Amplitude-phase coupling drives chimera states in globally coupled laser networks

Abstract

For a globally coupled network of semiconductor lasers with delayed optical feedback, we demonstrate the existence of chimera states. The domains of coherence and incoherence that are typical for chimera states are found to exist for the amplitude, phase, and inversion of the coupled lasers. These chimera states defy several of the previously established existence criteria. While chimera states in phase oscillators generally demand nonlocal coupling, large system sizes, and specially prepared initial conditions, we find chimera states that are stable for global coupling in a network of only four coupled lasers for random initial conditions. The existence is linked to a regime of multistability between the synchronous steady state and asynchronous periodic solutions. We show that amplitude-phase coupling, a concept common in different fields, is necessary for the formation of the chimera states.

5 pages, 5 figures

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Cited by in corpus (11)

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• A model bridging chimera state and explosive synchronization
• Multi-clustered chimeras in large semiconductor laser arrays with nonlocal interactions
• Long-range interaction induced collective dynamical behaviors
• Amplitude mediated spiral chimera pattern in a nonlinear reaction-diffusion system
• Chimera states in a network-organized public goods game with destructive agents
• Scaling law of transient lifetime of chimera states under dimension-augmenting perturbations