Anderson Localization in Metamaterials with Compositional Disorder
  The localization length has been derived for one-dimensional bi-layered structures with random perturbations in the refractive indices for each type of layers. Main attention is paid to the comparison between conventional materials and those consisting of mixed right-hand and left-hand materials. It is shown that the localization length is described by the universal expression for both cases. The analytical results are confirmed by numerical simulations. 
E.J.Torres-Herrera, F.M.Izrailev, and N.M.Makarov
cond-mat.dis-nn cond-mat.mes-hall