Open AccessEffects of time period modulation of the noise correlation intensity and bias signal modulation of the noise on stochastic resonance of a single-mode laser
Author(s) -
Deyi Chen,
Wang Zhong-Long
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.2907
Subject(s) - stochastic resonance , noise (video) , signal (programming language) , physics , modulation (music) , signal transfer function , relative intensity noise , intensity (physics) , noise floor , optics , colors of noise , signal to noise ratio (imaging) , acoustics , laser , noise measurement , computer science , noise reduction , analog signal , telecommunications , semiconductor laser theory , transmission (telecommunications) , artificial intelligence , image (mathematics) , programming language
In the case of the noises modulated by the bias signal, the stochastic resonance of a single-mode laser driven by two colored noises with time period modulation correlation intensity is investigated. By means of the linear approximation method, we calculate the output signal to-noise ratio. The evolution of the output signal to-noise ratio with the self-correlation time of the noises and noise intensity and bias signal is discussed. It is found that the evolution of the output signal to-noise ratio with the pump noise intensity and self-correlation time presents the stochastic resonance. The peak of the stochastic resonance is decreased by the bias signal. Thus we should control the intensity of the bias signal in practice.