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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 17 — Aug. 16, 2010
  • pp: 18164–18170

Photonic crystal biosensor based on angular spectrum analysis

Elewout Hallynck and Peter Bienstman  »View Author Affiliations


Optics Express, Vol. 18, Issue 17, pp. 18164-18170 (2010)
http://dx.doi.org/10.1364/OE.18.018164


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Abstract

The need for cost effective and reliable biosensors in e.g. medical applications is an ever growing and everlasting one. Not only do we strive to increase sensitivity and detection limit of such sensors; ease of fabrication or implementation are equally important. In this work, we propose a novel, photonic crystal based biosensor that is able to operate at a single frequency, contrary to resonance based sensors. In a certain frequency range, guided photonic crystal modes can couple to free space modes resulting in a Lorentzian shape in the angular spectrum. This Lorentzian can shift due to refractive index changes and simulations have shown sensitivities of 65° per refractive index unit and more.

© 2010 Optical Society of America

OCIS Codes
(070.4790) Fourier optics and signal processing : Spectrum analysis
(130.6010) Integrated optics : Sensors
(280.1415) Remote sensing and sensors : Biological sensing and sensors
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:
Sensors

History
Original Manuscript: May 20, 2010
Revised Manuscript: July 12, 2010
Manuscript Accepted: July 18, 2010
Published: August 9, 2010

Virtual Issues
Vol. 5, Iss. 13 Virtual Journal for Biomedical Optics

Citation
Elewout Hallynck and Peter Bienstman, "Photonic crystal biosensor based on angular spectrum analysis," Opt. Express 18, 18164-18170 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-17-18164


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