Apparatus and method for producing a glass preform for optical fibres by deposition

摘要

An apparatus (100) and method for manufacturing a glass base material (12), which is a preform of an optical fiber, the glass base material (12) having a core rod (10) as a central axis, comprises a holding unit (14) having a plurality of scroll chucks (75A,75B) connected in series along the core rod (10) for holding an end of the core rod (10); and a burner (18) that hydrolyzes a gas material, which is a base material of the glass base material (12), into glass particles and accumulates the glass particles around the core rod (10) to form the glass base material (12). Also disclosed is an apparatus for manufacturing said preform by deposition having an air vent (48), fitter (3) and air-regulating plate (28) for regulating the flow and direction of clearing gas from said air vent (48) in the deposition chamber.