Method of manufacturing an optical fiber base material (Fiber 光 母 材)

摘要

A vertical axis (2), as a seeding axis, is rotated and raised by a controller (3). Glass material, gas and fuel are supplied through a mixing torch (4) from supplying equipment (6). The porous glass preform (11) is heated at 1500-1700C by a ringshaped heater (13) to prepare the transparent glass preform (14). Halogen gas (15) for dehydration is supplied through a pipe (16). The mixing torch has an angle of 10-60 with the vertical axis. Waste gas is exhausted through an exhaust port (9).