中国物理B ›› 2005, Vol. 14 ›› Issue (11): 2196-2201.doi: 10.1088/1009-1963/14/11/009

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Digital communication of two-dimensional messages in a chaotic optical system

周云, 吴亮, 朱士群   

  1. School of Physical Science and Technology, Suzhou University,Suzhou 215006, China
  • 收稿日期:2005-02-23 修回日期:2005-04-14 出版日期:2005-11-20 发布日期:2005-11-20
  • 基金资助:
    Project supported by the Natural Science Foundation of Jiangsu Province, China (Grant No BK2001138).

Digital communication of two-dimensional messages in a chaotic optical system

Zhou Yun (周云), Wu Liang (吴亮), Zhu Shi-Qun (朱士群)   

  1. School of Physical Science and Technology, Suzhou University, Suzhou 215006, China
  • Received:2005-02-23 Revised:2005-04-14 Online:2005-11-20 Published:2005-11-20
  • Supported by:
    Project supported by the Natural Science Foundation of Jiangsu Province, China (Grant No BK2001138).

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摘要： The digital communication of two-dimensional messages is investigated when two solid state multi-mode chaotic lasers are employed in a master-slave configuration. By introducing the time derivative of intensity difference between the receiver (carrier) and the transmittal (carrier plus signal), several signals can be encoded into a single pulse. If one signal contains several binary bits, two-dimensional messages in the form of a matrix can be encoded and transmitted on a single pulse. With these improvements in secure communications using chaotic multi-mode lasers, not only the transmission rate can be increased but also the privacy can be enhanced greatly.

关键词: digital communication, multi-mode laser, two-dimensional messages, chaotic synchronization

Abstract: The digital communication of two-dimensional messages is investigated when two solid state multi-mode chaotic lasers are employed in a master-slave configuration. By introducing the time derivative of intensity difference between the receiver (carrier) and the transmittal (carrier plus signal), several signals can be encoded into a single pulse. If one signal contains several binary bits, two-dimensional messages in the form of a matrix can be encoded and transmitted on a single pulse. With these improvements in secure communications using chaotic multi-mode lasers, not only the transmission rate can be increased but also the privacy can be enhanced greatly.

Key words: digital communication, multi-mode laser, two-dimensional messages, chaotic synchronization

中图分类号:  (Communication using chaos)

  • 05.45.Vx
84.40.Ua (Telecommunications: signal transmission and processing; communication satellites) 05.45.Xt (Synchronization; coupled oscillators)