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Interaction of counterpropagating discrete solitons and nonlinear surface Tamm states in 1D waveguide arrays

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4 Author(s)
Smirnov, E. ; Clausthal Univ. of Technol., Clausthal-Zellerfeld ; Ruter, C.E. ; Stepic, M. ; Kip, D.

We have investigated interaction of counterpropagating discrete solitons and nonlinear surface Tamm states in a one-dimensional waveguide array in photorefractive lithium niobate. While for low input powers only weak interaction and formation of counterpropagating vector solitons and Tamm states is observed, for higher input powers a growing instability results in discrete lateral shifting of solitons. Numerical modelling shows three different regimes: propagation of vector solitons at low power, instability for intermediate power levels leading to discrete soliton shifting, and irregular temporal dynamics of the two beams for high input power.

Published in:

Lasers and Electro-Optics, 2007. CLEO 2007. Conference on

Date of Conference:

6-11 May 2007