Experimental and theoretical study of the noise-induced gain degradation in vibrational resonance.
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.
Chizhevsky
V N
VN
Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy. vnc@dragon.bas-net.by
Giacomelli
Giovanni
G