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Optical Engineering

Intrinsic optical fiber temperature sensor operating by modulation of the local numerical aperture
Author(s): Moustafa Remouche; Rabah Mokdad; Moktar Lahrashe; Ayoub Chakari; Patrick P. Meyrueis
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Paper Abstract

Curvature of a multimode optical fiber reduces the numerical aperture and induces radiation losses. We study this phenomenon and we present the "model disadaptation" method to calculate the local numerical aperture and the power attenuation. We exploit the bending effect on the local numerical aperture to propose a new intrinsic optical fiber temperature sensor. The modeling results are experimentally validated for two kinds of optical fibers: a silica-silicone optical fiber and a silica-polymer optical fiber. The simulation and the experimental results are in good accordance and show that the silica-silicone optical fiber sensor can operate between −60 and 152°C with a good response. The silica-polymer optical fiber temperature sensor can sense the temperatures between −249 and 83°C with a good response.

Paper Details

Date Published: 1 February 2007
PDF: 15 pages
Opt. Eng. 46(2) 024401 doi: 10.1117/1.2709854
Published in: Optical Engineering Volume 46, Issue 2
Show Author Affiliations
Moustafa Remouche, Univ. Louis Pasteur (France)
Rabah Mokdad, Univ. Louis Pasteur (France)
Moktar Lahrashe, Univ. Louis Pasteur (France)
Ayoub Chakari, Univ. Louis Pasteur (France)
Patrick P. Meyrueis, Univ. Louis Pasteur (France)

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