METHOD AND DEVICE FOR MANUFACTURE

摘要

A method of and apparatus for fabricating silica optical fibres doped with metal oxides, derived from the synthesis of low-pressure reactants. In a system for fabricating preforms according to MCVD technique a slit tube (TD) containing a wool (MA) of the metal whose oxide is desired is added inside the supporting tube (TQ) and through the wool a mixture containing halogens or halogen-compounds is injected to yield the dopant precursor reactant.