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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 24 — Nov. 23, 2009
  • pp: 21551–21559

Thermally stabilized PCF-based sensor for temperature measurements up to 1000°C

Gianluca Coviello, Vittoria Finazzi, Joel Villatoro, and Valerio Pruneri  »View Author Affiliations


Optics Express, Vol. 17, Issue 24, pp. 21551-21559 (2009)
http://dx.doi.org/10.1364/OE.17.021551


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Abstract

We report on the development of a stable Photonic Crystal Fiber (PCF) based two-mode interferometric sensor for ultra-high temperature measurements (up to 1000°C). The device consists of a stub of PCF spliced to standard optical fiber. In the splice regions, the voids of the PCF are fully collapsed, thus allowing the excitation and recombination of two core modes. The device spectrum exhibits sinusoidal interference pattern which shifts with temperature. We show that, despite being compact and robust, the proposed sensor head needs a quite long burn in (thermal annealing) to achieve an adequate and stable functionality level. The burn in process eliminates the residual stress in the fiber structure, which had been accumulated during the drawing phase, and changes the glass fictive temperature.

© 2009 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(160.0160) Materials : Materials
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(060.5295) Fiber optics and optical communications : Photonic crystal fibers
(280.6780) Remote sensing and sensors : Temperature

ToC Category:
Sensors

History
Original Manuscript: October 2, 2009
Revised Manuscript: October 30, 2009
Manuscript Accepted: October 30, 2009
Published: November 11, 2009

Citation
Gianluca Coviello, Vittoria Finazzi, Joel Villatoro, and Valerio Pruneri, "Thermally stabilized PCF-based sensor for temperature measurements up to 1000ºC," Opt. Express 17, 21551-21559 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-24-21551


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