Termination unit and optical fiber exchange method using the same

An optical fiber exchange method using a termination unit to be located on a rack part of an optical fiber rack, the termination unit comprising:

• a housing including a first side wall, a second side wall and a rear wall;
• a plurality of first optical fibers located in the housing, the plurality of first optical fibers being fusion spliced to a multi fiber cable introduced from an outside of the optical fiber rack;
• an adapter group including a plurality of adapters in a line in the housing, the plurality of adapters being respectively connected to the plurality of first optical fibers on an inside of the housing and being respectively connected to a plurality of second optical fibers on an outside of the housing;
• and
• an optical fiber passing part through which at least one optical fiber is configured to pass, the optical fiber passing part being located in at least one of:
• the adapter group;
• and between the first side wall of the housing and the adapter group in an arrangement direction of the plurality of adapters, wherein the arrangement direction corresponds to a direction in which the first side wall and the second side wall face each other, the optical fiber exchange method comprising:
• cutting a third optical fiber in the multi fiber cable outside the optical fiber rack, the third optical fiber being connected to one of the plurality of first optical fibers;
• fusion splicing a cut face of the cut third optical fiber to an exchange optical fiber;
• housing a tip part of the exchange optical fiber in the housing via the optical fiber passing part;
• and
• inserting the tip part of the exchange optical fiber into one of the plurality of adapters after extracting the first optical fiber to be disconnected from the one of the plurality of adapters.