METHOD FOR PRODUCING BUNDLE STRUCTURE, METHOD FOR CONNECTING FIBERS, BUNDLE TERMINAL STRUCTURE, AND FIBER CONNECTION STRUCTURE

摘要

A multicore fiber 3 has a plurality of cores 11 formed at predetermined distances and surrounded by a cladding 13. A bundle structure 5 includes optical fibers 7 joined in a close-packed arrangement. Specifically, one optical fiber 7 is arranged at a center, and six optical fibers 7 are arranged around the optical fiber 7 arranged at the center. Accordingly, cores 15 of the optical fibers 7 are arranged at equal distances. The optical fibers 7 are bonded together with an adhesive 19a. Accordingly, claddings 17 of adjacent optical fibers 7 are in contact with each other either directly or via the adhesive 19a. The adhesive 19a also fills spaces between the optical fibers 7.