光子防火墙中42 Gbit/s BPSK信号4位全光模式匹配系统及实验验证  

All-optical pattern matching system of 42 Gbit/s 4-bit BPSK signals and its demonstration for optoelectronic firewall

作　　者：张琦涵 巩小雪 李瑞 李新 黄善国 郭磊 ZHANG Qihan;GONG Xiaoxue;LI Rui;LI Xin;HUANG Shanguo;GUO Lei(School of Computer Science and Engineering,Northeastern University,Shenyang 110819,China;Institute of Intelligent Communication and Network Security,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China;Hangzhou Institute of Advanced Technology,Hangzhou 310005,China)

机构地区：[1]东北大学计算机科学与工程学院,辽宁沈阳110819 [2]重庆邮电大学智能通信与网络安全研究院,重庆400065 [3]北京邮电大学电子工程学院,北京100876 [4]杭州中科先进技术研究院,浙江杭州310005

出　　处：《通信学报》2022年第7期31-40,共10页Journal on Communications

基　　金：国家重点研发计划基金资助项目(No.2018YFE0206800);国家自然科学基金资助项目(No.62075024,No.62025105,No.62071076,No.62171050);重庆市自然科学基金资助项目(No.cstc2019jcyj-msxmX0615,No.cstc2021jcyj-msxmX0404);重庆市教委创新研究群体基金资助项目(No.CXQT21019)。

摘　　要：在光子防火墙中,为了实现能够有效处理高速光信号的全光模式匹配技术,针对BPSK信号提出了一种信号速率高达42 Gbit/s的全光模式匹配系统,并采用商用器件进行了实验验证。首先,通过给BPSK输入序列分别添加同相和反相的相干载波将BPSK信号转换为2个互为反向的强度调制(IM)信号;然后,通过延时线和由高非线性光纤(HNLF)实现的光学AND门进行相关操作;最后,输出表征全光模式匹配结果的高电平脉冲。仿真和实验结果表明,所提系统可以在8位的42 Gbit/s BPSK输入序列中识别出4位目标序列,验证了BPSK信号的全光模式匹配的可行性,适用于高速光子防火墙。To achieve the all-optical pattern matching for optoelectronic firewall which could process high-speed optical signals efficiently,a BPSK all-optical pattern recognition system with the data rate up to 42 Gbit/s was proposed and demonstrated by employing the commercial optical components.First,the input BPSK sequence was converted to a positive and a negative IM signals by adding in-phase and inverse-phase coherent carriers,respectively.Then the converted IM signals were coupled into time delay lines and optical AND logic gates implemented by HNLF to achieve the optical correlation operation.In the end,a high-level optical pulse indicating the pattern matched result was output.The numerical simulation and the experiment results demonstrate that the proposed system can recognize a 4-bit target BPSK sequence from an 8-bit 42 Gbit/s BPSK input sequence,which proves the feasibility of the all-optical pattern matching of BPSK signals and can be applied to high-speed optoelectronic firewall.

关 键 词：光子防火墙 全光模式匹配 高非线性光纤 光学逻辑门 光学相关器 

分 类 号：TN913.7[电子电信—通信与信息系统]