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US 8,488,932 B2Granted
Optical fiber with increased mechanical strength
AssigneeCorning Incorporated
InventorsKevin Wallace Bennett, Andrey V Filippov, Peter Joseph Ronco, Roger A Rose, Pushkar Tandon
Life of this patent
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Abstract
An optical fiber having increased mechanical strength is provided. The optical fiber includes an over cladding layer that has a compressive stress of at least 100 MPa.
Claims14
An optical fiber comprising a core, an inner cladding layer surrounding the core, and an over cladding layer surrounding the inner cladding layer, wherein the over cladding layer has a compressive stress of at least 100 MPa;
- and wherein the ratio of the viscosity of the over cladding layer to the viscosity of the inner cladding layer at any temperature of the optical fiber in the range of the softening point of the inner cladding layer ±200° C. is from about 0.1 to about 0.9.
An optical fiber comprising a core and an over cladding layer surrounding the core, wherein the over cladding layer has a compressive stress of at least 100 MP;
- and wherein the ratio of the viscosity of the over cladding layer to the viscosity of the core at any temperature of the optical fiber in the range of the softening point of the core ±200° C. is from about 0.1 to about 0.9.
Dependencies are inferred from the claim text.