An optical cable includes an optical module which includes first optical fibers and a first retaining element arranged about the first optical fibers. The module also includes second optical fibers arranged about the first retaining element, the second optical fibers being arranged on at least one circumference concentric with the first retaining element. The module also includes a second retaining element arranged about the second optical fibers, which is also substantially coaxial with the first retaining element. This optical module with coaxial retaining elements and fibers has a particularly high fiber density, while preserving the possibility to uniquely identify all the fibers.

A optical cable member includes an optical cable, a fixing member, a first housing tube, and a second housing tube. The optical cable includes an optical fiber and a tensile strength member. In the optical cable, a cable main body housing the optical fiber and the tensile strength member, and a cable exposure portion in which the optical fiber and the tensile strength member are exposed to an outside are provided. The fixing member fixes the tensile strength member. The first housing tube is disposed between the fixing member and the cable main body, houses the tensile strength member therein, and allows the optical fiber to extend therein. The second housing tube is disposed on a side opposite to the first housing tube of the fixing member, and houses the optical fiber of the cable exposure portion therein. The second housing tube is a bendable member.

The present invention relates to an optical fiber cable (100) comprising an optical fiber unit (102), optical fiber (104), a tight buffer layer (106), a sheath (108), a plurality of strength members (110a, 110b, 110c), a water swellable element (112) and a filling strength member (SM) 114. In particular, the optical fiber cable (100) is an all-dielectric communication cable with a preferential bending ratio between 1-2. Moreover, the strength members (110a, 110b, 110c) have an elastic modulus greater than 45 GPa and each strength member of the plurality of strength members (110a, 110b, 110c) has a diameter between 0.4 mm to 0.8 mm.

An optical fiber protection system includes an optical fiber, a light source, a protection circuit, a sensor, and a controller. The light source is configured to transmit a signal to the optical fiber. The protection circuit extends along a length direction of the optical fiber. The sensor is electrically connected to the protection circuit. The controller is electrically connected to the sensor and the light source.

The present invention relates to an optical fiber cable (200) with a different binder pitch comprising a plurality of tubes (204) with one or more optical transmission elements (202), a first binder (208) and a second binder (210) wound around the plurality of tubes (204) helically. The first lay length of the first binder (208) is different than a second lay length of the second binder (210) and a lay ratio of the first lay length to the second lay length is equal to or more than 1.2. And the difference between a first stranding angle and a second stranding angle of the first binder (208) and the second binder (210) respectively is greater than or equal to 5 degrees.

An optical fiber drop cable. The optical fiber drop cable includes at least one optical fiber and at least one inner tensile element wound around the at least one optical fiber having a laylength of at least 200 mm. The optical fiber drop cable also includes an interior jacket disposed around the at least one inner tensile element and an exterior jacket having an inner surface and an outer surface. The optical fiber drop cable further includes at least one outer tensile element disposed between the interior jacket and the outer surface of the exterior jacket. Each of the at least one outer tensile element has a laylength of at least 1 m. The exterior jacket includes at least one polyolefin, at least one thermoplastic elastomer, and at least one high aspect ratio inorganic filler. The exterior jacket has an averaged coefficient of thermal expansion of no more than 120 (10.sup.−6) m/mK.

An optical fiber cable includes: a core including optical fibers; a reinforcing wrap that surrounds the core; and a sheath that accommodates the core and the reinforcing wrap. The reinforcing wrap includes an overlapping portion. A first end portion of the reinforcing wrap overlaps a second end portion of the reinforcing wrap at a portion of the reinforcing wrap in a circumferential direction of the optical fiber cable in a cross-sectional view.

A cable may include an optical fiber and a tight buffer layer formed around the optical fiber. Additionally, a conductive toner wire may be coupled to the tight buffer layer in order to reduce shrinkage of the tight buffer layer due to low temperatures. A maximum distance between the optical fiber and the toner wire may be 1.0 mm.

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 present disclosure incudes a fiber optic cable having a conduit including a conduit wall defining a conduit passage that extends longitudinally through the conduit. The conduit also includes an adhesive injection port defined through the conduit wall and at least one optical fiber within the conduit passage. The cable further includes a fiber lock including an adhesive volume in communication with the adhesive injection port. The adhesive volume includes a main adhesive volume positioned within the conduit passage and bonded to the optical fiber. The main adhesive volume is fixed to prevent longitudinal movement relative to the conduit.