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

作　　者：颜森林 

机构地区：[1]Department of Physics Nanjing Xiaozhuang College, Nanjing 210017

出　　处：《Chinese Optics Letters》2005年第5期283-286,共4页中国光学快报（英文版）

基　　金：This work was supported by the Education Department of Jiangsu Province (No. 04KJD520084 and 02KJD510019).

摘　　要：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.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.

关 键 词：Chaos theory CRYPTOGRAPHY Decoding Optical communication Quantum well lasers Security of data Signal receivers Synchronization Transmitters 

分 类 号：TN911[电子电信—通信与信息系统]