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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 15, Iss. 11 — Nov. 1, 1998
  • pp: 2674–2680

Stochastic resonance and noise-enhanced transmission of spatial signals in optics: the case of scattering

Fabrice Vaudelle, José Gazengel, Geneviève Rivoire, Xavier Godivier, and Francois Chapeau-Blondeau  »View Author Affiliations


JOSA B, Vol. 15, Issue 11, pp. 2674-2680 (1998)
http://dx.doi.org/10.1364/JOSAB.15.002674


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Abstract

The nonlinear effect of noise-enhanced signal transmission by means of stochastic resonance in optics is studied. We investigate this effect for the novel case of spatial signals or images. With a theoretical model involving a threshold nonlinearity we describe a mechanism whereby the transmission of an image can be improved by the addition of noise. We argue that such a nonlinear mechanism can operate in different types of light scattering. With a stimulated Raman scattering experiment we verify the existence of a stochastic resonance effect in the transmission of a laser image; we show that maximal efficacy is obtained with the assistance of a speckle of sufficient intensity. The results extend the scope of stochastic resonance and can serve as a basis for further development of the effect in optics.

© 1998 Optical Society of America

OCIS Codes
(030.4280) Coherence and statistical optics : Noise in imaging systems
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(100.0100) Image processing : Image processing
(110.2970) Imaging systems : Image detection systems
(190.0190) Nonlinear optics : Nonlinear optics
(190.5650) Nonlinear optics : Raman effect

Citation
Fabrice Vaudelle, José Gazengel, Geneviève Rivoire, Xavier Godivier, and Francois Chapeau-Blondeau, "Stochastic resonance and noise-enhanced transmission of spatial signals in optics: the case of scattering," J. Opt. Soc. Am. B 15, 2674-2680 (1998)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-15-11-2674


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