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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 10 — Oct. 5, 2012

Reflectance-based two-dimensional TiO2 photonic crystal liquid sensors

Yujian Huang, Grégory Pandraud, and Pasqualina M. Sarro  »View Author Affiliations


Optics Letters, Vol. 37, Issue 15, pp. 3162-3164 (2012)
http://dx.doi.org/10.1364/OL.37.003162


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Abstract

We propose and experimentally demonstrate a reflectance-based photonic crystal (PC) liquid sensor. The PC is made of two-dimensional TiO2 nanopillar arrays. Such a reflectance-based structure with large functional area not only simplifies the optical guiding but also enhances the sensor signal. A linear shift of reflectance peaks is found for liquids with refractive indices varying from 1.333 to 1.390 at wavelength near 1.5 μm. Excellent agreement between measured values and the generated reflectance model at a fixed wavelength is obtained, indicating the high potential of these PC-based liquid sensors for biological and environmental applications.

© 2012 Optical Society of America

OCIS Codes
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:
Diffraction and Gratings

History
Original Manuscript: May 31, 2012
Revised Manuscript: June 28, 2012
Manuscript Accepted: June 28, 2012
Published: July 25, 2012

Virtual Issues
Vol. 7, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Yujian Huang, Grégory Pandraud, and Pasqualina M. Sarro, "Reflectance-based two-dimensional TiO2 photonic crystal liquid sensors," Opt. Lett. 37, 3162-3164 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-37-15-3162


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References

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