TERMINATION UNIT AND OPTICAL FIBER EXCHANGE METHOD USING THE SAME

• US 20190064468A1
• Filed: 08/22/2018
• Published: 02/28/2019
• Est. Priority Date: 08/23/2017
• Status: Active Grant

• Current Assignee: SEI Optifrontier Co., Ltd., Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Original Assignee: SEI Optifrontier Co., Ltd., Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Inventors: YAMAUCHI, Takayasu, UEDA, Tomohiko, FUKUI, Junji, YOKOMACHI, Yukihiro, YOKOKAWA, Tomoyuki, YOKOCHI, Takayuki, YAMANAKA, Masanori
• Granted Patent: US 10,591,693 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 6/3825 with an intermediate part, e.g. adapter, receptacle, linking two plugs
• CPC Class Codes: G02B 6/4452 Distribution frames
• CPC Class Codes: G02B 6/4454 with splices
• CPC Class Codes: G02B 6/4471 Terminating devices demountable connectors G02B6/3807; Cable clamps
• CPC Class Codes: H02G 3/0608 Joints for connecting non cylindrical conduits, e.g. channels

Abstract

A termination unit located on a rack part of an optical fiber rack includes a housing 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 housing and the adapter group in an arrangement direction.

Claims

1. A termination unit to be located on a rack part of an optical fiber rack, the termination unit comprising:

a housing;

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 housing and the adapter group in an arrangement direction of the plurality of adapters.

2. The termination unit according to claim 1, further comprising a second optical fiber passing part through which at least one optical fiber is configured to pass,

wherein the adapter group is interposed between the optical fiber passing part and the second optical fiber passing part in the arrangement direction.

3. The termination unit according to claim 1, further comprising a second optical fiber passing part through which at least one optical fiber is configured to pass,

wherein the optical fiber passing part is located between the housing and the adapter group in the arrangement direction, and

wherein the second optical fiber passing part is located in the adapter group.

4. The termination unit according to claim 1, further comprising a cover sheet configured to cover an optical fiber part of the plurality of first optical fibers in the housing.

5. An optical fiber exchange method using the termination unit according to claim 1, comprising:

cutting a third optical fiber in the multi fiber cable connected to one of the plurality of first optical fibers outside the optical fiber rack;

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 the adapter after extracting the first optical fiber to be disconnected from the adapter.