We control the diffusion of light in a disordered photonic waveguide by modulating the waveguide geometry. In a single waveguide of varying cross-section, the diffusion coefficient changes spatially in two dimensions due to localization effects. The intensity distribution inside the waveguide agrees with the prediction of the self-consistent theory of localization. Our work shows that wave diffusion can be efficiently manipulated without modifying the structural disorder.
R. Sarma et al., "Control of Light Diffusion in a Disordered Photonic Waveguide," Applied Physics Letters, vol. 105, no. 4, pp. 041104-1-041104-4, American Institute of Physics (AIP), Jul 2014.
The definitive version is available at https://doi.org/10.1063/1.4891757
Keywords and Phrases
Intensity Distribution; Light Diffusion; Localization Effect; Photonic Waveguides; Structural Disorders; Two-dimension; Wave Diffusion; Waveguide Geometry
International Standard Serial Number (ISSN)
Article - Journal
© 2014 American Institute of Physic (AIP), All rights reserved.