Dispersion-modified actively mode-locked erbium fibre laser using a chirped fibre grating

P.N. Kean, John W.D. Gray, Ian Bennion, Nick Doran

Research output: Contribution to journalArticlepeer-review


The authors describe the operation of an actively modelocked Er fibre laser incorporating a chrped in fibre Bragg reflection grating as one end mirror to the cavity, acting as a lumped highly dispersive element. In one oreientation the grating shifted the cavity into normal dispersion regime and pulses of -25ps duration were produced. In the opposite oreintation, the cavity dispersion was anomalous and ~8ps pulses were produced with characterisitics typical of solitons propagating in a periodically perturbed system.
Original languageEnglish
Pages (from-to)2133-2135
Number of pages3
JournalElectronics letters
Issue number25
Publication statusPublished - 8 Dec 1994


  • actively modelocked Er fibre laser
  • chirped in-fibre Bragg reflection grating
  • end mirror
  • highly dispersive element
  • normal dispersion regime
  • cavity dispersion
  • solitons
  • periodically perturbed system
  • dispersion-modified lasers
  • Er3+-doped fibre
  • 25 ps
  • 8 ps


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