Journal
OPTICS LETTERS
Volume 37, Issue 23, Pages 4985-4987Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.004985
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Funding
- Australian Research Council
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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 photonic crystal structure. (C) 2012 Optical Society of America
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