Title :
Communication using synchronization of optical-feedback-induced chaos in semiconductor lasers
Author :
Liu, Y. ; Chen, H.F. ; Liu, J.M. ; Davis, P. ; Aida, T.
Author_Institution :
ATR Adaptive Commun. Res. Labs., Kyoto, Japan
Abstract :
A communication system based on the synchronization of optical chaos in semiconductor lasers is proposed. The optical chaos is generated in a single-mode semiconductor laser with external ring optical feedback. Synchronization of chaos is performed by a direct optical-injection scheme that consists of a transmitter laser with an external optical feedback and a receiver laser with optical injection from the transmitter laser. Both numerical and experimental results on synchronization of giga-hertz chaotic signals are presented. Direct encoding of 2.5 Gbps messages on the chaotic waveform is numerically demonstrated. The bit-error rate shows a sensitive dependence on the frequency detuning.
Keywords :
chaotic communication; error statistics; laser feedback; optical chaos; optical communication; semiconductor lasers; synchronisation; 2.5 Gbit/s; GHz chaotic signals; bit-error rate; direct encoding; direct optical-injection scheme; external ring optical feedback; frequency detuning; optical communication system; optical-feedback-induced chaos; receiver laser; semiconductor lasers; synchronization; transmitter laser; Chaotic communication; Encoding; Frequency synchronization; Laser feedback; Optical feedback; Optical receivers; Optical sensors; Optical transmitters; Ring lasers; Semiconductor lasers;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
DOI :
10.1109/TCSI.2001.972855
