US 12,242,115 B2
Cable with connector
Tetsuya Nakanishi, Osaka (JP); and Takayuki Shimazu, Osaka (JP)
Assigned to SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Filed by SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Filed on Dec. 23, 2021, as Appl. No. 17/560,958.
Claims priority of application No. 2020-217223 (JP), filed on Dec. 25, 2020.
Prior Publication US 2022/0206229 A1, Jun. 30, 2022
Int. Cl. G02B 6/38 (2006.01); G02B 6/44 (2006.01)
CPC G02B 6/3885 (2013.01) [G02B 6/3897 (2013.01); G02B 6/443 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A cable with a connector, comprising:
a plurality of multicore optical fibers;
a plurality of multi-fiber connectors attached to ends of the plurality of multicore optical fibers, and
a sheath that collectively covers the plurality of multicore optical fibers,
wherein the plurality of multicore optical fibers includes a first multicore optical fiber, a second multicore optical fiber, and a third multicore optical fiber,
the plurality of multi-fiber connectors includes a first optical connector attached to one end of the first multicore optical fiber, a second optical connector attached to one end of the second multicore optical fiber, and a third optical connector attached to one end of the third multicore optical fiber,
a length of the first connector and a length of the first multicore optical fiber from one end of the sheath to the first connector combined are shorter than a length of the second multicore optical fiber from the one end of the sheath to the second connector,
a core number density of each of the plurality of multi-fiber connectors is 2 cores/mm2 or more, the core number density of each of the plurality of multi-fiber connectors is defined as a total number of cores in multicore optical fibers of the plurality of multicore optical fibers that a multi-fiber connector of the plurality of multi-fiber connectors is attached to at one end, divided by a cross-sectional area, where the cross-sectional area is an area of the multi-fiber connector perpendicular to the multicore optical fibers of the plurality of multicore optical fibers included in the multi-fiber connector of the plurality of multi-fiber connectors,
a length of the second connector and the length of the second multicore optical fiber from the one end of the sheath to the second connector combined are shorter than a length of the third multicore optical fiber from the one end of the sheath to the third connector, and
the plurality of multi-fiber connectors are arranged at regular intervals in a longitudinal direction of the cable.