Cables that include a conductor and an optical fiber. In some embodiments, the cable can include an optical fiber loosely disposed within an enclosure. A conductor layer can be disposed about the enclosure. An insulation layer can be disposed about the at least one conductor layer. An inner layer of armor strength members can be helically disposed about the insulation layer. An outer layer of armor strength members can be helically disposed about the inner layer of armor strength members. The armor strength members in the outer layer of armor strength members can be at an opposite helix compared to the armor strength members in the inner layer of armor strength members. An outer jacket can be disposed about the outer layer. In other embodiments, the cable can include an optical fiber in a coupled electro-optical package, where the conductor layer can be disposed about the electro-optical package.

An optical fiber cable includes: a core including optical fibers; an interposed layer including fibers wound around the core in an SZ shape; a reinforcing layer including metal and covering the interposed layer; and a sheath covering the reinforcing layer.

A cable comprising: a plurality of optical fiber cores; and one or more optical fiber core wires including one or more of the optical fiber cores. Further, at least one of the optical fiber core wire is fixed at a plurality of positions in a longitudinal direction of the cable so as to achieve substantially no displacement in a cable radial direction, at least a pair of the optical fiber core wires are fixed in a plane perpendicular to the longitudinal direction of the cable so as to achieve substantially no displacement relative to each other, and sensing of a strain profile in the longitudinal direction of at least the pair of the optical fiber core wires leads to achievement of sensing of a shape of the cable in the longitudinal direction.

Cables having buffer elements formed with two-dimensional fillers are described. A cable may include at least one optical fiber, and a buffer element may be formed around the at least one optical fiber. The buffer element may be formed from a material that includes a polypropylene-containing polymeric resin, a filler added to the polymeric resin that includes a plurality of two-dimensional particles, and an amphiphilic compatabilizer. A jacket may be formed around the at least one optical fiber and the buffer element.

An optical fiber cable includes: a plurality of optical fibers or a plurality of optical fiber ribbons; a cable sheath inside which a plurality of the optical fibers or a plurality of the optical fiber ribbons are housed; and four or more tensile strength member units which are provided so as to be embedded inside the cable sheath, and in which two or more tensile strength members are paired with each other, in which the four or more tensile strength member units are respectively provided at locations facing each other with a center of the optical fiber cable interposed therebetween in a cross section in a radial direction of the optical fiber cable, and in which a cable outer diameter of the optical fiber cable is 6 mm or more and 16 mm or less.

A rollable optical fiber ribbon utilizing low attenuation, bend insensitive fibers and cables incorporating such rollable ribbons are provided. The optical fibers are supported by a ribbon body, and the ribbon body is formed from a flexible material such that the optical fibers are reversibly movable from an unrolled position to a rolled position. The optical fibers have a large mode filed diameter, such as ≥9 microns at 1310 nm facilitating low attenuation splicing/connectorization. The optical fibers are also highly bend insensitive, such as having a macrobend loss of ≤0.5 dB/turn at 1550 nm for a mandrel diameter of 15 mm.

The specification relates to a fiber optic cable assembly. The fiber optic cable assembly includes: an outer sheath; fiberglass reinforced panels; a pull material; an inner jacket; a strength material; non-interlocking armor; and a tight buffer of optical fibers.

A ferrule-based fiber optic connectors having a connector assembly with a ferrule insertion stop for limiting the insertion of a ferrule into a ferrule sleeve are disclosed. In one embodiment, the fiber optic connector comprising a connector assembly, ferrule insertion stop, a connector sleeve assembly and a female coupling housing. The connector assembly comprises a ferrule and a resilient member for biasing the ferrule forward and the connector sleeve assembly comprises a housing and a ferrule sleeve, where the ferrule of the connector assembly is at least partially disposed in the ferrule sleeve when assembled. The ferrule insertion stop limits the depth that the ferrule may be inserted into the ferrule sleeve.

A fiber optic bundle for incorporation into a cable for use in a well. The bundle includes multiple fiber optic threads that are helically wound about one another at a zero degree lay angle for structural reinforcement. Further, the cable that employs the bundle may be coupled in nature and gas proof thereby rendering the fiber optics mechanically responsive for improved accuracy in detections during use in a well application.

A cable that protects an object includes: a sheath; and a cylindrical reinforcement member disposed inside the sheath and that surrounds the object. The cylindrical reinforcement member has a first side edge and a second side edge that extend in a longitudinal direction. The cylindrical reinforcement member is formed of a cable reinforcement sheet including: a first metal sheet; and a second metal sheet joined to the first metal sheet. A portion of the first metal sheet overlaps a portion of the second metal sheet, and the overlapping portions define a joint portion where the first metal sheet and the second metal sheet are joined. The joint portion is inclined, from the second side edge to the first side edge, toward the first metal sheet.