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Optics Letters

Optics Letters


  • Vol. 27, Iss. 7 — Apr. 1, 2002
  • pp: 512–514

Sensor based on an integrated optical microcavity

E. Krioukov, D.J. W. Klunder, A. Driessen, J. Greve, and C. Otto  »View Author Affiliations

Optics Letters, Vol. 27, Issue 7, pp. 512-514 (2002)

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A novel integrated optical sensor based on a cylindrical microcavity (MC) is proposed. A MC sustains so-called whispering-gallery modes (WGMs), in which the energy of the optical field can be efficiently stored. By monitoring the scattering intensity from the MC, one can detect minute changes in the refractive index of the WGM, for instance, as a result of analyte adsorption. Measurement of a change in refractive index of as little as 10-4 is demonstrated experimentally. The MC-based integrated optical sensor may have a size of approximately 8μm , and it is rugged and inexpensive.

© 2002 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(130.6010) Integrated optics : Sensors
(230.3120) Optical devices : Integrated optics devices

E. Krioukov, D.J. W. Klunder, A. Driessen, J. Greve, and C. Otto, "Sensor based on an integrated optical microcavity," Opt. Lett. 27, 512-514 (2002)

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