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Proceedings Paper

The optical Fano resonance in asymmetric dimer metamaterial
Author(s): Ndubuisi E. J. Omaghali; Volodymyr Tkachenko; Antonello Andreone; Giancarlo Abbate
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Paper Abstract

We study the sharp Fano-type resonance in a dimer metamaterial based on nanorods with different lengths. Breaking the length symmetry results in the excitation of a dark mode that weakly couples to the free space. Interference between the dark mode and the higher frequency bright mode gives rise to the peculiar asymmetric and sharp profile of the resonance. The steep dispersion and high sensitivity to slight variations of the dielectric environment of this resonance envisage the possible application of the asymmetric dimer metamaterial as an optical sensor for chemical or biological analysis.

Paper Details

Date Published: 1 May 2012
PDF: 7 pages
Proc. SPIE 8423, Metamaterials VII, 842304 (1 May 2012); doi: 10.1117/12.922621
Show Author Affiliations
Ndubuisi E. J. Omaghali, Univ. degli Studi di Napoli Federico II (Italy)
CNR-SPIN (Italy)
Volodymyr Tkachenko, Univ. degli Studi di Napoli Federico II (Italy)
CNR-SPIN (Italy)
Antonello Andreone, Univ. degli Studi di Napoli Federico II (Italy)
CNR-SPIN (Italy)
Giancarlo Abbate, Univ. degli Studi di Napoli Federico II (Italy)
CNR-SPIN (Italy)


Published in SPIE Proceedings Vol. 8423:
Metamaterials VII
Allan D. Boardman; Nigel P. Johnson; Richard W. Ziolkowski, Editor(s)

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