Trapping of discrete solitons by defects in nonlinear waveguide arrays.
We study the trapping process of moving discrete solitons by linear and nonlinear impurities embedded in a one-dimensional nonlinear cubic array. We show that there exist specific values for the strength of the impurity and for the angle where a strong trapping is obtained. We introduce a criterion for studying the scattering dynamics of localized waves in nonlinear extended systems where the trapping of energy takes place.
Morales-Molina
Luis
L
Max-Planck-Institut für Physik Komplexer Systeme, Nöthnilzer Strasse 38, D-01187 Dresden, Germany. lmolina@pks.mpg.de
Vicencio
Rodrigo A
RA