ROD-SHAPED PREFORM FOR MANUFACTURING AN OPTICAL FIBER THEREFROM, A METHOD FOR MANUFACTURING SUCH A ROD-SHAPED PREFORM AS WELL AS A METHOD FOR MANUFACTURING AN OPTICAL FIBER, USING SUCH A ROD-SHAPED PREFORM

摘要

The present invention relates to a rod-shaped preform for manufacturing an optical fiber therefrom, as well as to a method for manufacturing such a rod-shaped preform. The present invention furthermore relates to a method for manufacturing an optical fiber, wherein one end of a rod-shaped preform is subjected to a heat treatment, after which the thus softened end of the rod-shaped preform is subjected to a pulling force for the purpose of drawing an optical fiber therefrom.