Open AccessPerfect transmission through Anderson localized systems mediated by a cluster of localized modes
Author(s) -
Wonjun Choi,
Q-Han Park,
Wonshik Choi
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.020721
Subject(s) - anderson localization , physics , resonance (particle physics) , transmission (telecommunications) , interference (communication) , scattering , energy flow , wave propagation , evanescent wave , optics , cluster (spacecraft) , energy (signal processing) , range (aeronautics) , condensed matter physics , quantum mechanics , telecommunications , materials science , channel (broadcasting) , computer science , composite material , programming language
In a strongly scattering medium where Anderson localization takes place, constructive interference of local non-propagating waves dominate over the incoherent addition of propagating waves. This results in the disappearance of propagating waves within the medium, which significantly attenuates energy transmission. In this numerical study performed in the optical regime, we systematically found resonance modes, called eigenchannels, of a 2-D Anderson localized system that allow for the near-perfect energy transmission. We observed that the internal field distribution of these eigenchannels exhibit dense clustering of localized modes. This strongly suggests that the clustered resonance modes facilitate long-range energy flow of local waves. Our study explicitly elucidates the interplay between wave localization and transmission enhancement in the Anderson localization regime.