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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 23 — Nov. 7, 2011
  • pp: 22974–22981

Fano resonance in dual-disk ring plasmonic nanostructures

Lifang Niu, Jing Bo Zhang, Yuan Hsing Fu, Shripad Kulkarni, and Boris Lukyànchuk  »View Author Affiliations


Optics Express, Vol. 19, Issue 23, pp. 22974-22981 (2011)
http://dx.doi.org/10.1364/OE.19.022974


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Abstract

A dual-disk ring (DDR) structure with broken symmetry and weakly dissipating material, silver, is proposed to achieve Fano resonance in visible wavelength range. Symmetry breaking of a metallic ring is realized by placing two disks inside the ring. The excitation of the Fano resonance is interpreted in terms of coupling of the ring and the dual-disk plasmonic modes. The potential of using an array of such DDR nano structures as a biochemical sensor is evaluated with the figure of merit (FOM). Based on our design and simulation, arrays with DDR structures are fabricated and the Fano resonance peak is observed in visible wavelength range of extinction spectra of individual silver DDR nanostructures.

© 2011 OSA

OCIS Codes
(160.4760) Materials : Optical properties
(220.0220) Optical design and fabrication : Optical design and fabrication
(240.6680) Optics at surfaces : Surface plasmons
(260.5740) Physical optics : Resonance
(220.4241) Optical design and fabrication : Nanostructure fabrication

ToC Category:
Optics at Surfaces

History
Original Manuscript: September 12, 2011
Revised Manuscript: October 7, 2011
Manuscript Accepted: October 11, 2011
Published: October 28, 2011

Citation
Lifang Niu, Jing Bo Zhang, Yuan Hsing Fu, Shripad Kulkarni, and Boris Lukyànchuk, "Fano resonance in dual-disk ring plasmonic nanostructures," Opt. Express 19, 22974-22981 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-23-22974


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References

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