Method and apparatus reducing metal impurities in optical...

Drying and gas or vapor contact with solids – Process – Contacting gas or vapor with solid sorbent to store gas or...

Reexamination Certificate

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C034S080000, C034S082000, C065S422000

Reexamination Certificate

active

06935050

ABSTRACT:
A method and apparatus for producing an optical fiber preform including a metal remover, which operates by adsorption, that removes gaseous transition metal impurities present in a process gas to be provided to a furnace for drying, doping or consolidation. The apparatus and method may reduce attenuation of the resultant optical fiber drawn from the preform.

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