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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 19 — Jul. 1, 2012
  • pp: 4536–4541

Miniature all-fiber Fabry–Perot sensor for simultaneous measurement of pressure and temperature

Simon Pevec and Denis Donlagic  »View Author Affiliations


Applied Optics, Vol. 51, Issue 19, pp. 4536-4541 (2012)
http://dx.doi.org/10.1364/AO.51.004536


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Abstract

This article presents a miniature, high-sensitivity, all-silica Fabry–Perot fiber-optic sensor suitable for simultaneous measurements of pressure and temperature. The proposed sensor diameter does not exceed 125 μm and consists of two low-finesse Fabry–Perot resonators created at the tip of an optical fiber. The first resonator is embodied in the form of a short air cavity positioned at the tip of the fiber. This resonator utilizes a thin silica diaphragm to achieve the sensor’s pressure response. The second resonator exploits the refractive index dependence of silica fiber in order to provide the proposed sensor’s temperature measurement function. Both resonators have substantially different lengths that permit straightforward spectrally resolved signal processing and unambiguous determination of the applied pressure and temperature.

© 2012 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: April 5, 2012
Manuscript Accepted: May 11, 2012
Published: June 29, 2012

Citation
Simon Pevec and Denis Donlagic, "Miniature all-fiber Fabry–Perot sensor for simultaneous measurement of pressure and temperature," Appl. Opt. 51, 4536-4541 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-19-4536

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