Method for making an optical fiber comprising nanoparticles and preform used in the manufacture of such a fiber
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United States of America Patent
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Feb 2, 2010
Grant Date -
Nov 20, 2008
app pub date -
Aug 28, 2006
filing date -
Sep 16, 2005
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Abstract
The invention concerns a method for making an optical fiber (18) including the following steps: producing a preform (10) containing nanoparticles provided with an active element including at least one recess (14) proximate at least part of the nanoparticles; fiber drawing of the preform (10) by introducing a non-oxidizing gas in the recess (14), thereby limiting the risks of oxidizing the nanoparticles of the preform (10). The preform (10) designed to the manufacture of an optical fiber (18) by the inventive method comprises nanoparticles provided with an active element in a doped zone (12) and at least one recess (14) proximate the doped zone (12).
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