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

Kyriacos Kalli*, A. George Simpson, Kaimin Zhou, Lin Zhang, Ian Bennion

*Corresponding author for this work

Research output: Contribution to journalConference article

Abstract

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.

Original languageEnglish
Article number61891T
JournalProceedings of SPIE - International Society for Optical Engineering
Volume6189
DOIs
Publication statusPublished - 9 Aug 2006
EventOptical Sensing II - Strasbourg, United Kingdom
Duration: 3 Apr 20066 Apr 2006

Bibliographical note

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.

Keywords

  • Fibre Bragg gratings
  • Optical fibre sensors
  • Photosensitivity
  • Temperature and strain sensors
  • Type IA grating

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