Air blown fiber (ABF) tube cable with central innerduct

Details Air blown fiber (ABF) tube cable with central innerduct Air blown fiber (ABF) tube cable with central innerduct

1998-10-28

2000-08-08

Ullah, Akm E.

Optical waveguides

Optical transmission cable

Loose tube type

G02B 644

Patent

active

061013048

ABSTRACT:
A fiber optic cable assembly with enhanced flexibility and reduced installation cost in contrast to conventional multiple duct systems. The fiber optic cable assembly comprises a central innerduct adapted to provide a pathway for installing conventional cable by pulling of the cable therethrough. A plurality of air blown fiber (ABF) tubes are positioned around the circumference of the central innerduct for installing air blown optical fiber bundles therethrough, and a plurality of strength elements are provided around the circumference of the central innerduct and interposed among the plurality of air blown fiber (ABF) tubes. A layer of water-blocking material is provided between an outer jacket and the air blown fiber (ABF) tubes and strength members.

REFERENCES:
patent: 4609519 (1986-09-01), Pichard et al.
patent: 4678581 (1987-07-01), Nogi et al.
patent: 4997256 (1991-03-01), Sano et al.
patent: 5109456 (1992-04-01), Sano et al.
patent: 5970195 (1999-10-01), Brown

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