Sol-gel process for the production of optical fiber preforms

Details Sol-gel process for the production of optical fiber preforms Sol-gel process for the production of optical fiber preforms

2006-04-11

2006-04-11

Vincent, Sean (Department: 1731)

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

Process of manufacturing optical fibers, waveguides, or...

C065S017200, C065S440000

Reexamination Certificate

active

07024890

ABSTRACT:
Sol-gel process for the production of optical fiber preforms or overcladdings by preparing a sol, gelling the sol, drying the wet gel to a dry porous gel and densifying the dry gel to fully dense glass, wherein during the calcination treatment from 350° C. to 900° C. to remove organic impurities in the dry gel, it is carried out at least one reduced-pressure phase at a pressure comprised between about 0.01 and 0.5 bar.

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