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Phys. Rev. E 66, 036227 (2002) [11 pages]

Coupled optical excitable cells

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Alejandro M. Yacomotti* and Gabriel B. Mindlin
Departamento de Física, Facultad de Ciencias Exactas y Naturales, UBA, Ciudad Universitaria, Pabellón I (1428) Buenos Aires, Argentina

Massimo Giudici and Salvador Balle
Departamento de Física Interdisciplinar, Instituto Mediterráneo de Estudios Avanzados, Univesidad de las Islas Baleares, E-07071 Palma de Mallorca, Spain

Stephane Barland and Jorge Tredicce
Institut Non Linéaire de Nice, Centre National de la Recherche Scientifique, Unité Mixte de la Recherche 6618, 006560 Valbonne, France

Received 4 April 2002; published 27 September 2002

In this work we investigate experimentally the dynamics of two coupled optical excitable cells, namely, two semiconductor lasers with optical feedback. We analyze the dynamics observed in terms of the statistical properties of the time series and in terms of the phase space reconstruction from the data. We build a model based on a simple set of deterministic equations (on a two torus) plus noise in order to capture the essential features of the dynamics observed. We discuss the validity of our theoretical results in terms of families of excitable systems and coupling terms.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.66.036227
DOI:
10.1103/PhysRevE.66.036227
PACS:
05.45.-a, 42.65.Sf

*Email address: yaco@df.uba.ar