Fiber optic cable having an extended elongation window

Details Fiber optic cable having an extended elongation window Fiber optic cable having an extended elongation window

1989-06-30

1990-07-31

Lee, John D.

G02B 644

Patent

active

049445707

ABSTRACT:
The present invention is directed toward a fiber optic cable comprising a central core which has one or more helical channels in its periphery. One or more tubes containing a dielectric water-blocking compound and one or more optical fibers are positioned in the channels. The fibers are randomly arranged within the tubes in such a way that tensile stresses on the cable are not transmitted to them, thus providing an elongation window. Finally, the assembly formed by the core and the tube or tubes is wrapped with a serving of metal wires. In one embodiment, the core and tubes may be wrapped with a tape layer before the outer metal wires are applied. Any interstices among the core, the tube or tubes, and tape may also be filled with another dielectric water-blocking compound.

REFERENCES:
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patent: 4389088 (1983-06-01), Trezequet
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patent: 4491387 (1985-01-01), Dey et al.
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patent: 4832443 (1989-05-01), Cameron et al.
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Printed Publication, "NTT Develops New Cable Housing 600 Optic Fibers", in Electronic Engineering Times, Jun. 2, 1986.

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