Two-dimensional spatiotemporal complexity in dual-delayed nonlinear feedback systems: Chimeras and dissipative solitons.
Fiche publication
Date publication
octobre 2018
Journal
Chaos (Woodbury, N.Y.)
Auteurs
Membres identifiés du Cancéropôle Est :
Dr LARGER Laurent
Tous les auteurs :
Brunner D, Penkovsky B, Levchenko R, Schöll E, Larger L, Maistrenko Y
Lien Pubmed
Résumé
We demonstrate for a photonic nonlinear system that two highly asymmetric feedback delays can induce a variety of emergent patterns which are highly robust during the system's global evolution. Explicitly, two-dimensional chimeras and dissipative solitons become visible upon a space-time transformation. Switching between chimeras and dissipative solitons requires only adjusting two system parameters, demonstrating self-organization exclusively based on the system's dynamical properties. Experiments were performed using a tunable semiconductor laser's transmission through a Fabry-Pérot resonator resulting in an Airy function as nonlinearity. Resulting dynamics were bandpass filtered and propagated along two feedback paths whose time delays differ by two orders of magnitude. An excellent agreement between experimental results and the theoretical model given by modified Ikeda equations was achieved.
Référence
Chaos. 2018 Oct;28(10):103106