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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 14, Iss. 17 — Sep. 1, 1989
  • pp: 967–969

Fiber-optic sensor for humidity

Fedor Mitschke  »View Author Affiliations


Optics Letters, Vol. 14, Issue 17, pp. 967-969 (1989)
http://dx.doi.org/10.1364/OL.14.000967


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Abstract

A novel fiber-optic humidity sensor is described. It is based on reversible sorption of water from the ambient atmosphere in a porous thin-film interferometer that sits on the tip of a fiber. The sorbed water changes the refractive index of the thin films and thus the reflectivity of the interferometer; the resulting modulation of the reflected intensity is detected. The sensor is insensitive to electromagnetic interference and aggressive chemicals and is extremely small (micrometers).

© 1989 Optical Society of America

History
Original Manuscript: March 24, 1989
Manuscript Accepted: May 23, 1989
Published: September 1, 1989

Citation
Fedor Mitschke, "Fiber-optic sensor for humidity," Opt. Lett. 14, 967-969 (1989)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-14-17-967

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