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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 3, Iss. 9 — Sep. 8, 2008

Increased surface plasmon resonance sensitivity with the use of double Fourier harmonic gratings

Nicolas Bonod, Evgeny Popov, and Ross C. McPhedran  »View Author Affiliations


Optics Express, Vol. 16, Issue 16, pp. 11691-11702 (2008)
http://dx.doi.org/10.1364/OE.16.011691


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Abstract

A biomolecular sensor consisting of a thin metallic grating deposited on a glass prism is studied in the formalism of poles and zeros of the scattering matrix. Surface plasmon resonance is used to increase the sensitivity of the device with respect to a variation of the refractive index of the substrate. It is shown that a direct coupling between counter propagating surface plasmons using double-harmonic Fourier gratings leads to an enhancement of the sensitivity. The result of the stronger coupling is the transfer of the working point from the lower to the upper edge of the band gap in the dispersion diagram.

© 2008 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(130.6010) Integrated optics : Sensors
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

History
Original Manuscript: May 20, 2008
Revised Manuscript: July 14, 2008
Manuscript Accepted: July 16, 2008
Published: July 21, 2008

Virtual Issues
Vol. 3, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Nicolas Bonod, Evgeny Popov, and Ross C. McPhedran, "Increased surface plasmon resonance sensitivity with the use of double Fourier harmonic gratings," Opt. Express 16, 11691-11702 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-16-16-11691


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