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US 6,731,849 B1Granted
Coating for optical fibers
AssigneeLightMatrix Technologies, Inc.
InventorsBawa Singh, Nalin Kumar, Vipulkumar Patel, Krishna Linga, Ali Ouali
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AssigneeLightMatrix Technologies, Inc.
InventorsBawa Singh, Nalin Kumar, Vipulkumar Patel, Krishna Linga, Ali Ouali
Estimating the term…
An improved coating for optical fibers is described. The present invention is a dimensionally precise and uniform coating with low-porosity. The improved coating is applied via sputtering within a vacuum chamber. Environmental conditions are monitored within a cylindrical magnetron during sputtering. Sputtering is adjusted or temporarily ceased when environmental conditions approach a damage threshold. Sputtered particles within a plasma cloud are dimensionally similar and adhere to an optical fiber in a volume efficient arrangement forming a more precise, denser, and more adherent coating. Embodiments of the present invention provide improved pull strength by compressively constraining the optical fiber within the coating and by closing microcracks.
An adherent coating for an optical fiber with improved pull strength comprising a plurality of layers, said layers sputtered onto said optical fiber, said coating covering at least one flaw along said optic fiber.
An improved coating for an optical fiber comprising a thermal barrier material, said coating having a pull strength of at least 2 pounds.
An adherent coating for an optical fiber with improved pull strength comprising a plurality of layers, said layers sputtered onto said optical fiber, said coating forming a compressively strained cover along said optical fiber.
An improved coating for an optical fiber comprising a plurality of layers wherein at least one of said layers is a thermal barrier material, said coating having a pull strength of at least 2 pounds.
An improved coating for an optical fiber comprising a plurality of layers wherein at least one of said layers is a thermal barrier material, said coating has a first layer composed of a metal bonding to said optical fiber, a second layer composed of a thermal barrier material bonding to said first layer, and a third layer composed of an oxidation resistive metal bonding to said second layer.
An adherent coating for an optical fiber with improved pull strength comprising a plurality of layers, said layers sputtered onto said optical fiber, said layers composed of at least one commercially pure metal, said coating having a pull strength of at least 2 pounds.
Dependencies are inferred from the claim text.