中国物理B ›› 2004, Vol. 13 ›› Issue (8): 1215-1220.doi: 10.1088/1009-1963/13/8/006

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Synchronization of chaotic erbium-doped fibre lasers and its application in secure communication

张胜海1, 沈柯2   

  1. (1)Department of Mathematics and Physics, Institute of Science, Zhengzhou Information Engineering University, Zhengzhou 450001, China; Department of Physics, Changchun University of Science and Technology, Changchun 130022, China; (2)Department of Physics, Changchun University of Science and Technology, Changchun 130022, China
  • 收稿日期:2003-11-13 修回日期:2004-04-12 出版日期:2004-06-21 发布日期:2005-06-21

Synchronization of chaotic erbium-doped fibre lasers and its application in secure communication

Zhang Sheng-Hai (张胜海)ab, Shen Ke (沈柯)b   

  1. a Department of Mathematics and Physics, Institute of Science, Zhengzhou Information Engineering University, Zhengzhou 450001, China; b Department of Physics, Changchun University of Science and Technology, Changchun 130022, China
  • Received:2003-11-13 Revised:2004-04-12 Online:2004-06-21 Published:2005-06-21

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摘要： We have investigated the synchronization of chaotic dual-ring erbium-doped fibre lasers using the delay feedback－injection scheme. Numerical simulation shows that two chaotic dual-ring erbium-doped fibre lasers can be well synchronized if the strengths of delay feedback and injection are suitable. Even though the effects of the noises and the difference between the two lasers are considered, the twins can still reach good synchronization. Secure communication could be realized using the scheme of message-masking based on the synchronization of the chaotic dual-ring erbium-doped fibre lasers.

关键词: chaos, synchronization, secure communication, dual-ring erbium-doped laser

Abstract: We have investigated the synchronization of chaotic dual-ring erbium-doped fibre lasers using the delay feedback－injection scheme. Numerical simulation shows that two chaotic dual-ring erbium-doped fibre lasers can be well synchronized if the strengths of delay feedback and injection are suitable. Even though the effects of the noises and the difference between the two lasers are considered, the twins can still reach good synchronization. Secure communication could be realized using the scheme of message-masking based on the synchronization of the chaotic dual-ring erbium-doped fibre lasers.

Key words: chaos, synchronization, secure communication, dual-ring erbium-doped laser

中图分类号:  (Communication using chaos)

  • 05.45.Vx
42.55.Wd (Fiber lasers) 42.60.By (Design of specific laser systems)