Experimental and theoretical study of the noise-induced gain degradation in vibrational resonance

Year: 2004

Authors: Chizhevsky VN., Giacomelli G.

Autors Affiliation: Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy;
B.I. Stepanov Institute of Physics, NASB, 220072 Minsk, Belarus;
Istituto Nazionale di Fisica della Materia, unita di Firenze, Firenze, Italy

Abstract: We present the results of theoretical and experimental investigations of the effect of additive noise on vibrational resonance in a bistable system driven by two periodic forces with very different frequencies. The phenomenon shows up as a parametric amplification of the low-frequency signal depending on the amplitude of high-frequency modulation. A scaling law for noise-induced decreasing of the gain factor, found theoretically, is compared with the experimental results obtained in a bistable vertical cavity surface emitting laser.

Journal/Review: PHYSICAL REVIEW E

Volume: 70 (6)      Pages from: 62101-1  to: 62101-4

More Information: This work has been partially funded by the MIUR project FIRB No. RBNE01CW3M̱001.
KeyWords: Gain factor; High-frequency (HF) modulation; Stochastic resonance (SR); Vibrational resonance
DOI: 10.1103/PhysRevE.70.062101

Citations: 34
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