64-Gbit/s Optical-Domain Encrypted Chaotic Secure Communication Over 110-km Commercial Fiber

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-03-12 DOI:10.1109/LPT.2025.3550567

Jiacheng Feng;Lin Jiang;Lianshan Yan;Anlin Yi;Wei Pan

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引用次数: 0

Abstract

As a physical layer secure transmission scheme, optical chaotic communication has garnered significant attention for its notable advantages in transmission rate and transmission distance. However, issues like fiber link damage and hardware mismatches between transmitter and receiver hinder its advancement to higher speeds and longer distance. In this letter, we experimentally demonstrate chaotic secure communication of a 64 Gbit/s PAM-4 signal transmitted over 250km using a chaotic optoelectronic oscillator (OEO) system, achieving record-breaking capacity-distance products of 16000-Gbit/s•km in optical-domain encrypted chaotic secure communication using single-core SMF. In our laboratory validation, we utilized ultra-low-loss (~0.155dB/km), large-effective-area (

$\sim 150~\mu $

m2) SMF to reduce link losses and enhance OSNR at the receiver. A multi-span dispersion-managed fiber link, along with decision-directed least-mean square (DD-LMS) algorithm, is employed to address amplitude distortion caused by the fiber, modulation, and synchronization mismatches. Furthermore, we also successfully demonstrated in a 110-km deployed commercial optical fiber in Chengdu, China, presenting a cost-effective approach to strengthening commercial optical network security.

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.