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Multi-fiber, fiber optic cables and cable assemblies providing constrained optical fibers within an optical fiber sub-unit

  • US 9,891,397 B2
  • Filed: 07/21/2016
  • Issued: 02/13/2018
  • Est. Priority Date: 06/22/2011
  • Status: Active Grant
First Claim
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1. A fiber optic cable assembly, comprising:

  • a fiber optic cable comprising;

    a cable jacket;

    one or more cable strength members disposed within the cable jacket in a first length; and

    one or more optical fiber sub-units disposed within the cable jacket in a second length that is greater than the first length, wherein;

    the one or more optical fiber sub-units each comprise a plurality of optical fibers and one or more sub-unit strength members disposed adjacent to each other in a sub-unit jacket such that movement of the plurality of optical fibers is radially constrained by an interior wall of the sub-unit jacket and the one or more sub-unit strength members;

    the plurality of optical fibers are in friction contact with the one or more sub-unit strength members constraining relative longitudinal movement of the plurality of optical fibers within the sub-unit jacket;

    the one or more optical fiber sub-units disposed adjacent to the one or more cable strength members within the cable jacket;

    the one or more optical fiber sub-units are disposed within the cable jacket adjacent to the one or more cable strength members to allow movement between the one or more optical fiber sub-units and the one or more cable strength members within the cable jacket; and

    an end portion of the fiber optic cable comprises end portions of the one or more optical fiber sub-units and end portions of the one or more cable strength members both exposed from an end portion of the cable jacket; and

    a furcation assembly receiving the end portion of the fiber optic cable at a first end of the furcation assembly, wherein;

    the furcation assembly terminates the end portion of the cable jacket and the end portions of the one or more cable strength members; and

    the end portions of the one or more optical fiber sub-units extending through and from a second end of the furcation assembly.

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