MULTICORE OPTICAL FIBER CONNECTOR AND ASSMBLING METHOD THEREFOR

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. In addition, in order to guide the led out optical fiber (32) continuously from the tapered portion (3), a conical introducing portion (4) having an adequate diameter is provided, and it becomes possible to collectively insert a plurality of optical fibers securely into appointed minute holes for inserting optical fibers. Furthermore, no insertion window for an adhesive agent is necessary.