Open AccessTheory and simulation of dual-channel optical chaotic communication system
Author(s) -
Guang-Qiong Xia,
Zheng-Mao Wu,
Jiagui Wu
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.003445
Subject(s) - chaotic , computer science , transmission (telecommunications) , channel (broadcasting) , optics , signal (programming language) , modulation (music) , computer simulation , dual (grammatical number) , optical communication , communications system , electronic engineering , telecommunications , physics , acoustics , simulation , art , literature , artificial intelligence , programming language , engineering
A theoretical model based on a novel experiment scheme of dual-channel optical chaotic communication has been presented, and is proved to be reasonable by comparing the numerical simulations with the experimental results. After deducing the transmission function of semiconductor laser by small-signal analysis, how to reasonably select the system parameters has been given in order to realize the effective transmission of signal. Moreover, the cross talk between two channels has been analyzed quantitatively. For a 250MHz modulation message, the numerical simulation shows that it can be hidden efficiently during the transmission and decoded easily in the receiver.