US 12,292,613 B2
Optical cable and optical-cable manufacturing method
Hironori Sato, Sakura (JP); Akira Namazue, Sakura (JP); and Ken Osato, Sakura (JP)
Assigned to Fujikura Ltd., Tokyo (JP)
Appl. No. 18/013,324
Filed by FUJIKURA LTD., Tokyo (JP)
PCT Filed Jun. 15, 2021, PCT No. PCT/JP2021/022747
§ 371(c)(1), (2) Date Dec. 28, 2022,
PCT Pub. No. WO2022/004362, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 2020-114332 (JP), filed on Jul. 1, 2020.
Prior Publication US 2023/0251450 A1, Aug. 10, 2023
Int. Cl. G02B 6/44 (2006.01)
CPC G02B 6/448 (2013.01) 14 Claims
OG exemplary drawing
 
1. An optical cable, comprising
optical fiber units each of which comprises intermittently-coupled optical fiber ribbons that are in an irregularly-stacked state, wherein
in at least one of the optical fiber units, in a cross section perpendicular to a longitudinal direction of the at least one of the optical fiber units, a length of a vector GU is shorter than a largest length of vectors MG of the intermittently-coupled optical fiber ribbons forming the at least one of the optical fiber units,
where,
in each of the intermittently-coupled optical fiber ribbons,
each of the vectors MG is a vector starting from M and ending at G,
M is a midpoint between optical fibers at both ends of the each of the intermittently-coupled optical fiber ribbons, and
G is a center of gravity of the each of the intermittently-coupled optical fiber ribbons, and
the vector GU is a resultant vector of the vectors MG.