Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1984-02-09
1986-01-14
Schor, Kenneth M.
Glass manufacturing
Processes
Forming product or preform from molten glass
65 182, 4272552, C03B 3701
Patent
active
045643784
ABSTRACT:
A method of producing a preform for light waveguides wherein glass-forming chlorides, e.g. SiCl.sub.4 and/or GeCl.sub.4, are reacted with water vapor to form a glass forming layer, e.g. SiO.sub.2 soot. This reaction advantageously takes place at relatively low temperatures, e.g. 20.degree. C.-800.degree. C. Surprisingly, almost no SiO.sub.2 deposition takes place on higher heated surfaces, e.g. in the reaction chamber. Elimination of annoying OH.sup.- ions is possible.
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Kazunori Chida et al., "Fabrication of OH-Free Multimode Fiber by Vapor Phase Axial Deposition", pp. 1883-1889; IEEE Journal of Quantum Electronics, vol. QU-18, No. 11; Nov. 1982.
Michael G. Blankenship et al., "The Outside Vapor Deposition Method of Fabricating Optical Waveguide Fibers", pp. 1418-1423; IEEE Journal of Quantum Electronics, vol. QU-18; No. 10; Oct. 1982.
Licentia Patent-Verwaltungs-GmbH
Schor Kenneth M.
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