Single-mode optical fiber with thin coating for high density cables and interconnects

US11782207B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• Scott Robertson Bickham · Corning, US
• Matthew Ryan Drake · Corning, US
• Shandon Dee Hart · Elmira, US
• Ming-Jun Li · Horseheads, US
• Joseph Edward McCarthy · Hornell, US
• Weijun Niu · Corning, US
• Pushkar Tandon · Corning, US

Key dates

• Filing date: Jul 21, 2021
• Grant date: Oct 10, 2023
• Expiry date: Jul 21, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/4403
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical fiber is provided that includes a core region, a cladding region having a radius less than about 62.5 microns; a polymer coating comprising a high-modulus layer and a low-modulus layer, wherein a thickness of the low-modulus inner coating layer is in a range of 4 microns to 20 microns, the modulus of the low-modulus inner coating layer is less than or equal to about 0.35 MPa, a thickness of the high-modulus coating layer is in a range of 4 microns to 20 microns, the modulus of the high-modulus inner coating layer is greater than or equal to about 1.6 GPa, and wherein a puncture resistance of the optical fiber is greater than 20 g, and wherein a microbend attenuation penalty of the optical fiber is less than 0.03 dB/km, and wherein an outer diameter of the coated optical fiber is less than or equal to 175 microns.