At&t Bell Laboratories

Don A Hadfield

Robert F Gleason

Alfred G Richardson

Stephen N Anctil

John S Logan, Jr

Lendall R Caverly, Jr

Martin Q Thornton

Nicholas Semitros

Daniel A Meade

Norman E McNerney

There is disclosed a method for fabricating an undersea communications cable core containing optical fibers. The method includes heating a central strength member and extruding a first layer of thermoplastic elastomer onto the heated central strength member. Paying out the optical fibers from a plurality of bobbins. Helically laying the optical fibers onto the first layer of thermoplastic elastomer with a planetary motion. The optical fibers passing entirely enclosed through a separate part of a whipping prevention enclosure from the bobbins to a rotating closing die. Passing the central strength member, coated with the first layer of thermoplastic elastomer and helically wrapped with the optical fibers, through the closing die, which rotates with the rotation of the helix, applying to the optical fibers forces directed radially into the core but without applying to the optical fibers forces directed tangentially to the surface of the first layer of thermoplastic material. Extruding a second layer of thermoplastic elastomer over the fibers to merge with the first layer of thermoplastic elastomer.

Method for fabricating a cable core including optical fibers

There is disclosed an undersea communications cable containing optical fibers. The cable is fabricated so that fiber optical loss characteristics vary only slightly with changes in tensile strain in the cable.

Optical fiber cable including a strain equalizing adhesive which

There is disclosed a method for fabricating an undersea communications cable containing optical fibers. The cable is fabricated so that fiber optical loss characteristics vary only slightly with changes in strain in the cable. During fabrication an adhesive bonds the cable core containing the optical fibers to a layer of steel wire for preventing creep therebetween.

Method for fabricating an optical fiber cable

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North Hampton, NH, United States of America

Don A Hadfield