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Optical vortices at Fano resonances

Xu, Yi; Desyatnikov, Anton S.; Miroshnichenko, Andrey


We study the transmission properties of a one-dimensional array with intersite side-coupled defect and demonstrate that, as the system undergoes sharp Fano resonance, it exhibits geometry-induced vorticity of the energy flux. The optical vortex inverts its handedness at the Fano resonance, revealing a strong link between two phenomena, both being of interference origin. Our approach is quite general and can be applied to a variety of systems; as an example we demonstrate a similar effect in...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Optics Letters
DOI: 10.1364/OL.37.004985


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