BURNER FOR PRODUCING OPTICAL FIBER PREFORM AND PRODUCTION OF OPTICAL FIBER PREFORM USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a burner which is easily positioned with high precision to a deposition reference point of a starting target material. SOLUTION: The burner 1 for producing an optical fiber preform by depositing glass fine particles generated by a flame reaction on the starting target material is constituted of a plurality of gas conduits 3 having gas introducing side opening ends and gas jetting side opening ends. The burner is freely attachable/detachable to a gas introducing member at the gas introducing side opening end and at least one gas conduit has an optical axis which affords an unobstructed view from one end to another end.