Power dependent switching of nonlinear trapping by local photonic   potentials
  We study experimentally and numerically the nonlinear scattering of wave packets by local multi-site guiding centers embedded in a continuous dielectric medium, as a function of the input power and angle of incidence. The extent of trapping into the linear modes of different sites is manipulated as a function of both the input power and incidence angle, demonstrating power-controlled switching of nonlinear trapping by local photonic potentials. 
Y. Shavit, Y. Linzon, S. Bar-Ad, R. Morandotti, M. Volatier-Ravat, V.   Aimez, R. Ares