pré-forma em forma de haste para fabricação de uma fibra óptica a partir da mesma, e, métodos para fabricação de uma pré-forma em forma de haste e para fabricação de uma fibra óptica.

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.