title: Arrays of regenerated fiber bragg gratings in non-hydrogen-loaded photosensitive fibers for high-temperature sensor networks.
abstract: We report about the possibility of using regenerated fiber Bragg gratings generated in photosensitive fibers without applying hydrogen loading for high temperature sensor networks. We use a thermally induced regenerative process which leads to a secondary increase in grating reflectivity. This refractive index modification has shown to become more stable after the regeneration up to temperatures of 600 °C. With the use of an interferometric writing technique, it is possible also to generate arrays of regenerated fiber Bragg gratings for sensor networks.
authors.affiliation: Institute of Photonic Technology (IPHT), Albert-Einstein-Str. 9, 07745 Jena, Germany; E-Mails:  sven.brueckner@ipht-jena.de  (S.B.);  martin.becker@ipht-jena.de  (M.B.);  manfred.rothhardt@ipht-jena.de  (M.R.);  hartmut.bartelt@ipht-jena.de  (H.B.).
authors.forename: Eric
authors.initials: E
authors.lastname: Lindner
authors.forename: Christoph
authors.initials: C
authors.lastname: Chojetztki
authors.forename: Sven
authors.initials: S
authors.lastname: Brueckner
authors.forename: Martin
authors.initials: M
authors.lastname: Becker
authors.forename: Manfred
authors.initials: M
authors.lastname: Rothhardt
authors.forename: Johan
authors.initials: J
authors.lastname: Vlekken
authors.forename: Hartmut
authors.initials: H
authors.lastname: Bartelt