Phase Chaos Synchronization of Semiconductor Lasers Driven by a Common Signal
This study presents a phase chaos synchronization method based on common signal-driven semiconductor lasers.This method minimizes the impact of cavity mode hopping on phase difference in traditional master-slave synchronization structures,thereby improving the stability of phase chaos synchronization.Under back-to-back conditions,the parameter conditions for achieving a stable phase chaos synchronization are identified.With the injection intensity of 0.15,optical-frequency detuning of-2 GHz,and laser linewidth of 2.5 MHz,a phase chaos synchronization with a standard deviation of 0.015π can be achieved.Further analysis is conducted on the impact of long-distance fiber optic transmission on the stability of phase chaos synchronization.A stable phase chaos synchronization with a standard deviation of 0.04π is obtained under 160 km fiber optic transmission.
semiconductor laserchaos laserchaos synchronizationphase synchronizationsecure communication