Water-blocked optical fiber communications cable

Details Water-blocked optical fiber communications cable Water-blocked optical fiber communications cable

1995-02-21

1997-06-24

Ngo, John

Optical waveguides

Optical transmission cable

Loose tube type

385103, 385112, G02B 644

Patent

active

056424523

ABSTRACT:
A water-tight optical fiber communications cable constructed without the use of a viscous water-blocking compound other than in the buffer tubes thereof. One or more water swellable yarns are helically wrapped around the central strength member to absorb any water which may be present in the interstices between the central strength member and the buffer tubes. Additionally, a water swellable tape is disposed between the core and the jacket of the cable to absorb water from the interstices between the buffer tubes and elements overlaying the core of the cable.

REFERENCES:
patent: 4703998 (1987-11-01), Uchioke et al.
patent: 4815813 (1989-03-01), Arroyo et al.
patent: 4909592 (1990-03-01), Arroyo et al.
patent: 4913517 (1990-04-01), Arroyo et al.
patent: 5133034 (1992-07-01), Arroyo et al.
patent: 5389442 (1995-02-01), Arroyo et al.
patent: 5390273 (1995-02-01), Rahman et al.
patent: 5481635 (1996-01-01), Arroyo et al.

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