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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 17 — Aug. 18, 2008
  • pp: 12538–12543

Coupled optical microcavities: an enhanced refractometric sensing configuration

Yun-Feng Xiao, Venkat Gaddam, and Lan Yang  »View Author Affiliations


Optics Express, Vol. 16, Issue 17, pp. 12538-12543 (2008)
http://dx.doi.org/10.1364/OE.16.012538


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Abstract

We theoretically investigate the application of coupled optical microcavities as refractive index sensors. Coupled microcavities support a very sharp asymmetrical Fano resonance, which gives rise to faster changes in output transmission than the changes from a single cavity. With the output transmission at a fixed wavelength that varies much faster than it does in a single-cavity resonance, the result is enhanced sensitivity of the device to the changes in refractive index. In addition, it is observed that both thermal and optical Kerr effects can be utilized to improve the sensitivity.

© 2008 Optical Society of America

OCIS Codes
(230.3990) Optical devices : Micro-optical devices
(230.5750) Optical devices : Resonators
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Remote sensing and sensors

History
Original Manuscript: June 25, 2008
Revised Manuscript: July 29, 2008
Manuscript Accepted: July 29, 2008
Published: August 4, 2008

Citation
Yun-Feng Xiao, Venkat Gaddam, and Lan Yang, "Coupled optical microcavities: an enhanced refractometric sensing configuration," Opt. Express 16, 12538-12543 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-17-12538


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