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요약정보
一种基于混合光加密的物理层安全方法 / A Physical Layer Security Method based on Hybrid Optical Encryption
Resource Type
Academic Journal
Authors
巩小雪
;
宣冉
;
张琦涵
;
李瑞
;
GONG Xiao-xue
;
XUAN Ran
;
ZHANG Qi-han
;
LI Rui
Source
光通信研究 / Study on Optical Communications
. (3):7-10
Subject
光加密
光编码
隐匿传输
高非线性光纤
超结构光纤布拉格光栅
Language
Chinese
ISSN
1005-8788
Online Access
Find it @ DONGA
초록
针对目前光网络物理层面临的窃听安全问题,文章提出了一种基于高非线性光纤(HNLF)和超结构光纤布拉格光栅(SSFBG)新的混合光加密方案.方案中采用简并四波混频(FWM)效应对用户信息进行加解密,并采用光编码技术对密钥信息进行编解码,编码的同时实现了密钥信号的隐匿传输.通过对比信道中传输的加密信号波形和原始发送信号波形衡量系统的安全性,并通过系统接收端误码率来衡量系统的有效性.仿真结果表明,使用了文章所提新的混合光加密方案后,用户数据信息的频率和相位发生扰乱,编码后的密钥信号光功率低至-34.4 dBm,因此窃听信道既无法得到有效数据信息,也检测不到密钥信号,从而实现了正交相移键控(QPSK)信号的安全传输.
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