Synchronization and bidirectional communication without delay line using strong mutually coupled sem

• 作 者: 李光辉 王安帮 冯野 汪洋
• 机 构: Physics Department,College of Science,Taiyuan University of Technology,
• 出 处: Chinese Physics B
• 发表日期: 2010年07期
• 关键词: bidirectional message mutually deviation chaotic numerically lifetime counterpar

This paper numerically demonstrates synchronization and bidirectional communication without delay line by using two semiconductor lasers with strong mutual injection in a face-to-face configuration.These results show that both of the two lasers’ outputs synchronize with their input chaotic carriers.In addition,simulations demonstrate that this kind of synchronization can be used to realize bidirectional communications without delay line.Further studies indicate that within a small deviation in message amplitudes of two sides (±6%),the message can be extracted with signal-noise-ratio more than 10 dB;and the signal-noise-ratio is extremely sensitive to the message rates mismatch of two sides,which may be used as a key of bidirectional communication.

This paper numerically demonstrates synchronization and bidirectional communication without delay line by using two semiconductor lasers with strong mutual injection in a face-to-face configuration. These results show that both of the two lasers’ outputs synchronize with their input chaotic carriers. In addition, simulations demonstrate that this kind of synchronization can be used to realize bidirectional communications without delay line. Future studies indicate that within a small deviation in message amplitudes of two sides (± 6%), the message can be extracted with signal-noise-ratio more than 10 dB; and the signal-noise-ratio is extremely sensitive to the message rates mismatch of two sides, which may be used as a key of bidirectional communication.