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 37/012 (2006.01) C03B 37/014 (2006.01) G02B 6/00 (2006.01)

Patent

CA 1264614

- 1 - Abstract: A method for producing a glass preform for an optical fiber by means at least two burners, comprises jetting a glass raw material containing SiCl4 from a first center burner and a hydrogen-containing silicon compound with larger reaction heat than SiCl4 from at least one second burner. The method involves flame hydrolyzing the glass raw material to synthesizing fine glass particles, depositing the fine glass particles on a starting member to form a porous soot preform and heating and sintering the soot preform to obtain a transparent glass preform. The method produces a large stable preform,and the bulk density of the preform is easily controlled.

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