Method for manufacturing preform and preform

Details Method for manufacturing preform and preform Method for manufacturing preform and preform

C - Chemistry, Metallurgy

03

B

C03B 37/012 (2006.01) C03C 13/00 (2006.01)

Patent

CA 2549559

A method for manufacturing a preform, which is a base material of an optical fiber, comprising: forming porous-glass-base-material by accumulating glass particles; dehydrating the porous-glass-base-material by heating the porous-glass-base-material in an atmosphere of gas that contains chlorine; heating the porous-glass-base-material dehydrated by the dehydrating with a first heating temperature in an atmosphere of a first inert gas; and vitrifying the porous-glass-base-material by heating the porous-glass-base-material with a second heating temperature in an atmosphere of second inert gas.

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