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Chaos synchronization in networks of delay-coupled lasers: Role of the coupling phases.

Flunkert, V. and Schöll, E.
New Journal of Physics 14, 033039 (1-21) (2012)

We derive rigorous conditions for the synchronization of all- optically coupled lasers. In particular, we elucidate the role of the optical coupling phases for synchronizability by systematically discussing all possible network motifs containing two lasers with delayed coupling and feedback. By these means we explain previous experimental findings. Further, we study larger networks and elaborate optimal conditions for chaos synchronization. We show that the relative phases between lasers can be used to optimize the effective coupling matrix.