Manufacture of depressed index optical fibers
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United States of America Patent
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Issued Date -
Sep 6, 2007
app pub date -
Mar 2, 2006
filing date -
Mar 2, 2006
priority date (Note) -
Abandoned
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Abstract
Described herein is a method for making a depressed index cladding for the inner cladding of an optical fiber. The method involves making the depressed index cladding in two steps. The innermost portion of the inner cladding is produced using a soot method, thereby deriving the advantages of the soot method for the region of the cladding that carries the most optical power, then forming the remaining portion of the inner cladding layer using a rod-in-tube step. This method effectively marries the advantages and disadvantages of both methods.
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