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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 7 — Apr. 1, 2009
  • pp: 1039–1041

Interrogation of whispering-gallery modes resonances in cylindrical microcavities by backreflection detection

Vanessa Zamora, Antonio Díez, Miguel V. Andrés, and Benito Gimeno  »View Author Affiliations

Optics Letters, Vol. 34, Issue 7, pp. 1039-1041 (2009)

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The excitation of whispering-gallery-mode resonances of cylindrical microcavities, using narrow fiber tapers, produces simultaneously the excitation of spiral modes. The power coupled to the spiral modes leads to a significant broadening of the dips observed in the spectrum of light transmitted through the taper. We demonstrate that whispering-gallery modes resonances of cylindrical microcavities can also be interrogated by measuring the reflection spectrum. Unlike the dips observed in transmission, the peaks in the reflection spectrum are symmetric and narrower than the corresponding transmission dips.

© 2009 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(230.5750) Optical devices : Resonators
(240.6690) Optics at surfaces : Surface waves

ToC Category:
Optical Devices

Original Manuscript: January 5, 2009
Revised Manuscript: February 24, 2009
Manuscript Accepted: February 27, 2009
Published: March 25, 2009

Virtual Issues
Vol. 4, Iss. 6 Virtual Journal for Biomedical Optics

Vanessa Zamora, Antonio Díez, Miguel V. Andrés, and Benito Gimeno, "Interrogation of whispering-gallery modes resonances in cylindrical microcavities by backreflection detection," Opt. Lett. 34, 1039-1041 (2009)

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