中国物理B ›› 2007, Vol. 16 ›› Issue (11): 3271-3278.doi: 10.1088/1009-1963/16/11/021

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Study of dual-directional high rate secure communication systems using chaotic multiple-quantum-well lasers

颜森林   

  1. Department of Physics, Nanjing Xiaozhuang College, Nanjing 210017, China
  • 出版日期:2007-11-20 发布日期:2007-11-20
  • 基金资助:
    Project supported by Education Department of Jiangsu Province of China (Grant No 06KJD140111).

Study of dual-directional high rate secure communication systems using chaotic multiple-quantum-well lasers

Yan Sen-Lin(颜森林)   

  1. Department of Physics, Nanjing Xiaozhuang College, Nanjing 210017, China
  • Online:2007-11-20 Published:2007-11-20
  • Supported by:
    Project supported by Education Department of Jiangsu Province of China (Grant No 06KJD140111).

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摘要： A scheme of synchronized injection multi-quantum-well (MQW) laser system using optical coupling-feedback is presented for performing chaotic dual-directional secure communication. The performance characterization of chaos masking is investigated theoretically, the equation of synchronization demodulation is deduced and its root is also given. Chaos masking encoding with a rate of 5\,Gbit/s and a modulation frequency of 1\,GHz, chaos modulation with a rate of 0.2\,Gbit/s and a modulation frequency of 0.2\,GHz and chaos shifting key with a rate of 0.2\,Gbit/s are numerically simulated, separately. The ratio of the signal to the absolute synchronous error and the time for achieving synchronous demodulation are analysed in detail. The results illustrate that the system has stronger privacy and good performances so that it can be applied in chaotic dual-directional high rate secure communications.

关键词: chaos, MQW laser, secure, dual-directional communication

Abstract: A scheme of synchronized injection multi-quantum-well (MQW) laser system using optical coupling-feedback is presented for performing chaotic dual-directional secure communication. The performance characterization of chaos masking is investigated theoretically, the equation of synchronization demodulation is deduced and its root is also given. Chaos masking encoding with a rate of 5 Gbit/s and a modulation frequency of 1 GHz, chaos modulation with a rate of 0.2 Gbit/s and a modulation frequency of 0.2 GHz and chaos shifting key with a rate of 0.2 Gbit/s are numerically simulated, separately. The ratio of the signal to the absolute synchronous error and the time for achieving synchronous demodulation are analysed in detail. The results illustrate that the system has stronger privacy and good performances so that it can be applied in chaotic dual-directional high rate secure communications.

Key words: chaos, MQW laser, secure, dual-directional communication

中图分类号:  (Semiconductor lasers; laser diodes)

  • 42.55.Px
05.45.Vx (Communication using chaos) 05.45.Xt (Synchronization; coupled oscillators) 42.65.Sf (Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics) 42.79.Sz (Optical communication systems, multiplexers, and demultiplexers?)