Method of manufacturing silicon optical fiber having a compressi

Details Method of manufacturing silicon optical fiber having a compressi Method of manufacturing silicon optical fiber having a compressi

1988-01-22

1992-04-07

Simmons, David A.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 182, 65 183, 65 301, 65900, 427163, 427167, G02B 500, C03B 1900

Patent

active

051024381

ABSTRACT:
In order to eliminate the effect of water attack on silica optical fibres, the fibres are provided with a surface layer of silicon nitride or silicon oxynitride. The method proposed includes direct nitridation. This may be achieved by adding a nitriding atmosphere to the drawing furnace gases, or to the reactive gases (TiCl.sub.4 and SiCl.sub.4) incorporated in the flame of an oxyhydrogen torch for the formation of a compressive silica/titania layer on an optical fibre by a glass soot deposition and sintering process.

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