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Institute of Electrical and Electronics Engineers, IEEE Sensors Journal, 7(8), p. 1073-1078, 2008

DOI: 10.1109/jsen.2008.926169

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Passive temperature compensating technique for microstructured fiber Bragg gratings

Journal article published in 2008 by Minh ChÂu Phan Huy, Minh-Châu Phan Huy, Guillaume Laffont, VÉronique Dewynter, Pierre Ferdinand, Dominique Pagnoux, Bernard Dussardier ORCID, Wilfried Blanc
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This paper is available in a repository.

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Abstract

The thermal drift of the characteristic wavelength of fiber Bragg gratings (FBGs) photowritten in the core of microstructured fibers (MOFs) is significantly reduced by inserting a liquid of suitable refractive index into their holes. For instance, the spectral range of variations is divided by a factor of 4 over a temperature range larger than 20degC in a six-hole MOF, and the maximum sensitivity is reduced. Such passive FBG temperature compensation technique is of great interest for applications involving accurate sensing free of thermal effects.