Citation
F. Kherbouche et al., Chemical migration during UV writing of Bragg gratings in germanium doped silica optical fibres, J PHYS D, 33(24), 2000, pp. 3233-3238
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS D-APPLIED PHYSICS
ISSN journal
00223727
→ ACNP
Volume
33
Issue
24
Year of publication
2000
Pages
3233 - 3238
Database
ISI
SICI code
0022-3727(200012)33:24<3233:CMDUWO>2.0.ZU;2-G
Abstract
Chemical migrations during UV writing of Bragg gratings on germanium doped
silica optical fibre preform are seen when the fluence is large enough. The
UV irradiated fringes are depleted in germanium but rich in oxygen, wherea
s the non-irradiated fringes are reduced and enriched in silicon. These che
mical modifications lead to an additional refractive index modulation which
is out of phase with the densification grating.