Anderson localization in a periodic photonic lattice with a disordered   boundary
  We investigate experimentally the light evolution inside a two-dimensional finite periodic array of weakly- coupled optical waveguides with a disordered boundary. For a completely localized initial condition away from the surface, we find that the disordered boundary induces an asymptotic localization in the bulk, centered around the initial position of the input beam. 
Uta Naether, Julia M. Meyer, Simon St\"utzer, Andreas T\"unnermann,   Stefan Nolte, Mario I. Molina, and Alexander Szameit
physics.optics