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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 21 — Nov. 1, 2008
  • pp: 2455–2457

Miniature fiber-optic high temperature sensor based on a hybrid structured Fabry–Perot interferometer

Hae Young Choi, Kwan Seob Park, Seong Jun Park, Un-Chul Paek, Byeong Ha Lee, and Eun Seo Choi  »View Author Affiliations


Optics Letters, Vol. 33, Issue 21, pp. 2455-2457 (2008)
http://dx.doi.org/10.1364/OL.33.002455


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Abstract

A miniature Fabry–Perot (FP) interferometric fiber-optic sensor suitable for high-temperature sensing is proposed and demonstrated. The sensor head consists of two FP cavities formed by fusion splicing a short hollow-core fiber and a piece of single-mode fiber at a photonic crystal fiber in series. The reflection spectra of an implemented sensor are measured at several temperatures and analyzed in the spatial frequency domain. The experiment shows that the thermal-optic effect of the cavity material is much more appreciable than its thermal expansion. The temperature measurements up to 1000 ° C with a step of 50 ° C confirm that it could be applicable as a high-temperature sensor.

© 2008 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(230.1150) Optical devices : All-optical devices

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 22, 2008
Revised Manuscript: September 7, 2008
Manuscript Accepted: September 9, 2008
Published: October 21, 2008

Citation
Hae Young Choi, Kwan Seob Park, Seong Jun Park, Un-Chul Paek, Byeong Ha Lee, and Eun Seo Choi, "Miniature fiber-optic high temperature sensor based on a hybrid structured Fabry–Perot interferometer," Opt. Lett. 33, 2455-2457 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-21-2455


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