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Proceedings Paper

Behaviors of spectral transmissions of photorefractive filters written in germania-doped fibers: writing and erasing experiments
Author(s): Marc Douay; Wenxiang Xie; Eric Fertein; Pascal Bernage; Pierre Niay; Jean-Francois Bayon; Thierry Georges
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Paper Abstract

Photoinscriptions of Bragg gratings have been carried out within several germanosilicate fibers via UV side writing near 243 nm. Real-time measurements of the spectral transmission, of the FWHM bandwidth and of the resonance wavelengths of the Bragg gratings lead to noteworthy observations when long irradiation times are used. Thus, second order diffraction efficiency has been observed from Bragg gratings written within some fibers. Second order diffraction can be detected once the first order grating reflectivity has begun to saturate. Whereas the dynamics of the UV induced excess losses may vary from one sample to another, no obvious direct correlation can be established between the dynamical evolutions of the loss spectra and the features of the grating growth.

Paper Details

Date Published: 22 December 1993
PDF: 25 pages
Proc. SPIE 2044, Photosensitivity and Self-Organization in Optical Fibers and Waveguides, (22 December 1993); doi: 10.1117/12.165647
Show Author Affiliations
Marc Douay, Univ. des Sciences et Technologies de Lille (France)
Wenxiang Xie, Univ. des Sciences et Technologies de Lille (France)
Eric Fertein, Univ. des Sciences et Technologies de Lille (France)
Pascal Bernage, Univ. des Sciences et Technologies de Lille (France)
Pierre Niay, Univ. des Sciences et Technologies de Lille (France)
Jean-Francois Bayon, CNET (France)
Thierry Georges, CNET (France)


Published in SPIE Proceedings Vol. 2044:
Photosensitivity and Self-Organization in Optical Fibers and Waveguides

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