title: Femtosecond point-by-point inscription of Bragg gratings by drawing a coated fiber through ferrule.
abstract: A ferrule-based method of direct fs FBG inscription through protective plastic coating is demonstrated. Fluctuations of fiber core position relative to the writing fs beam are compensated by the developed auto-alignment system. As a result, high-quality FBGs with length from 0.1 to 50 mm are fabricated in polyimide-coated fibers, whose spectra are well described by the theory. The fabricated FBGs have great potential in sensor applications at high temperature and harsh environments both point-action and distributed ones.
authors.forename: A V
authors.initials: AV
authors.lastname: Dostovalov
authors.forename: A A
authors.initials: AA
authors.lastname: Wolf
authors.forename: A V
authors.initials: AV
authors.lastname: Parygin
authors.forename: V E
authors.initials: VE
authors.lastname: Zyubin
authors.forename: S A
authors.initials: SA
authors.lastname: Babin