title: Variable wavefront tuning with a SLM for tailored femtosecond fiber Bragg grating inscription.
abstract: We report on the inscription of fiber Bragg gratings using femtosecond laser pulses and the phase-mask technique. The wavefront of the inscription laser is variably tuned with a spatial light modulator (SLM). By applying Fresnel lenses with different focal lengths, the period of the fiber Bragg gratings could be shifted. A linear change of the grating period for a FBG inscribed with a third-order deformed wavefront and a quadratic-period behavior for a fourth-order wavefront could be verified experimentally for the first time.
authors.forename: Christian
authors.initials: C
authors.lastname: Voigtländer
authors.forename: Ria G
authors.initials: RG
authors.lastname: Krämer
authors.forename: Thorsten A
authors.initials: TA
authors.lastname: Goebel
authors.forename: Daniel
authors.initials: D
authors.lastname: Richter
authors.forename: Stefan
authors.initials: S
authors.lastname: Nolte