Open AccessStochastic resonance for pulse signal modulated by noise in a single-mode laser system
Author(s) -
Zhang Li,
Xiuhua Yuan,
Wu Li
Publication year - 2012
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.61.110501
Subject(s) - stochastic resonance , pulse (music) , signal (programming language) , noise (video) , signal transfer function , physics , laser , mode (computer interface) , resonance (particle physics) , noise floor , relative intensity noise , optics , signal to noise ratio (imaging) , acoustics , computer science , noise reduction , atomic physics , telecommunications , noise measurement , analog signal , semiconductor laser theory , artificial intelligence , detector , image (mathematics) , programming language , operating system , transmission (telecommunications)
A new model of stochastic resonance, in which the pulse signal is modulated by noise, is established for a single-mode laser system. The corresponding intensity correlation function and the output signal-to-noise ratio of the system are calculated in the linear approximation. The phenomena of stochastic resonance are thoroughly discussed. Results reveal that due to the pulse signal modulated by noise, the single-mode laser exhibits a novel stochastic resonance phenomenon, that is, the optimization or the restraint of output signal-to-noise ratio can be controlled by the adjustment of the pulse signal period T.