Stochastic resonance on two-dimensional arrays of bistable oscillators in a nonlinear optical system

摘要: We describe an experimental realization of stochastic resonance in two-dimensional arrays coupled nonlinear oscillators. The experiment is implemented using optoelectronic system composed a liquid crystal light valve feedback loop with external, spatially variable noise being added through display. behavior the differs from previously studied uniform arrays, showing high signal-to-noise ratio at output for broad range input noise. show that this qualitatively same as exhibited by computer models where elements array have distribution biases applied to their switching thresholds.