Open AccessThermal regeneration of fiber Bragg gratings in photosensitive fibers
Author(s) -
Eric Lindner,
Christoph Chojetzki,
Sven Brückner,
Martin Becker,
Manfred Rothhardt,
Hartmut Bartelt
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.012523
Subject(s) - materials science , fiber bragg grating , optics , phosfos , optical fiber , grating , fiber laser , fiber , nanosecond , optoelectronics , long period fiber grating , laser , fiber optic sensor , plastic optical fiber , composite material , wavelength , physics
We report about a thermal regeneration of fiber Bragg gratings written in photosensitive fibers with nanosecond laser pulses. We observe a regenerative process in a highly photosensitive fiber without hydrogen loading which indicates a secondary grating growth in an optical fiber by thermal activation. This process is more temperature stable than the commonly known gratings produced by color center modifications. The writing conditions of such new type of gratings are investigated and the temperature behavior of these regenerated fiber Bragg gratings is analyzed. The application possibilities are in the field of high temperature sensor systems by making use of the combination of good spectral shape of a Type I grating with a Type II like temperature stability.