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Title: Synchronization in Nonlinear Optical Networks: Chaos, Communication and Chimeras in the Laboratory

Rajarshi Roy

Short Abstract
We explore synchronization in networks of coupled nonlinear optoelectronic oscillators in our laboratory. Numerical models are developed and simulations are compared with experimental observations to understand how real networks synchronize and desynchronize as coupling coefficients are varied. Convergence to synchrony is found to depend on the network topology. We investigate the dynamics of these coupled nonlinear time-delayed systems in different configurations and periodic as well as chaotic regimes. Next, we report results of experiments on large arrays of coupled-map lattices with liquid crystal spatial light modulators and the observation of chimera-like states when nonlocal coupling is realized. The relevance of such states to neuronal networks will be discussed.