OPTICAL FIBER CONNECTING STRUCTURE

An optical fiber connecting structure (50) includes a first connector (10) for a terminal of an optical fiber and a second connector (20) on an optical signal receiver side. The first connector (10) include a plurality of ferrule holding members (12, 13) each holding a ferrule (11) and being unitable with each other. The second connector (20) includes an interface housing (21) with a cavity (22) for insertion of the first connector (10), the interface housing (21) in which a plurality of ferrule receivers for insertion of the ferrules are disposed. The interface housing (21) includes a ferrule guide (24) configured to guide each of the ferrules (11) to a proper insertion position upon insertion of the first connector (10) into the cavity (22).