Thermal properties of fibre Bragg gratings inscribed point-by-point by infrared femtosecond laser

Amós Martínez, Igor Khrushchev, Ian Bennion

Research output: Contribution to journalArticle

Abstract

Direct, point-by-point inscription of fibre Bragg gratings by an infrared femtosecond laser has been reported recently. Response of these gratings to annealing at temperatures in the range 500 to 1050°C is studied for the first time. Gratings inscribed by infrared femtosecond lasers were thermally stable at temperatures up to 900°C, representing a significant improvement in comparison with the 'common', UV-inscribed, gratings. Annealing at temperatures up to 700°C increased grating reflectivity. © IEE 2005.

Original languageEnglish
Pages (from-to)176-178
Number of pages3
JournalElectronics letters
Volume41
Issue number4
DOIs
Publication statusPublished - 17 Feb 2005

Bibliographical note

This paper is a postprint of a paper submitted to and accepted for publication in Electronics Letters and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library.

Keywords

  • thermal properties
  • fibre Bragg gratings
  • point by point method
  • infrared femtosecond laser
  • annealing
  • thermal stability
  • grating reflectivity
  • 500 to 1050 degC

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