All-optical chaotic MQW laser repeater for long-haul chaotic communications

• 作 者: 颜森林
• 机 构: Department of Physics Nanjing Xiaozhuang College, Nanjing 210017
• 出 处: Chinese Optics Letters
• 发表日期: 2005年05期
• 关键词: chaotic transmitter decoding illustrate receiver numerically bandwidth transmit

We present an all-optical chaotic multi-quantum-well (MQW) laser repeater system to be used in long-haul chaotic communications. Chaotic synchronization is achieved among transmitter, repeater, and receiver. Chaotic repeater communications with a sinusoidal signal of 0.2-GHz modulation frequency and a digital signal of 0.4-Gb/s bit rate are numerically simulated, respectively. Calculation results illustrate that the signals are well decoded by the chaotic repeaters. Its bandwidth and the characteristics at much high bit rate are also analyzed. Simulation shows that the repeater can improve decoding quality, especially in higher bit rate chaotic communications.

Chaotic repeater communications with a sinusoidal signal of 0.2- GHz modulation frequency and a digital signal of 0.4-Gb / s bit rate are numerically simulated, respectively. Calculation results illustrate that the signals are well decoded by the chaotic repeaters. Its bandwidth and the characteristics at much high bit rate are also analyzed. Simulation shows that the repeater can improve decoding quality, especially in higher bit rate chaotic communications.