Multimode optical fiber for high rate LAN, method for manufacturing the same, and test bed thereof
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United States of America Patent
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Issued Date -
Jan 5, 2006
app pub date -
Sep 14, 2004
filing date -
Jul 2, 2004
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Abandoned
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Abstract
Disclosed is a method for manufacturing a multimode optical fiber for high data rate LAN using MCVD, which includes a deposition process for forming a clad layer and a core layer, doped with an additive for controlling a refractive index, on an inner wall of a quartz tube by injecting a deposition gas into the quartz tube and applying heat to outside of the quartz tube; and a collapse process, which is repeatedly conducted N times, for filling up a gap in the quartz tube by applying heat of a temperature over a deposition temperature to the quartz tube after the core layer is completely deposited. In the method, together with an N-1.sup.th collapse process, an etching process of injecting a reaction gas for etching into the quartz tube is conducted in order to eliminate a portion of which refractive index is transformed due to evaporation of the additive.
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