Self-trapping threshold in disordered nonlinear photonic lattices

Uta Naether, M. Heinrich, Y. Lahini, S. Nolte, R.A. Vicencio, M. I. Molina and A. Szameit
OPTICS LETTERS 38, 9 (2013)


We investigate numerically and experimentally the influence of coupling disorder on the self-trapping dynamics in nonlinear one-dimensional optical waveguide arrays. The existence of a lower and upper bound of the effective average propagation constant allows for a generalized definition of the threshold power for the onset of soliton localization. When compared to perfectly ordered systems, this threshold is found to decrease in the presence of coupling disorder.