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Proceedings Paper

Impact of hydrogenation conditions on the temperature and strain coefficients of type 1 and type 1a dual grating sensors
Author(s): K. Kalli; George Simpson; Kaiming Zhou; Lin Zhang; Ian Bennion
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Paper Abstract

We report experimental findings for tailoring the temperature and strain coefficients of Type 1 and Type 1A fibre Bragg gratings by influencing the photosensitivity presensitisation of the host optical fibre. It is shown that by controlling the level of hydrogen saturation, via hot and cold hydrogenation, it is possible to produce gratings with lower thermal coefficients. Furthermore, there is a larger difference between the Type 1 and Type 1A thermal coefficients and a significant improvement in the matrix condition number, which impacts the ability to recover accurate temperature and strain invariant data using the Type1-1A dual grating sensor.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.624287
Show Author Affiliations
K. Kalli, Higher Technical Institute (Cyprus)
George Simpson, Aston Univ. (United Kingdom)
Kaiming Zhou, Aston Univ. (United Kingdom)
Lin Zhang, Aston Univ. (United Kingdom)
Ian Bennion, Aston Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors

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