Abstract: There is provided a ferrule which has a fiber fixed hole into which an optical fiber can be inserted easily without being broken and which can provide a sufficient fiber bonding strength, and which can restrain variations in connection loss caused by the temperature variations. A ferrule 10 is provided with two alignment pin holes 10a into which alignment pins for positioning with respect to a mating ferrule are inserted, and a plurality of fiber fixed holes H formed at predetermined intervals between the alignment pin holes to insert optical fibers. Each of the fiber fixed holes H has at least a fiber guide hole 10d for guiding the optical fiber, a fiber hole 10c connected with the fiber guide hole to accommodate the tip end of the optical fiber, and a fiber insertion hole 10e connected with the fiber guide hole 10d to introduce the optical fiber into the ferrule. A connecting portion of the fiber guide hole 10d and the fiber insertion hole 10e is formed into a taper shape.

Abstract: An optical fiber assembly kit (7) comprising: (a) a ferrule assembly (1) having at least one bore hole to receive an optical fiber and a first contact surface; (b) a positioning member (2) having a second contact surface and an aperture adapted to receive the ferrule assembly (1), wherein the first contact surface and the aperture are configured to form a first interface in which a first radial position relationship between the ferrule assembly (1) and the positioning member (2) is maintained; (c) a housing having an interior cavity adapted for receiving the positioning member (2) and the ferrule assembly (1), the housing and the second surface of the positioning member (2) are configured to form a second interface such that a second radial position relationship between the positioning member (2) and the housing is maintained, wherein one of the first or second radial position relationships is adjustable in increments less than a quarter rotation, and the other radial position relationship is predetermined, a

Abstract: [Object] There is provided a ferrule which has a fiber fixed hole into which an optical fiber can be inserted easily without being broken and which can provide a sufficient fiber bonding strength, and which can restrain variations in connection loss caused by the temperature variations.

Abstract: An optical fiber assembly kit (7) comprising: (a) a ferrule assembly (1) having at least one bore hole to receive an optical fiber and a first contact surface; (b) a positioning member (2) having a second contact surface and an aperture adapted to receive the ferrule assembly (1), wherein the first contact surface and the aperture are configured to form a first interface in which a first radial position relationship between the ferrule assembly (1) and the positioning member (2) is maintained; (c) a housing having an interior cavity adapted for receiving the positioning member (2) and the ferrule assembly (1), the housing and the second surface of the positioning member (2) are configured to form a second interface such that a second radial position relationship between the positioning member (2) and the housing is maintained, wherein one of the first or second radial position relationships is adjustable in increments less than a quarter rotation, and the other radial position relationship is predetermined, a

Abstract: In a prior art multiple-fiber optical connector, it was difficult to easily and securely insert and mount a plurality of optical fibers led out from the multiple-fiber optical fiber ribbon. Further, in such a prior art multiple-fiber optical connector, it was possible to prevent a transmission loss from being generated due to local deformation of optical fibers, which is produced in mounting optical fibers, and a connection loss from being generated due to hardening and contraction of an adhesive agent, which are in the final assembling process. In order to solve such problems, a structure of an optical connector was designed as shown below; That is, a tapered portion (3) is provided in a fiber ribbon insertion hole (2) in order to narrow the width thereof, and the tip end (33) of a sheathed portion of a multiple-fiber optical fiber ribbon (31) is engaged in and stopped in the intermediate portion (8) of the tapered portion (3), whereby the insertion position is determined.