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Soliton steering by longitudinal modulation of the nonlinearity in waveguide arrays
Gaetano Assanto1, Luis A Cisneros, Antonmaria A Minzoni
1NooEL-Nonlinear Optics and OptoElectronics Lab, Department of Electronic Engineering, University of Rome Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy.
Abstract:
We show how discrete solitary waves in one and two-dimensional waveguide arrays can be steered across the lattice via the introduction of a longitudinal periodic modulation of the nonlinear response. Through parametric energy transfer from the modulation to the solitary wave, the latter can increase its width and overcome the Peierls-Nabarro potential to propagate freely.
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