Shaping Fibre Preforms From Prefabricated Powders

Abstract

A process has been developed for the mechanical shaping of silica fibre preforms. Porous preforms are shaped from prefabricated powders and transfered to glass rods by thermal treatment. Drawn fibers now have attenuations of 1 dB /km and an OH absorption of 0.5 dB /km at 1380 nm. Both single and multimode fibres have been produced.