Method for producing an optical preform having a POD cladding glass layer

Method for producing an optical preform having a POD cladding glass layer

The invention relates to a plasma deposition process for producing an optical preform, which is characterized by a cladding glass layer having a non-round internal cross-section together with high fluorine doping and axially and radially specified dopant distribution, which in the simplest case is a...

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Hauptverfasser: BRAEUER KARSTEN, BAUER PETER, SCHULTHEIS ANDREAS, LANGNER ANDREAS, SCHMIDT RICHARD, SCHOETZ GERHARD, BOEDIGER PAUL
Format: Patent
Sprache:eng
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CHEMISTRY
GLASS
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
METALLURGY
MINERAL OR SLAG WOOL
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creator BRAEUER KARSTEN
BAUER PETER
SCHULTHEIS ANDREAS
LANGNER ANDREAS
SCHMIDT RICHARD
SCHOETZ GERHARD
BOEDIGER PAUL
description The invention relates to a plasma deposition process for producing an optical preform, which is characterized by a cladding glass layer having a non-round internal cross-section together with high fluorine doping and axially and radially specified dopant distribution, which in the simplest case is as uniform as possible. For this purpose, a two-stage method is proposed, wherein a substrate body having a non-round cross-section is first reshaped into a coated substrate body having a circular cross-section in that a POD filling layer made of quartz glass having the nominal fluorine concentration is deposited onto a present filling surface and rounded by grinding, and then in the second stage of the method a POD sheathing glass layer made of fluorine-doped quartz glass and having a circular-ring-shaped cross-section is deposited.
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subjects CHEMISTRY
GLASS
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
METALLURGY
MINERAL OR SLAG WOOL
title Method for producing an optical preform having a POD cladding glass layer
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