Fiber optic assemblies and cables having subunits with a security feature

US6922511B2 · kind B2 · utility

Assignee

• Corning Cable Systems LLC · US

Inventors

• Brian Keith Rhoney · Hickory, US
• Samuel Don Navé · Newton, US
• James Arthur Register, III · Hickory, US
• William M. Hobbs · Arlington, US
• Jill D. McPeak · Denver, US
• Roderick S. Bayliss, Jr. · Athens, US

Key dates

• Filing date: Mar 31, 2003
• Grant date: Jul 26, 2005
• Expiry date: May 22, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/4433
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

One embodiment is a fiber optic cable including at least one subunit, a tube, a plurality of strength members, and a cable jacket. The subunit includes a fiber optic ribbon and a sheath, wherein the sheath is tight-buffered about the fiber optic ribbon, thereby inhibiting buckling of the ribbon during temperature variations. The tube houses at least a portion of the at least one subunit to form a tube assembly. The plurality of strength members are disposed radially outward of the tube and are surrounded by the cable jacket. Other embodiments include a plurality of subunits in a stack with each subunit having a sheath for security purposes. Additionally, a tube assembly can have a fiber optic packing density of about 0.05 or greater.