The method for creating an optical fiber ribbon of the present disclosure includes a first step of arranging a plurality of optical fibers in parallel to each other for creating the optical fiber ribbon. In addition, the method includes a second step of intermittently bonding the plurality of optical fibers partially at specific intervals using a matrix material. Further, intermittent bonding of the plurality of optical fibers is in pattern of text. Furthermore, intermittent bonding of the plurality of optical fibers allows the optical fiber ribbon to bend along preferential axis. Moreover, intermittent bonding of the plurality of optical fibers is in pattern of text.

An optical fiber cable having a slot core which includes a plurality of ribs formed along a cable longitudinal direction and in which slot grooves for housing optical fibers are formed between the ribs. The optical fiber cable includes: subunits each of which is formed by bundling a plurality of intermittent-connection-type optical fiber ribbons in which a connection part where adjacent optical fibers are connected to each other and a non-connection part where adjacent optical fibers are not connected to each other are intermittently provided in the longitudinal direction among some or all of optical fibers; and a thin-skin-shaped tube having Young's modulus lower than Young's modulus of a material forming the slot core. The subunits are housed in the slot grooves, and among the subunits in the slot grooves, at least a subunit located at an outer peripheral part of the slot grooves is covered with the tube.

Provided is an optical fiber ribbon and an optical fiber cable, which are adaptable to manufacture at a high velocity, in the intermittent connecting type optical fiber ribbon obtained by adhering and connecting adjacent colored optical fibers by intermittent connecting portions. In an optical fiber ribbon 2 of the present invention, since, in addition to polyol having a weight average molecular weight in a specific range, cellulose nanofiber is contained in a specific range in a material forming an intermittent connecting portion 3, the Newtonian region between a low shear rate region and a high shear rate region of the material forming the intermittent connecting portion 3 can be adjusted. Thus, scattering of the material due to a centrifugal force generated by rotation of an application roll that applies the material at the time of manufacture and the like can be suppressed, and the application amount to colored optical fiber 1 can be stabilized. In addition, the optical fiber ribbon 2 can maintain suppression of such scattering and the like even in the manufacture at a high linear velocity.

The present disclosure includes 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.

An optical fiber cable includes optical fiber ribbons, a slot rod and a cable jacket. The slot rod has slot grooves in which the optical fiber ribbons are housed. The cable jacket covers an outside of the slot rod. The optical fiber ribbons have, in a state in which optical fibers having an outer diameter of 0.22 mm or less are arranged in parallel, connecting portions at which adjacent ones of the optical fibers are connected to one another and non-connecting portions at which adjacent ones of the optical fibers are not connected to one another, which are provided intermittently in a longitudinal direction. A density of core number of the optical fibers included in the optical fiber cable is 4.8 cores/mm.sup.2 or more in a cross section of the optical fiber cable.

A fiber optic distribution cable includes a central inner jacket formed from one of a polyvinyl chloride or a low smoke zero halogen material, a plurality of optical fibers disposed within the inner jacket, and a plurality of first strength members disposed within the inner jacket. The fiber optic distribution cable further includes an outer jacket surrounding the central inner jacket, the outer jacket formed from the one of the polyvinyl chloride or the low smoke zero halogen material, and a plurality of second strength members disposed between the outer jacket and the central inner jacket. A fiber density of the cable is greater than 0.65 fibers per square millimeter.

The present invention relates to an optical fiber ribbon, comprising a plurality of adjacent optical fiber units extending in a longitudinal direction and arranged in parallel forming an optical fiber assembly having a width, each of the optical fiber units comprising either a single fiber or a group of at most three optical fibers, preferably two optical fibers, encapsulated with a matrix material; and a plurality of successive elongated rectilinear beads of a bonding material being arranged along a length of said assembly; each of said plurality of beads being configured to form an elongated bond between two adjacent optical fiber units of the plurality of optical fiber units; wherein a first bead forming a first bond connects a first pair of adjacent optical fiber units while the successive bond formed by the successive bead, connects a further pair of adjacent optical fiber units, wherein at least one optical fiber unit of the further pair differs from the optical fiber units of the first pair; wherein at each longitudinal position of the optical fiber assembly there is at most one bond. The present invention moreover relates to a method of producing such an optical fiber ribbon.

A fiber optic distribution cable includes a central inner jacket formed from one of a polyvinyl chloride or a low smoke zero halogen material, a plurality of optical fibers disposed within the inner jacket, and a plurality of first strength members disposed within the inner jacket. The fiber optic distribution cable further includes an outer jacket surrounding the central inner jacket, the outer jacket formed from the one of the polyvinyl chloride or the low smoke zero halogen material, and a plurality of second strength members disposed between the outer jacket and the central inner jacket. A fiber density of the cable is greater than 0.65 fibers per square millimeter.

An optical fiber cable includes a plurality of optical fibers arranged in juxtaposition with one another, and a plurality of adhesive materials spaced-apart disposed on the optical fibers. Each of the adhesive materials binds adjacent ones of the optical fibers to one another in a number that is smaller than a total number of the optical fibers. A method for manufacturing the optical fiber cable includes arranging the optical fibers in juxtaposition with one another, and applying the adhesive materials to the optical fibers in a spaced-apart manner, such that each of the adhesive materials binds adjacent ones of the optical fibers.

An optical fiber cable includes: optical fiber units obtained by collecting a plurality of optical fiber ribbons in which a plurality of optical fibers are arranged in parallel; and a slot rod including a plurality of slot grooves formed in a spiral shape in order to store the optical fiber units. The optical fiber units are stranded in a longitudinal direction of the optical fiber cable in a state in which the optical fiber ribbons are not twisted, and the optical fiber units are stored in the longitudinal direction of the optical fiber cable in a state of being untwisted stranding in the slot grooves.