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DY: Fachverband Dynamik und Statistische Physik

DY 26: Nonlinear Dynamics II

DY 26.2: Vortrag

Mittwoch, 16. März 2011, 16:45–17:00, ZEU 255

Asymmetries in delay coupled systems: mismatches and their impact on dynamics and synchronization of two coupled lasers — •Konstantin Hicke^1,2, Otti D’Huys³, Valentin Flunkert², Eckehard Schöll², Jan Danckaert^3,4, and Ingo Fischer¹ — ¹Instituto de Fisica Interdisciplinar y Sistemas Complejos, IFISC (UIB-CSIC), Campus Universitat de les Illes Balears, E-07122 Palma de Mallorca, Spain — ²Institut für Theoretische Physik, TU Berlin, Hardenbergstraße 36, 10623 Berlin, Germany — ³Department of Physics (DNTK), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium — ⁴Department of Applied Physics and Photonics (TONA), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium

We study the dynamics and synchronization properties of two mutually delay-coupled semiconductor lasers. We concentrate on a configuration in which the lasers are coherently coupled via a partially transparent mirror. We investigate the influence of mismatches of the delay times and of the coupling strengths for self-feedback and coupling. We show that the former mismatch alters the lasers’ dynamics significantly but does not affect the synchronization quality. The latter mismatch has a considerable effect on the stability of the zero-lag synchronized state of the system, but does not change the dynamics within the synchronization manifold. Finally, we discuss the implications of our analytical and numerical results.