FIBER BRANCHING PART FOR MULTIPLE COATED OPTICAL FIBERS

摘要

PURPOSE:To branch the multiple coated optical fibers with a stable light loss while keeping the coated fiber free from undue stresses by providing a branch part protective body integrated with a perforated member having plural insertion holes on the same circumference and an approximately spindle shaped protective body positioned on the same axis between the end of the multiple coated optical fibers and a single fiber protective tube. CONSTITUTION:The branch part protective body 10 integrated with the perforated member 12 having the plural insertion holes on the same circumference and the approximately bobbin- shaped protective body 11 positioned on the same axis is disposed between the end of the multiple coated optical fiber 1 and the single fiber protective tube. The single-fiber coated optical fiber 2 branched from the multiple coated optical fibers 1 are inserted along the outside surface of the spindle shaped protective body 11 through the insertion holes of the perforated member 12 into the single fiber protective tube 15. The branched single-fiber coated optical fiber 2 are, therefore, kept free from the undue bending forces, etc. The single- fiber coated optical fiber 2 and the spindle shaped protective body 11 are fixed by a resin 20, etc., by which the stabler branching part of the lessened light loss is obtd. The plural longitudinal grooves are provided on the outside surface of the spindle shaped protective body 11 and the branched single-fiber coated optical fiber 2 are housed into the grooves at this time. The stable branching part of the lessened light loss is obtd. in this way.