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Proceedings Paper

Nonlinear unidirectional coupler in the photorefractive medium with purely diffusion nonlinearity
Author(s): Victor A. Aleshkevich; Yaroslav V. Kartashov; Victor A. Vysloukh
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Paper Abstract

We consider switching characteristics of the nonlinear unidirectional coupler embedded in the photorefractive medium with purely diffusion nonlinearity. Transmission characteristics for both two- and three-waveguide couplers are presented. It is shown that the part of energy transmitted into the second waveguide in two-waveguide coupler monotonically decreases with increase of input energy i.e. no threshold energy value exists. It is also shown that due to the specific character of diffusion nonlinearity transmission characteristics of the three- waveguide coupler strongly depends on the relative disposition of the input waveguide.

Paper Details

Date Published: 24 July 2002
PDF: 10 pages
Proc. SPIE 4751, ICONO 2001: Nonlinear Optical Phenomena and Nonlinear Dynamics of Optical Systems, (24 July 2002); doi: 10.1117/12.475930
Show Author Affiliations
Victor A. Aleshkevich, M.V. Lomonosov Moscow State Univ. (Russia)
Yaroslav V. Kartashov, M.V. Lomonosov Moscow State Univ. (Russia)
Victor A. Vysloukh, Univ. Autonoma del Estado de Morelos (Mexico)


Published in SPIE Proceedings Vol. 4751:
ICONO 2001: Nonlinear Optical Phenomena and Nonlinear Dynamics of Optical Systems

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