Method of fabricating a GRIN fiber
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United States of America Patent
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Oct 12, 2004
Grant Date -
Jun 26, 2003
app pub date -
Dec 11, 2002
filing date -
Feb 17, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for fabricating a GRIN fiber includes forming a tube of silica-glass having a tubular core and a concentric tubular cladding adjacent and external to the tubular core. The core has a dopant density with a radially graded profile. The method includes partially collapsing the tube by applying heat thereto. The partially collapsed tube has a central channel. The method includes passing a glass etchant through the central canal to remove an internal layer of silica glass, and then, collapsing the etched tube to a rod-like preform.
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