Abstract: The invention concerns a method of SZ stranding into one strand a bundle of two or more flexible micromodules, each micromodule comprising one or more optical fibers. A first pulley is located with its winding surface adjacent to a longitudinal axis of a cabling line. The bundle of micromodules is guided over the winding surface of the first pulley, the first pulley being rotating around the longitudinal axis of the cabling line. The rotational speed, or the rotational direction of the first pulley, is alternating.

Abstract: An exemplary optical cable comprises a sheath surrounding a cavity and a plurality of modules arranged within the cavity with a filling ratio between 20 and 50%. Exemplary modules include four to twelve optical fibers and a tube surrounding the optical fibers. An exemplary tube has a layered structure including an inner layer of polycarbonate and an outer layer of low friction polymer, such as polyamide and/or fluorinated polymer. An exemplary tube has a ratio between its inner diameter (di) and its outer diameter (do) between 0.45 and 0.55, and its outer layer has a thickness between 0.05 and 0.15 mm. The filling ratio of the module is typically 55% or greater.

Abstract: An optical cable (1) comprises a sheath (2) surrounding a cavity (3) and a plurality of substantially parallel modules (4) arranged into said cavity (3) with a filling ratio between 20 and 50%; each of said modules (4) comprises: •four to twelve fibers (9), •A tube (5) surrounding the fibers (9) that comprises a mix of polycarbonate and a low friction polymer, chosen from the group of fluorinated polymers and polyamide; said tube (5) having a ratio between its inner di and outer do diameters between 0.45 and 0.55, and comprising an outer low friction polymer layer (6) having a thickness between 0.05 and 0.15 mm, •A filling ratio of said module 4 greater than 55%.

Abstract: A method of manufacturing an aerial micromodule cable with excess length of an optical core is disclosed, the cable comprising a cable jacket defining a cavity in which the optical core is arranged, said cable having two rigid strength members embedded in the wall of the jacket; the method comprising guiding the cable over a wheel; wherein a first plane (P1) intersecting the center of gravity (C1) of the cable cavity is parallel to a second plane (P2) intersecting the two rigid strength members, said first and second planes (P1, P2) being offset from each other, and wherein, during said guiding, the two rigid strength members are positioned closer to the wheel than the first plane (P1) so as to cause the optical core to have a core excess length of at least 0.05%.

Abstract: A method of manufacturing an aerial micromodule cable with excess length of an optical core is disclosed, the cable comprising a cable jacket defining a cavity in which the optical core is arranged, said cable having two rigid strength members embedded in the wall of the jacket; the method comprising guiding the cable over a wheel; wherein a first plane (P1) intersecting the centre of gravity (C1) of the cable cavity is parallel to a second plane (P2) intersecting the two rigid strength members, said first and second planes (P1, P2) being offset from each other, and wherein, during said guiding, the two rigid strength members are positioned closer to the wheel than the first plane (P1) so as to cause the optical core to have a core excess length of at least 0.05%.

Abstract: The invention concerns a method of SZ stranding into one strand a bundle of two or more flexible micromodules, each micromodule comprising one or more optical fibers. A first pulley is located with its winding surface adjacent to a longitudinal axis of a cabling line. The bundle of micromodules is guided over the winding surface of the first pulley, the first pulley being rotating around the longitudinal axis of the cabling line. The rotational speed, or the rotational direction of the first pulley, is alternating.

Abstract: An optical cable (1) comprises a sheath (2) surrounding a cavity (3) and a plurality of substantially parallel modules (4) arranged into said cavity (3) with a filling ratio between 20 and 50%; each of said modules (4) comprises:•four to twelve fibers (9),•A tube (5) surrounding the fibers (9) that comprises a mix of polycarbonate and a low friction polymer, chosen from the group of fluorinated polymers and polyamide; said tube (5) having a ratio between its inner di and outer do diameters between 0.45 and 0.55, and comprising an outer low friction polymer layer (6) having a thickness between 0.05 and 0.15 mm,•A filling ratio of said module 4 greater than 55%.

Abstract: The cable (1) includes a cable outer sheath (12) surrounding a cable core (11) and at least a ring (21, 23, 25, 28, 30) surrounding partly the cable outer sheath (12) so that the ring (21, 23, 25, 28, 30) presses the cable outer sheath (12) on the cable core (11) in a way adapted to increase a transfer, on the cable core (11), of a pulling effort exerted on the cable outer sheath (12).

Abstract: A method is proposed for access to optical fibers contained in an optical module, with a flexible structure for example, of an optical fiber transmission cable. The optical module includes a protective sheath in which the optical fibers are housed. Such a method includes: extracting the optical module from the transmission cable; degrading a portion to be stripped of the sheath of the optical module by heating to a specific temperature, for a predetermined duration; and accessing the optical fibers by stripping the portion to be stripped that has been degraded.

Abstract: An optical-fiber interconnect cable includes one or more optical fibers and one or more electrical conductors surrounded by an outer jacket. The optical fibers, such as multimode optical fibers, are typically enclosed within a flexible polymeric tube to form a flexible subunit.

Abstract: The invention relates to a cable (10) that includes an outer sheath (11) defining a longitudinal cavity (12). The cable (10) also includes a plurality of elements (1) extending within the cavity. Typically, the elements are at least partially coated with a lubricant film.

Abstract: The cable (1) includes a cable outer sheath (12) surrounding a cable core (11) and at least a ring (21, 23, 25, 28, 30) surrounding partly the cable outer sheath (12) so that the ring (21, 23, 25, 28, 30) presses the cable outer sheath (12) on the cable core (11) in a way adapted to increase a transfer, on the cable core (11), of a pulling effort exerted on the cable outer sheath (12).

Abstract: Disclosed is a reduced-diameter optical-fiber cable that possesses a high fiber count and a high cable fiber density.

Abstract: A buffered optical fiber (10) comprises a central core (11) surrounded by an optical cladding (12), a coating (13) surrounding the optical cladding, a protective buffer (15) surrounding the coating and an intermediate layer (14) between the coating and the protective buffer. The intermediate layer consists of hot melt seal and peel material. The intermediate layer (14) may be extruded in tandem with the outer protective buffer (15).

Abstract: A method is proposed for access to optical fibres contained in an optical module, with a flexible structure for example, of an optical fibre transmission cable. The optical module includes a protective sheath in which the optical fibres are housed. Such a method includes: extracting the optical module from the transmission cable; degrading a portion to be stripped of the sheath of the optical module by heating to a specific temperature, for a predetermined duration; and accessing the optical fibres by stripping the portion to be stripped that has been degraded.

Abstract: The present invention relates to optical-fiber modules having improved accessibility. In a typical embodiment, the optical-fiber module includes one or more optical fibers surrounded by an intermediate layer. The intermediate layer typically includes a polymeric medium with a liquid lubricant dispersed therein. A buffer tube encloses the optical fibers and the intermediate layer.

Abstract: The invention relates to a flat telecommunication cable in which optical fibers are positioned within micromodules. The micromodules are coupled to a surrounding, ribbon-like cable jacket, thereby preventing the micromodules from sagging within the cable during vertical installations. The invention also relates to a method of extracting optical fibers from such a cable.

Abstract: Disclosed is an improved optical fiber possessing a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The secondary coating provides improved ribbon characteristics for structures that are robust, yet easily entered (i.e., separated and stripped). The optical fibers in accordance in the present invention may be incorporated into a reduced-diameter optical-fiber cable that possesses a high fiber count and a high cable fiber density.

Abstract: A buffered optical fiber structure includes an optical fiber, a mechanical reinforcement member extending along the optical fiber, a protective sheath having a cavity containing the optical fiber and the mechanical reinforcement member, and an intermediate material contacting the protective sheath and surrounding the optical fiber and the mechanical reinforcement member.

Abstract: A cutter tool for cutting at least one optical fiber arranged freely in a cavity of a telecommunications cable, the tool including a cutting element and a tube, the cutting element being adapted to form a snare around at least one optical fiber to be cut, the snare providing two strands of filament adapted to be introduced in the tube, and the tool enabling an optical fiber branch connection to be made over a long distance through an existing tapping window.