Simple fiber-optic low-temperature sensor that uses microbending loss

A simple fiber-optic temperature sensor is constructed that uses the temperature dependence of microbending loss. The sensor is tested and shows high sensitivity and a strict linear scale over a wide range from 20 to 180 K. It is shown that a proper choice of signal wavelength can be used either to...

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Bibliographic Details
Published in:Optics letters 1991-09, Vol.16 (17), p.1355-1357
Main Authors: Lumholt, O, Bjarklev, A, Dahl-Petersen, S, Larsen, C C, Povlsen, J H, Rasmussen, T, Rottwitt, K
Format: Article
Language:English
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Summary:A simple fiber-optic temperature sensor is constructed that uses the temperature dependence of microbending loss. The sensor is tested and shows high sensitivity and a strict linear scale over a wide range from 20 to 180 K. It is shown that a proper choice of signal wavelength can be used either to make the sensor more sensitive or to make it independent of changes in laser wavelength.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.16.001355