Experimental Observations of Group Synchrony in a System of Chaotic Optoelectronic Oscillators

TL;DR

This paper reports experimental evidence of group synchrony in a network of four chaotic optoelectronic oscillators with time delays, showing intra-group synchronization without intra-group coupling.

Contribution

It demonstrates a novel form of group synchrony in a controlled optoelectronic system, combining experimental, theoretical, and numerical analysis.

Findings

Groups of oscillators synchronize internally without intra-group coupling.

Different dynamics observed between the two groups due to parameter differences.

Experimental results align with theoretical and numerical models.

Abstract

We experimentally demonstrate group synchrony in a network of four nonlinear optoelectronic oscillators with time-delayed coupling. We divide the nodes into two groups of two each, by giving each group different parameters and by enabling only inter-group coupling. When coupled in this fashion, the two groups display different dynamics, with no isochronal synchrony between them, but the nodes in a single group are isochronally synchronized, even though there is no intra-group coupling. We compare experimental behavior with theoretical and numerical results.