US 12,092,879 B2
Multicore fiber, optical fiber cable, and optical connector
Katsuhiro Takenaga, Chiba (JP); Yusuke Sasaki, Chiba (JP); and Masaki Ohzeki, Chiba (JP)
Assigned to Fujikura Ltd., Tokyo (JP)
Appl. No. 17/788,848
Filed by Fujikura Ltd., Tokyo (JP)
PCT Filed Dec. 16, 2020, PCT No. PCT/JP2020/046997
§ 371(c)(1), (2) Date Jun. 24, 2022,
PCT Pub. No. WO2021/131976, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 2019-237524 (JP), filed on Dec. 26, 2019.
Prior Publication US 2023/0036200 A1, Feb. 2, 2023
Int. Cl. G02B 6/38 (2006.01); G02B 6/02 (2006.01); G02B 6/44 (2006.01)
CPC G02B 6/3885 (2013.01) [G02B 6/02042 (2013.01); G02B 6/4429 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A multicore fiber comprising:
a cladding;
a center core at a center of the cladding; and
seven or more outer cores disposed at rotationally asymmetric positions on a circumference centered at the center of the cladding, wherein
angles formed by adjacent ones of lines connecting the center core and respective ones of the outer cores are all 60° or less,
the angles are all different, and
a narrowest angle of the angles is not adjacent to a second narrowest angle of the angles.