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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 10 — May. 15, 2014
  • pp: 2947–2950

Combining label-free and fluorescence operation of Bloch surface wave optical sensors

Alberto Sinibaldi, Antonio Fieramosca, Riccardo Rizzo, Aleksei Anopchenko, Norbert Danz, Peter Munzert, Claudio Magistris, Claudia Barolo, and Francesco Michelotti  »View Author Affiliations

Optics Letters, Vol. 39, Issue 10, pp. 2947-2950 (2014)

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We report on the design, fabrication, and characterization of optical sensors based on Bloch surface waves propagating at the truncation edge of one-dimensional photonic crystals. The sensors can be simultaneously operated in both a label-free mode, where small refractive index changes at the surface are detected, and a fluorescence mode, where the fluorescence from a novel heptamethyne dye label in the proximity of the surface is collected. The two modes operate in the near-infrared spectral range with the same configuration of the optical reading apparatus. The limit of detection is shown to be smaller than that of equivalent surface plasmon sensors and the fluorescence collection efficiency is such that it can be efficiently analyzed by the same camera sensor used for label-free operation.

© 2014 Optical Society of America

OCIS Codes
(130.6010) Integrated optics : Sensors
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.6280) Medical optics and biotechnology : Spectroscopy, fluorescence and luminescence
(240.6690) Optics at surfaces : Surface waves
(160.5293) Materials : Photonic bandgap materials
(230.5298) Optical devices : Photonic crystals

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: February 10, 2014
Revised Manuscript: April 16, 2014
Manuscript Accepted: April 16, 2014
Published: May 12, 2014

Virtual Issues
Vol. 9, Iss. 7 Virtual Journal for Biomedical Optics

Alberto Sinibaldi, Antonio Fieramosca, Riccardo Rizzo, Aleksei Anopchenko, Norbert Danz, Peter Munzert, Claudio Magistris, Claudia Barolo, and Francesco Michelotti, "Combining label-free and fluorescence operation of Bloch surface wave optical sensors," Opt. Lett. 39, 2947-2950 (2014)

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