G - Physics
02
B
88/97.64
G02B 6/04 (2006.01) G02B 6/00 (2006.01) H01B 13/14 (2006.01)
Patent
CA 1265946
ABSTRACT An optical cable, especially suitable for use as an aerial cable, comprises a circumferentially rigid, flexible tube which is of composite form and comprises a plurality of elongate flexible bodies helically laid up together. Each of these bodies is of a cross-section approximating to a sector of an annulus and comprises extruded electrically insulating plastics material, e.g. polypropylene or nylon, and a multiplicity of longitudinally stressed elongate flexible non-metallic reinforcing elements, e.g. Kevlar, each substantially encapsulated in the plastics material, the multiplicity of non-metallic reinforcing elements being evenly distributed throughout the cross-sectional area of the body. An outer protective non metallic sheath surrounds the tube and at least one flexible optical guide, e.g. a separate optical fibre, optical bundle or optical fibre ribbon structure, is housed in the bore of and is movable relative to the tube.
528560
Bicc Public Limited Company
Fetherstonhaugh & Co.
LandOfFree
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