Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – Process of manufacturing optical fibers – waveguides – or...
Reexamination Certificate
2011-01-11
2011-01-11
Hoffmann, John (Department: 1791)
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
Process of manufacturing optical fibers, waveguides, or...
C065S425000, C065S417000, C065S529000, C065S530000
Reexamination Certificate
active
07866188
ABSTRACT:
The present invention relates to an apparatus for carrying out a PCVD deposition process, wherein one or more doped or undoped layers are coated onto the interior of a glass substrate tube, which apparatus comprises an applicator having an inner and an outer wall and a microwave guide which opens into the applicator, which applicator extends around a cylindrical axis and which is provided with a passage adjacent to the inner wall, through which the microwaves can exit, over which cylindrical axis the substrate tube can be positioned, and wherein at least one choke of annular shape having a length l and a width w is centred around the cylindrical axis within the applicator.
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Deckers Rob Hubertus Matheus
Van Stralen Mattheus Jacobus Nicolaas
Draka Comteq B.V.
Hoffmann John
Summa, Additon & Ashe, P.A.
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