  Coupled nonlinear Schrodinger systems describe some physical phenomena such
as the propagation in birefringent optical fibers, Kerr-like photorefractive
media in optics and Bose-Einstein condensates. In this paper, we study the
existence of concentrating solutions of a singularly perturbed coupled
nonlinear Schrodinger system, in presence of potentials. We show how the
location of the concentration points depends strictly on the potentials.
