Aperiodic signals processing via parameter-tuning stochastic resonance in a photorefractive ring cavity
- School of Science, Xi'an University of Post and Telecommunications, Xi'an, 710121 (China)
- Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119 (China)
Based on solving numerically the generalized nonlinear Langevin equation describing the nonlinear dynamics of stochastic resonance by Fourth-order Runge-Kutta method, an aperiodic stochastic resonance based on an optical bistable system is numerically investigated. The numerical results show that a parameter-tuning stochastic resonance system can be realized by choosing the appropriate optical bistable parameters, which performs well in reconstructing aperiodic signals from a very high level of noise background. The influences of optical bistable parameters on the stochastic resonance effect are numerically analyzed via cross-correlation, and a maximum cross-correlation gain of 8 is obtained by optimizing optical bistable parameters. This provides a prospective method for reconstructing noise-hidden weak signals in all-optical signal processing systems.
- OSTI ID:
- 22253198
- Journal Information:
- AIP Advances, Journal Name: AIP Advances Journal Issue: 4 Vol. 4; ISSN AAIDBI; ISSN 2158-3226
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aperiodic stochastic resonance with chaotic input signals in excitable systems
On the theory of signal filtration in a bistable moderately dissipating oscillatory system