High-speed secure key distribution using local polarization modulation driven by optical chaos in reciprocal fiber channel

被引：21
|
作者：
Shao, Weidong [1 ,2 ]
Cheng, Mengfan [1 ,3 ]
Deng, Lei [1 ,3 ]
Yang, Qi [1 ,3 ]
Dai, Xiaoxiao [1 ,3 ]
Liu, Deming [1 ,3 ]
机构：
[1] Huazhong Univ Sci & Technol Shenzhen, Res Inst, Shenzhen 518000, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Cyber Sci & Engn, Wuhan 430074, Peoples R China
[3] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Natl Engn Lab Next Generat Internet Access Syst, Wuhan 430074, Peoples R China
来源：
OPTICS LETTERS | 2021年 / 46卷 / 23期
基金：
中国国家自然科学基金;
关键词：
GENERATION; LASER;
D O I：
10.1364/OL.444346
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a secure key distribution (SKD) based on local polarization modulation driven by optical chaos in a reciprocal fiber link. A robust error-free SKD with a key generation rate of 4.3 Gbit/s over transmission of 10-km standard single-mode fiber is experimentally demonstrated. A chaotic laser system shared by legitimate users serves as an external wideband entropy source. The polarization reciprocity of the fiber channel provides fundamental safety against eavesdropping. The robustness of SKD resulted from local chaotic polarization modulation is also theoretically analyzed and then verified by practical performance. The proposed scheme is an alternative SKD strategy with high speed and strong security. (C) 2021 Optica Publishing Group
引用
收藏
页码：5910 / 5913
页数：4
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