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Optics Letters

Optics Letters


  • Vol. 37, Iss. 13 — Jul. 1, 2012
  • pp: 2718–2720

Grating-coupled surface plasmon resonance in conical mounting with polarization modulation

G. Ruffato and F. Romanato  »View Author Affiliations

Optics Letters, Vol. 37, Issue 13, pp. 2718-2720 (2012)

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A grating-coupled surface plasmon resonance (GCSPR) technique based on polarization modulation in conical mounting is presented. A metallic grating is azimuthally rotated to support double-surface plasmon polariton excitation and exploit the consequent sensitivity enhancement. Corresponding to the resonance polar angle, a polarization scan of incident light is performed, and reflectivity data are collected before and after functionalization with a dodecanethiol self-assembled monolayer. The output signal exhibits a harmonic dependence on polarization, and the phase term is used as a parameter for sensing. This technique offers the possibility of designing extremely compact, fast, and cheap high-resolution plasmonic sensors based on GCSPR.

© 2012 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(240.6680) Optics at surfaces : Surface plasmons
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Optics at Surfaces

Original Manuscript: January 11, 2012
Revised Manuscript: April 24, 2012
Manuscript Accepted: May 5, 2012
Published: June 27, 2012

G. Ruffato and F. Romanato, "Grating-coupled surface plasmon resonance in conical mounting with polarization modulation," Opt. Lett. 37, 2718-2720 (2012)

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Fig. 1. Fig. 2. Fig. 3.

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