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

被引：55
|
作者：
MALO, B
ALBERT, J
HILL, KO
BILODEAU, F
JOHNSON, DC
机构：
[1] Communications Research Centre, Ottawa (ONT) K2H 8S2, PO Box 11490, Station H.
来源：
ELECTRONICS LETTERS | 1994年 / 30卷 / 05期
关键词：
OPTICAL FIBERS; GRATINGS IN FIBERS;
D O I：
10.1049/el:19940274
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
When hydrogen loading is used to enhance the photosensitivity of silica-based optical waveguides and fibres, the presence of molecular hydrogen dissolved in the glass matrix changes the effective index of propagation of guided optical modes by as much as 0.05%. Real-time monitoring of the reflectivity of Bragg gratings written in such conditions shows that the centre wavelength follows the changes in hydrogen concentration due to diffusion and reaction with glass defects.
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页码：442 / 443
页数：2
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