1.
Phys Rev E Stat Nonlin Soft Matter Phys
; 83(2 Pt 2): 026107, 2011 Feb.
Artigo
em Inglês
| MEDLINE
| ID: mdl-21405889
RESUMO
We study the effect of asymmetric coupling strengths on the onset of oscillations in delay-coupled nonlinear systems. Our experiment consists of two wide-band optoelectronic devices that are cross-coupled. We find that oscillations appear in the system when the product of the two coupling strengths exceeds a critical value. Beyond the oscillation threshold, the oscillation amplitudes grow smoothly and we find a scaling law that describes the dependence of the amplitude on the coupling strengths. The observations are in good agreement with predictions from linear stability analysis and normal form theory.