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Proceedings Paper

Silicon Oxynitride Coatings To Reduce Mechanical Fatigue And Hydrogen Induced Optical Ageing In Silica Fibres
Author(s): W. J. Duncan; K. J. Beales; D. M. Cooper; P. L. Dunn; M. Herman; J. D. Rush; G. R. Thomas
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Paper Abstract

Monomode silica fibre has been coated during fibre pulling with silicon oxynitride ceramics using an on-line deposition process. The coatings have been tested for their ability to prevent the mechanical and optical ageing of fibre. The ceramic coated fibres are more fatigue resistant than silica having N values of over 100 compared with an N of 25 for silica. rrus ceramic coated fibre need only be proof tested at about half the level required for silica. While silica fibre saturates with hydrogen in 500 hours no hydrogen has been detected in a ceramic coated fibre stored in hydrogen for 1900 hours. This and other experiments at high temperature suggest that silicon oxynitride coatings can prevent the hydrogen content of fibre from reaching unacceptable levels.

Paper Details

Date Published: 15 October 1984
PDF: 5 pages
Proc. SPIE 0506, Fiber Optics in Adverse Environments II, (15 October 1984); doi: 10.1117/12.944916
Show Author Affiliations
W. J. Duncan, British Telecom Research Laboratories (U.K.)
K. J. Beales, British Telecom Research Laboratories (U.K.)
D. M. Cooper, British Telecom Research Laboratories (U.K.)
P. L. Dunn, British Telecom Research Laboratories (U.K.)
M. Herman, British Telecom Research Laboratories (U.K.)
J. D. Rush, British Telecom Research Laboratories (United Kingdom)
G. R. Thomas, British Telecom Research Laboratories (U.K.)


Published in SPIE Proceedings Vol. 0506:
Fiber Optics in Adverse Environments II
Roger A. Greenwell, Editor(s)

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