Experimental demonstration of 8190-km long-haul semiconductor-laser chaos synchronization induced by digital optical communication signal

Anbang Wang; Junli Wang; Lin Jiang; Longsheng Wang; Yuncai Wang; Lianshan Yan; Yuwen Qin

doi:10.1038/s41377-024-01702-z

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Experimental demonstration of 8190-km long-haul semiconductor-laser chaos synchronization induced by digital optical communication signal

Original Articles

- Experimental demonstration of 8190-km long-haul semiconductor-laser chaos synchronization induced by digital optical communication signal
- Light: Science & Applications Vol. 14, Issue 2, Pages: 333-343(2025)
- Affiliations：
  
  1.Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of Education of China, Guangdong University of Technology, Guangzhou 510006, China
  2.Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan 030024, China
  3.Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China
  4.Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China
  5.College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China
  6.Center for Information Photonics and Communications, Southwest Jiaotong University, Chengdu 610031, China
- Author bio：
  
  Yuncai Wang (wangyc@gdut.edu.cn)
  Lianshan Yan (lsyan@swjtu.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01702-z
  CLC：
- Received：10 May 2024，
  
  Revised：16 October 2024，
  
  Accepted：2024-11-27，
  
  Published Online：08 January 2025，
  
  Published：28 February 2025
- Accepted：
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Wang, A. B. et al. Experimental demonstration of 8190-km long-haul semiconductor-laser chaos synchronization induced by digital optical communication signal. Light: Science & Applications, 14, 333-343 (2025).
DOI：

Wang, A. B. et al. Experimental demonstration of 8190-km long-haul semiconductor-laser chaos synchronization induced by digital optical communication signal. Light: Science & Applications, 14, 333-343 (2025). DOI： 10.1038/s41377-024-01702-z.

摘要

Abstract

Common-signal-induced synchronization of semiconductor lasers have promising applications in physical-layer secure transmission with high speed and compatibility with the current fiber communication. Here

we propose an ultra-long-distance laser synchronization scheme by utilizing random digital optical communication signal as the common drive signal. By utilizing the long-haul optical coherent communication techniques

high-fidelity fiber transmission of the digital drive can be achieved and thus ultra-long-distance synchronization is expected. Experiments were implemented with distributed feedback lasers injected by a random-digital phase-modulated drive light. Results show that high-quality synchronization can be achieved as the drive signal rate is larger than the laser relaxation frequency and the transmission bit error ratio is below a critical value. Chaos synchronization over 8191-km fiber transmission was experimentally achieved. Compared to traditional common-signal-induced synchronization using analog drive signal such as chaos

the distance is increased by 8 times

and complicated hardware devices for channel impairment compensation are no longer required. In addition

the proposed method does not sacrifice communication capacity like traditional methods which need a channel to transmit analog drive signal. It is therefore believed that this common-digital-signal induced laser synchronization paves a way for secure backbone and submarine transmission.

关键词

Keywords

references

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