Synchronization in networks of coupled hyperchaotic CO2 lasers
Abstract
A non-autonomous dynamical system is proposed to study the synchronization in networks of mutually coupled optically modulated hyperchaotic CO2 lasers. By the method of master stability function (MSF) it is shown that the stable synchronous state can be reached for both the ring of diffusively coupled (RDC) and star-coupled (SC) networks of at most 24 nodes or oscillators. A numerical simulation of the coupled 24 hyperchaotic CO2 lasers is also performed to show that the corresponding synchronization error 10-6. Furthermore, the chimera states of the networks are found to coexist in some intervals of time and the coupling strengths where the networks are not synchronized, implying that the synchronization occurs only in some specific ranges of values of the coupling strengths.
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