Magnetically locatable optical fiber cables containing integrate

Details Magnetically locatable optical fiber cables containing integrate Magnetically locatable optical fiber cables containing integrate

1994-03-31

1996-11-19

Healy, Brian

Optical waveguides

Optical transmission cable

Loose tube type

385100, 385113, G02B 644

Patent

active

055771475

ABSTRACT:
The present invention provides a dielectric optical fiber cable which is capable of being remotely detected while buried. Specifically, this invention incorporates magnetic materials into a layer of epoxy to from a distinct layer within the sheath system of a communications cable. The magnetic particles generate a detection signal which is distinguishable from that generated by a solid metallic pipe and does not adversely affect the operation of existing components of the cable nor does the incorporation of the magnetic marker layer of the present invention unduly limit the speeds at which the overall cable can be manufactured.

REFERENCES:
patent: 4701016 (1987-10-01), Gartside et al.
patent: 4874219 (1989-10-01), Arroyo et al.
patent: 4938560 (1990-07-01), Arroyo et al.
patent: 4946237 (1990-08-01), Arroyo et al.
patent: 5006806 (1991-04-01), Rippingale et al.
patent: 5017873 (1991-05-01), Rippingale et al.
patent: 5189718 (1993-02-01), Barrett et al.
patent: 5305410 (1994-04-01), Arroyo et al.
patent: 5305411 (1994-04-01), Arroyo
patent: 5317665 (1994-05-01), Herrebrugh

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