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METHOD FOR PRODUCING A PRIMARY FORM FOR OPTICAL FIBERS, PRIMARY FORM, FINAL FORM, OPTICAL FIBER.
METHOD FOR PRODUCING A PRIMARY FORM FOR OPTICAL FIBERS, PRIMARY FORM, FINAL FORM, OPTICAL FIBER.
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机译:用于制造光纤的主要形式,主要形式,最终形式,光纤的方法。
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摘要
The present invention relates to a method for manufacturing a primary preform for an optical fibre, using a plasma chemical internal vapour deposition process, wherein doped or undoped glass-forming precursors are supplied to the interior of a hollow glass substrate tube, a reaction zone in the form of a plasma is moved back and forth along the length of the aforesaid hollow glass substrate tube between a point of reversal near the supply side and a point of reversal near the discharge side of the hollow substrate tube, wherein the substrate tube is positioned in a furnace and wherein such conditions are created in the aforesaid reaction zone that one or more glass layer packages made up of at least two separate glass layers are deposited on the interior of the aforesaid substrate tube.
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