Pressure resistant submarine optical fiber cable

Details Pressure resistant submarine optical fiber cable Pressure resistant submarine optical fiber cable

G - Physics

02

B

88/97.6

G02B 6/44 (2006.01)

Patent

CA 1251074

ABSTRACT OF THE DISCLOSURE A submarine cable with optical fibers which prevents damage to the fibers due to water pressure without the use of an external armor. The cable has a central strand which provides the cable tensile strength and which is surrounded by helically wound tubes which enclose the optical fibers. A layer of plastic material may be provided intermediate the tubes and the strand and the tubes are covered by a layer of plastic material in contact with the tubes. The layer of plastic material contacting the tubes is closely surrounded by a thin metal sheath which, in turn, is closely surrounded by a layer of plastic material. The tube and any spaces radially inwardly of the tubes are filled with a practically incompressible fluid, such as a grease or jelly. The strand may include a wire of good electrical con- ductivity which, with the sheath, may be used to supply electrical power to repeaters along the cable length.

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