| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure for easily obtain connection efficiency in the connecting part of an optical fiber in a ferrule used for a connector for optical communication which connects a plurality of optical fibers at the same time and efficiently and can inexpensively change the connection of the optical fiber. SOLUTION: The ferrule 10 has one through-hole 20 at the center of a cylindrical body and insertion holes 21 for a plurality of optical fibers around the through-hole. Each insertion hole 21 exists on a concentric circle and at an equal distance from the central through-hole 20.
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