光学
计算机科学
电子工程
光纤
传输(电信)
数字信号处理
光通信
物理
键控
同步(交流)
混乱的
加密
信号处理
通信系统
电信
计算机硬件
频道(广播)
人工智能
工程类
计算机网络
作者
Yang Zhao,Junxiang Ke,Qunbi Zhuge,Weisheng Hu,Lilin Yi
出处
期刊:Optics Letters
[The Optical Society]
日期:2022-04-26
卷期号:47 (11): 2650-2650
被引量:37
摘要
Chaotic optical communication has attracted much attention as a hardware encryption method in the physical layer. Limited by the requirements of chaotic hardware synchronization, fiber transmission impairments are restrictedly compensated in the optical domain. There has been little experimental demonstration of high-speed and long-distance chaotic optical communication systems. Here, we propose a method to overcome such limitations. Using a deep-learning model to realize chaotic synchronization in the digital domain, fiber transmission impairments can be compensated by digital-signal processing (DSP) algorithms with coherent detection. A successful transmission of 30 Gb/s quadrature phase-shift keying messages hidden in a 15 GHz wideband chaotic optical carrier was experimentally demonstrated over a 340-km fiber link. Meanwhile, the chaotic receiver can be significantly simplified without compromising security. The proposed method is a possible way to promote the practical application of chaotic optical communications.
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