Anderson localization in bi-layer array with compositional disorder: Conventional photonic crystals versus metamaterials

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. (C) 2010 Elsevier B.V. All rights reserved.