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AssigneeSyracuse University
InventorsPhilipp G. Kornreich, James Flattery, Douglas V. Keller, Jr.
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A method of forming a preform which has a glass core surrounded by an outer glass cladding with a coating of an particulate optically active material disposed between the core and cladding. The method includes providing a glass core having a viscosity which lies within a given preselected temperature range, followed by forming a coherent coating of an optically active particulate material over the surface of the core, with the coating material having a viscosity which is equal to or less than the viscosity of the glass core. A glass cladding is formed over the coated layer, with the cladding glass having a viscosity which overlaps the viscosity of the core glass. The optically active material is an inorganic material which includes a metal, metal alloy, ferrite, magnetic material and a semiconductor. The invention includes the product formed by the process.
A method of forming an optical fiber from a preform having a glass core surrounded by an outer glass cladding with a coating of a particulate optically active material between said core and cladding, said method comprising:
An optical fiber having a glass core surrounded by an outer glass cladding with a substantially uniform coating of a particulate optically active material between said core and cladding with said glass core having a viscosity which lies within a given preselected temperature range with a particulate coating of an optically active material over the surface of said core with said coating material having flow properties which are equal to or less than the viscosity of said glass core;
Dependencies are inferred from the claim text.