The impact of hydrogenation conditions on the temperature and strain discrimination of Type i and Type IA Bragg grating sensors


We report experimental findings for tailoring the temperature and strain coefficients of Type I and Type IA 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 I and Type IA thermal coefficients and a significant improvement in the matrix condition number, which impacts the ability to recover accurate temperature and strain data using the Type1-1A dual grating sensor.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: Copyright 2006 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Uncontrolled Keywords: Fibre Bragg gratings,Optical fibre sensors,Photosensitivity,Temperature and strain sensors,Type IA grating,Electrical and Electronic Engineering,Condensed Matter Physics
Publication ISSN: 1996-756X
Last Modified: 27 Jun 2024 09:50
Date Deposited: 21 Feb 2019 15:14
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.spi ... /12.662311.full (Publisher URL)
PURE Output Type: Conference article
Published Date: 2006-08-09
Authors: Kalli, Kyriacos
Simpson, A. George
Zhou, Kaimin (ORCID Profile 0000-0002-6011-1912)
Zhang, Lin (ORCID Profile 0000-0002-1691-5577)
Bennion, Ian



Version: Published Version

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