Fibre Bragg Gratings, towards a Better Thermal Stability at High Temperatures
- de Oliveira, Valmir
- Abe, Ilda
- Alberto, Nelia Jordão
- Kalinowski, Hypolito José
Publication date
December 2015
DOI Publisher
The Authors. Published by Elsevier B.V.Abstract
AbstractRegenerated fibre Bragg gratings (RFBG) are obtained by heating an original seed grating until its reflection practically vanishes, which is followed by the growth of a new reflection band. Advantages of RFBG for sensing purposes are the longer lifetime and higher thermal stability at higher temperatures, as they have been observed to survive temperatures in the range 1300-1500°C. The thermal stability of the RFBG permits several applications not attained by standard Bragg gratings
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