Nonlinear unidirectional coupler in the photorefractive medium with purely diffusion nonlinearity

Victor A. Aleshkevich; Yaroslav V. Kartashov; Victor A. Vysloukh

doi:10.1117/12.475930

24 July 2002 Nonlinear unidirectional coupler in the photorefractive medium with purely diffusion nonlinearity

Victor A. Aleshkevich, Yaroslav V. Kartashov, Victor A. Vysloukh

Author Affiliations +

Proceedings Volume 4751, ICONO 2001: Nonlinear Optical Phenomena and Nonlinear Dynamics of Optical Systems; (2002) https://doi.org/10.1117/12.475930
Event: XVII International Conference on Coherent and Nonlinear Optics (ICONO 2001), 2001, Minsk, Belarus

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.

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Victor A. Aleshkevich, Yaroslav V. Kartashov, and Victor A. Vysloukh "Nonlinear unidirectional coupler in the photorefractive medium with purely diffusion nonlinearity", Proc. SPIE 4751, ICONO 2001: Nonlinear Optical Phenomena and Nonlinear Dynamics of Optical Systems, (24 July 2002); https://doi.org/10.1117/12.475930

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