Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1997-05-23
1999-05-18
Krynski, William
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
428367, 428368, 428375, 428389, 428388, 385123, C08J5/08
Patent
active
059049839
ABSTRACT:
An optical fiber protected from degradation caused by corrosion from environmental fluids. The optical fiber includes a core-cladding assembly surrounded with a thin quasi metal oxide film (preferably .about.10 nm in depth). Over time, particularly under the influence of the elevated temperatures, the initially deposited reagents of the thin film oxidize or hydrolyze, removing the organic components, and bonding a quasi metal oxide film on the surface of the cladding. The resulting film significantly retards corrosion by blocking the environmental fluids from reacting with flaws in the cladding surface of the fiber, thus improving the mechanical performance and reliability of the optical fiber. In addition, the thin film protects the fiber against incidental abrasions. Alternatively, the quasi metal oxide reagents are deposited into a protective polymer layer of the fiber or a filling compound of a fiber cable, rather than directly onto the cladding surface, whereby the same protective effect is achieved when the reagents diffuse through the polymer layer or filling compound to the core-cladding surface.
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Matejec, V. et al., "Mechanical Strength of Optical Fibers Coated By Thin Oxide Layers Prepared By Sol-Gel Method," Chemical Abstracts, Issue 5, 1995, Abstract only, 122:112628e.
Chan Maureen Gillen
Inniss Daryl
Katz Howard Edan
Kuck Valerie Jeanne
Schilling Marcia Lea
Gray J. M.
Krynski William
Lucent Technologies - Inc.
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