FIELD: production of optical fibrous blanks. SUBSTANCE: plasma gas flows through gas duct and enters plasmatron burner to which carrier gas is fed through other gas duct, thus forming reaction products which settle on graphite target forming tubular body which may be used for production of optical fibers. Plasma source may be mounted along target at clearance of 30-55 mm between target and coil. EFFECT: possibility of production of optical fibers at hydroxylic content lesser than 1 ppm. 8 cl, 4 dwg
