Method for the manufacture of a quartz glass preform for an...

Details Method for the manufacture of a quartz glass preform for an... Method for the manufacture of a quartz glass preform for an...

2005-09-06

2005-09-06

Griffin, Steven P. (Department: 1731)

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

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

C065S419000, C065S428000

Reexamination Certificate

active

06938443

ABSTRACT:
The invention relates to a method for manufacture of a quartz glass preform for an optical fibre consisting of the following steps: preparation of a hollow cylinder made of porous quartz glass which exhibits an inner layer with a doping substance which increases the refractive index of quartz glass and an outer layer surrounding the inner layer, with a lower refractive index, and collapse of the hollow cylinder characterised by collapse of the porous hollow cylinder onto a quartz glass rod containing the doping substance.

REFERENCES:
patent: 4251251 (1981-02-01), Blankenship
patent: 4264347 (1981-04-01), Shintani et al.
patent: 4737179 (1988-04-01), Tanaka et al.
patent: 4749396 (1988-06-01), Hicks, Jr.
patent: 4775401 (1988-10-01), Fleming et al.
patent: 5090980 (1992-02-01), Clasen
patent: 5106402 (1992-04-01), Geittner et al.
patent: 5917109 (1999-06-01), Berkey
patent: 392599 (1990-10-01), None
patent: 1000909 (2003-07-01), None
patent: 06329430 (1994-11-01), None
Electro-Optics Handbook, copyright 2000, Mc-Graw Hill, p. 12.11, figure 12.12. Reference for Figure 12.12 from S. Yoshida, Kougaku Gijutsu Contact, vol. 24, pp. 681-691, 1986.

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