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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 17 — Sep. 1, 2011
  • pp: 3326–3328

Dielectric supported ring-shaped metal disks on a metal film for ultrasensitive refractive index sensing

Yang Gu, Qiuze Li, and Guo Ping Wang  »View Author Affiliations


Optics Letters, Vol. 36, Issue 17, pp. 3326-3328 (2011)
http://dx.doi.org/10.1364/OL.36.003326


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Abstract

We experimentally report a magnetic plasmonic metamaterial, which is constructed with a metal ring-shaped disk array supported by a dielectric layer on a metal film for high sensitive refractive index sensing. An ultrasensitive refractive index sensitivity of about 1842 nm per refractive index unit is achieved through the reflection spectrum measurement. We attribute the high sensitivity to greatly enhanced electric field intensity and its large spatial overlapping with the surrounding medium to sense. The present plasmonic structure provides an effective way for high sensitive chip-based biochemical sensors and integrated devices.

© 2011 Optical Society of America

OCIS Codes
(090.0090) Holography : Holography
(130.6010) Integrated optics : Sensors
(260.5740) Physical optics : Resonance
(160.3918) Materials : Metamaterials

ToC Category:
Integrated Optics

History
Original Manuscript: June 16, 2011
Manuscript Accepted: July 27, 2011
Published: August 19, 2011

Virtual Issues
Vol. 6, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Yang Gu, Qiuze Li, and Guo Ping Wang, "Dielectric supported ring-shaped metal disks on a metal film for ultrasensitive refractive index sensing," Opt. Lett. 36, 3326-3328 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-17-3326

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