Impact of hydrogenation conditions on the temperature and strain coefficients of type 1 and typela dual grating sensors

Kyriacos Kalli*, George Simpson, Kaiming 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 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 Type 1-1A dual grating sensor.

Original languageEnglish
Article number219
Pages (from-to)892-895
Number of pages4
JournalProceedings of SPIE - International Society for Optical Engineering
Volume5855
Issue numberPART II
DOIs
Publication statusPublished - 23 May 2005
Event17th international conference on Optical Fibre Sensors - Bruges, Belgium
Duration: 23 May 200527 May 2005

Bibliographical note

Copyright 2005 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 1A grating

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