title: Point-by-point inscription of apodized fiber Bragg gratings.
abstract: We demonstrate apodized fiber Bragg gratings (FBGs) inscribed with a point-by-point (PbP) technique. We tailor the grating phase and coupling amplitude through precise control over the longitudinal and transverse positions of each laser-inscribed modification. This method of apodization is facilitated by the highly localized, high-contrast modifications generated by focused IR femtosecond laser inscription. Our technique provides a simple method for the design and implementation of PbP FBGs with complex apodization profiles.
authors.affiliation: Centre for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS), MQ Photonics Research Centre, Department of Physics and Astronomy, Macquarie University, New South Wales 2109, Australia. robert.williams@mq.edu.au
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Williams
authors.forename: Christian
authors.initials: C
authors.lastname: Voigtländer
authors.forename: Graham D
authors.initials: GD
authors.lastname: Marshall
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann
authors.forename: Stefan
authors.initials: S
authors.lastname: Nolte
authors.forename: M J
authors.initials: MJ
authors.lastname: Steel
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Withford