title: Continuously chirped fiber Bragg gratings by femtosecond laser structuring.
abstract: We report on what we believe to be the first successful inscription of continuously chirped fiber Bragg gratings (CCFBG) into a nonphotosensitive single-mode fiber (SMF) with near-IR femtosecond laser pulses. The continuous chirp was achieved by inscribing into a bent fiber using a phase mask scanning technique. We fabricated a 20 mm long CCFBG with a bandwidth of 6 nm and a maximal reflectivity of 50%. The second-order dispersion of the CCFBG of up to 28 ps(2) was measured with spectral interferometry.
authors.affiliation: Institute of Applied Physics, Friedrich-Schiller-University, Jena, Germany. thomas@iap.uni-jena.de
authors.forename: Jens
authors.initials: J
authors.lastname: Thomas
authors.forename: Christian
authors.initials: C
authors.lastname: Voigtländer
authors.forename: Damian
authors.initials: D
authors.lastname: Schimpf
authors.forename: Fabian
authors.initials: F
authors.lastname: Stutzki
authors.forename: Elodie
authors.initials: E
authors.lastname: Wikszak
authors.forename: Jens
authors.initials: J
authors.lastname: Limpert
authors.forename: Stefan
authors.initials: S
authors.lastname: Nolte
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann