EFFECTIVE-INDEX DRIFT FROM MOLECULAR-HYDROGEN DIFFUSION IN HYDROGEN-LOADED OPTICAL FIBERS AND ITS EFFECT ON BRAGG GRATING FABRICATION

Authors
MALO B ALBERT J HILL KO BILODEAU F JOHNSON DC
Citation
B. Malo et al., EFFECTIVE-INDEX DRIFT FROM MOLECULAR-HYDROGEN DIFFUSION IN HYDROGEN-LOADED OPTICAL FIBERS AND ITS EFFECT ON BRAGG GRATING FABRICATION, Electronics Letters, 30(5), 1994, pp. 442-443
Citations number
12
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
Electronics Letters → ACNP
ISSN journal
00135194
Volume
30
Issue
5
Year of publication
1994
Pages
442 - 443
Database
ISI
SICI code
0013-5194(1994)30:5<442:EDFMDI>2.0.ZU;2-M
Abstract
When hydrogen loading is used to enhance the photosensitivity of silic a-based optical waveguides and fibres, the presence of molecular hydro gen dissolved in the glass matrix changes the effective index of propa gation of guided optical modes by as much as 0.05%. Real-time monitori ng of the reflectivity of Bragg gratings written in such conditions sh ows that the centre wavelength follows the changes in hydrogen concent ration due to diffusion and reaction with glass defects.