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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 18 — Aug. 27, 2012
  • pp: 19912–19920

Photonic crystal-based all-optical on-chip sensor

Y. Liu and H. W. M. Salemink  »View Author Affiliations

Optics Express, Vol. 20, Issue 18, pp. 19912-19920 (2012)

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In this paper we demonstrate a sensor based on a two-dimensional photonic crystal cavity structure. Design, theoretical simulations, fabrication and experiments are shown to illustrate the working principle of this device. Sensitivity of our sensor is determined by observing the shift of resonant wavelength of the photonic crystal cavity as a function of the refractive index variation of the analyte. By experimentally infiltrating solutions of water and ethanol through an elastomeric micro-fluidic channel, we have confirmed that our all-optical sensor achieves a sensitivity of 460 nm/RIU.

© 2012 OSA

OCIS Codes
(130.6010) Integrated optics : Sensors
(230.7400) Optical devices : Waveguides, slab
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:

Original Manuscript: May 1, 2012
Revised Manuscript: June 24, 2012
Manuscript Accepted: June 29, 2012
Published: August 15, 2012

Y. Liu and H. W. M. Salemink, "Photonic crystal-based all-optical on-chip sensor," Opt. Express 20, 19912-19920 (2012)

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