0980849-A1 is referenced by 3 patents and cites 8 patents.

Process for purifying natural or synthetic silica comprises using a plasma or a flame (4), a supply of calorific energy (3) and a supply unit (9) of natural or synthetic silica grains (11), also supplying a fluorinated or chlorinated compound mixed with a carrier gas (15). Supply conditions are adjusted to react alkaline elements or alkaline earth elements contained in the silica with fluorine or chlorine of the fluorinated or chlorinated compound. An Independent claim is also included for coating an optical fiber preform with natural or synthetic silica using a supply unit as above supplying both silica grains and fluorinated or chlorinated compound to the plasma or the flame.

Title
Process for purifying silica and use for depositing the purified silica on an optical fibre preform
Application Number
EP19980402124 19980827
Publication Number
0980849 (A1)
Application Date
August 27, 1998
Publication Date
February 23, 2000
Inventor
Campion Jean Florent
FR
Ripoche Pierre
FR
Lumineau Yves
FR
Gouez Benoit
FR
Drouart Alain
FR
Assignee
Cit Alcatel
FR
IPC
C03C 01/02
C03B 37/012
G02B 06/00
C03C 01/00
C03B 37/018
C03B 37/012
C03B 20/00
G02B 06/00
C03C 01/02
C03B 37/018
C03B 37/012
C03B 20/00
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