Experimental evidence of van der Pol-Fitzhugh-Nagumo dynamics in semiconductor optical amplifiers

Thermo-optical pulsing in semiconductor amplifiers is experimentally shown to correspond to a very common excitable scenario (the van der Pol-Fitzhugh-Nagumo system). Self-sustained oscillations appear in the sequence predicted by this simple dynamical model as we change either the injection level o...

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Published inPhysical review. E, Statistical, nonlinear, and soft matter physics Vol. 68; no. 3 Pt 2; p. 036209
Main Authors Barland, Stéphane, Piro, Oreste, Giudici, Massimo, Tredicce, Jorge R, Balle, Salvador
Format Journal Article
LanguageEnglish
Published United States 01.09.2003
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Summary:Thermo-optical pulsing in semiconductor amplifiers is experimentally shown to correspond to a very common excitable scenario (the van der Pol-Fitzhugh-Nagumo system). Self-sustained oscillations appear in the sequence predicted by this simple dynamical model as we change either the injection level or the bias current. Periodic modulation of these parameters leads to the characteristic phase-locking structure. Furthermore, coherence resonance is observed when external noise is added to the system.
ISSN:1539-3755
DOI:10.1103/PhysRevE.68.036209