FIELD: physics.
SUBSTANCE: optical fibre workpiece is made by depositing mass of porous quartz glass onto the periphery of a glass rod. The mass of the porous quartz glass is vitrified via thermal treatment of the glass workpiece. The workpiece has a part which is suitable for stretching until optical fibre is obtained, and defective part on both ends of the suitable part. During vitrification, part of the mass of the porous quartz glass in the defective part shifts along the axial direction of the glass rod. When the mass of the porous quartz glass shifts, tension between the glass rod and the mass of the porous quartz glass relaxes.
EFFECT: making a large-size workpiece and possibility of vitrifying mass of porous quartz glass while simultaneously preventing cracking, delamination and dislocation.
15 cl, 12 dwg
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