29C6N控制DAC、模拟开关主要考虑I/O口支持的最大传输速率、逻辑单元大小、管脚数量、封装尺寸39 600个逻辑单元,8个用户Bank区,最多532个用户IO,小尺寸BGA封装
      DACDAC60096产生幅度可调的电平信号控制信号电平幅度最大5 V,调节精度优于10 mV,5 V/10 mV=500,210=1024,考虑设计余量,采用10 bits以上DAC能满足幅度调节精度的要求96通道、12位数模转换,内置缓冲,可提供±10.5 V双极性电压输出,串行接口通信,196焊球BGA封装
      模拟开关SN74LVC1G3157在高低电平之间切换,输出开关型脉冲控制信号开关切换速度优于2 ns,导通电阻尽可能小,承受的导通电流大于20 mA,单电源供电,尺寸尽可能小单通道单刀双掷开关,0.5 ns切换速度,导通电阻6 Ω,导通电流±100 mA,1.65 V~5.5 V单电源工作,X2SON (DTB)封装
      运放AD8534ARU放大DAC的输出信号,提高带载能力输出信号电平幅度不小于5 V,输出电流能力大于20 mA2.7 V~6 V轨到轨输入、输出,输出电流±250 mA,TSSOP‑14封装
    • Table 2. Experimental results of optical switch drive control circuit

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      Table 2. Experimental results of optical switch drive control circuit

      上升延/ns下降延/ns高电平/V低电平/V调节精度/V
      1.9681.4362~30~10.01
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    Pengyi YANG, Yang WU, Zongying YAO, Honggao LI. A Design Method of Drive and Control Circuit for Massive Optical Switch Array[J]. Optoelectronic Technology, 2023, 43(2): 156

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    Paper Information

    Category: Research and Trial-manufacture

    Received: Feb. 13, 2023

    Accepted: --

    Published Online: Aug. 31, 2023

    The Author Email:

    DOI:10.19453/j.cnki.1005-488x.2023.02.008

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