Fabrication of precise aperiodic multichannel fibre Bragg grating filters for spectral line suppression in hydrogenated standard telecommunications fibre

Research output: Contribution to journalArticle


We demonstrate the design and fabrication of multichannel fibre Bragg gratings (FBGs) with aperiodic channel spacings. These will be suitable for the suppression of specific spectral lines such as OH emission lines in the near infrared (NIR) which degrade ground based astronomical imaging. We discuss the design process used to meet a given specification and the fabrication challenges that can give rise to errors in the final manufactured device. We propose and demonstrate solutions to meet these challenges.
Original languageEnglish
Pages (from-to)1315-1323
Number of pages9
JournalOptics Express
Issue number2
Early online date12 Jan 2018
Publication statusPublished - 12 Jan 2018


Bibliographical note

© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement


  • Fiber Bragg gratings
  • photosensitivity
  • Astronomy and astrophysics

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