PROPAGATION OF A SPATIAL SOLITON IN A SYSTEM OF TUNNELING-COUPLED OPTICAL WAVE-GUIDES WITH A VARIABLE COUPLING COEFFICIENT

The problem of the propagation of a spatial soliton in a system of tun neling-coupled optical waveguides is studied. The tunneling coupling c oefficient is assumed to be modulated in a transverse direction. The a diabatic dynamics is studied for the case of periodic modulation of th e tunneling coupling coefficient. The stationary points for the beam p arameters are found. The effective potential is calculated for the cen ter of the beam in the equivalent-particle model. The condition for re sonance emission of waves by a soliton is obtained. (C) 1998 American Institute of Physics. [S1063-7842(98)00106-8].