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

• 来源期刊: 中国物理(英文版)
• 关键词: digital communication multi-mode laser two-dimensional messages chaotic synchronization
• 年，卷（期）: 2005,（11）
• 页码范围: 2196-2201
• 页数: 6页
• 语种: 英文

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.