Unidirectional and Bidirectional Synchronization and Control in Chaotic Diode Laser

Abstract

This study aimed to control chaos from Amplitude modulation optoelectronicdelayed feedback of diode laser, under 1GHz modulation frequency. Also to control unidirectional synchronization and bidirectional synchronization by using Amplitude modulation optoelectronicdelayed feedback of diode laser. The method which we used is simulation modeling adaptive the configuration of theoptoelectronicdelayed feedback of diode laser with amplitude modulation by using Berkeley Madonna software and Origin. The results showed the effect of small window modulation amplitude on the output dynamics when all other control parameters are kept constant at the chaotic operating condition. The transition from a chaotic spiking to stationary steady state and eventually periodic self-oscillations when the amplitude of the modulation varied was explained. Instability of the system was achieved. Also we derive and discuss synchronization conditions for (unidirectional,bidirectional)optically coupled lasers. These conditions ensure the existence and stability of a completely synchronized solution,i: e: perfect synchronization of identical lasers. A comparison between unidirectional and mutual coupling, for the identical synchronization case when all the other control parameter are kept constant was demonstrated.