TY - JOUR ID - TI - Synchronization in Optically Coupled Chaotic Systems by Optical Feedback التوافق في الأنظمة الفوضوية المقترنة بصريا بواسطة التغذية الخلفية البصرية AU - Younis Th. Younis AU - Salam K. Mousa AU - Sora F. Abdalla AU - Ahmed K. Ahmed AU - Kasim M. Jameel AU - Kais A. Al Naimee PY - 2017 VL - 13 IS - 1 SP - 11 EP - 16 JO - Iraqi Journal of Applied Physics المجلة العراقية للفيزياء التطبيقية SN - 18132065 23091673 AB - An experimentally observations of chaos synchronization have been investigated between two optically coupled laser diodes. Two schemes of optical injection, bidirectional and unidirectional optical injections have been used. One of the two lasers MLD exhibits optical chaos due to external optical feedback by fiber mirror and the other laser diode SLD exhibits optical chaos by optical injection from the first one. The chaotic dynamics of both lasers were a function of laser diodes drive current. Synchronization and Anti-synchronization between two coupled laser diodes have been observed, and ensured by different measurements like time series matching, correlation diagram (phase form) of amplitudes of coupled chaotic signals ,spectrum components coinciding of coupled chaotic signals have been used for both injection schemes. Cross correlation function has been used to measure quality of synchronization in unidirectional injection scheme and it was a function of slave laser diode's current.

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