PROCESS FOR PRODUCING OPTICAL FIBER BASE AND APPARATUS THEREFOR

摘要

A method of manufacturing an optical fiber base material which reduces an occurrence of the situation described above that the transmission loss for a short wavelength range, particularly equal to or less than 1,310 nm, is larger, and an apparatus of the same. The method of manufacturing an optical fiber base material includes: forming a porous glass base material by depositing glass particles; providing a synthetic quartz glass vessel that is formed by melting a soot deposit, the soot deposit being formed by depositing glass particles which are produced by hydrolyzing silicide with oxyhydrogen flame; introducing dehydration reaction gas and inert gas into the vessel; heating the vessel that contains the dehydration reaction gas and the inert gas; and inserting the porous glass base material into the heated vessel to dehydrate and sinter the porous glass base material.