Method for producing glass preform for optical fiber

Details Method for producing glass preform for optical fiber Method for producing glass preform for optical fiber

C - Chemistry, Metallurgy

03

B

117/85

C03B 37/018 (2006.01) C03B 37/014 (2006.01)

Patent

CA 1338203

The present invention relates to a glass preform for use in fabrication of an optical fiber having no residual bubbles. The glass preform is produced by depositing glass soot on a periphery of a starting glass rod to form a porous glass preform, heating and sintering the preform in a helium atmosphere to consolidate the preform and then heating the sintered glass in an atmosphere containing an inert gas, except helium, having a partial pressure of the inert gas of not lower than 0.8 atm. A transparent glass preform is thereby obtained.

604213

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