Title

Anderson Localization And Nonlinearity In One-Dimensional Disordered Photonic Lattices

Abstract

We experimentally investigate the evolution of linear and nonlinear waves in a realization of the Anderson model using disordered one-dimensional waveguide lattices. Two types of localized eigenmodes, flat-phased and staggered, are directly measured. Nonlinear perturbations enhance localization in one type and induce delocalization in the other. In a complementary approach, we study the evolution on short time scales of δ-like wave packets in the presence of disorder. A transition from ballistic wave packet expansion to exponential (Anderson) localization is observed. We also find an intermediate regime in which the ballistic and localized components coexist while diffusive dynamics is absent. Evidence is found for a faster transition into localization under nonlinear conditions. © 2008 The American Physical Society.

Publication Date

1-10-2008

Publication Title

Physical Review Letters

Volume

100

Issue

1

Number of Pages

-

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1103/PhysRevLett.100.013906

Socpus ID

38849091474 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/38849091474

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