Direct writing of fibre Bragg gratings by femtosecond laser

Amós Martínez, Mykhaylo Dubov, Igor Khrushchev, Ian Bennion

Research output: Contribution to journalArticlepeer-review


A method for inscribing fiber bragg gratings (FBG) using direct, point-by-point writing by an infrared femtosecond laser was described. The method requires neither phase-masks nor photosensitized fibers and hence offers remarkable technology flexibility. It requires a very short inscription time of less than 60 s per grating. Gratings of first to third order were produced in non-photosensitized, standard telecommunication fiber (SMF) and dispersion shifted fiber (DSF). The gratings produced in this method showed low insertion loss, narrow linewidth and strong, fundamental or high-order resonance.

Original languageEnglish
Pages (from-to)1170-1172
Number of pages3
JournalElectronics letters
Issue number19
Publication statusPublished - 16 Sept 2004


  • dielectric materials
  • electromagnetic dispersion
  • infrared radiation
  • laser applications
  • laser pulses
  • optical communication
  • photosensitivity
  • polycrystalline materials
  • dispersion shifted fibers
  • infrared femtosecond lasers
  • standard telecommunication fibers
  • UV lasers


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