Coexistence of Josephson oscillations and novel self-trapping regime in optical waveguide arrays

Details Coexistence of Josephson oscillations and novel self-trapping regime in optical waveguide arrays Coexistence of Josephson oscillations and novel self-trapping regime in optical waveguide arrays

2006-04-20

arxiv.org/abs/nlin/0604045v2

Phys. Re. Lett., v.97, 143902 (2006)

Nonlinear Sciences

Pattern Formation and Solitons

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.97.143902

Considering the coherent nonlinear dynamics between two weakly linked optical waveguide arrays, we find the first example of coexistence of Josephson oscillations with a novel self-trapping regime. This macroscopic bistability is explained by proving analytically the simultaneous existence of symmetric, antisymmetric and asymmetric stationary solutions of the associated Gross-Pitaevskii equation. The effect is, moreover, illustrated and confirmed by numerical simulations. This property allows to conceive an optical switch based on the variation of the refractive index of the linking central waveguide.

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