US 12,092,859 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. 17/757,960
Filed by Fujikura Ltd., Tokyo (JP)
PCT Filed Dec. 16, 2020, PCT No. PCT/JP2020/046999
§ 371(c)(1), (2) Date Jun. 24, 2022,
PCT Pub. No. WO2021/131977, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 2019-237525 (JP), filed on Dec. 26, 2019.
Prior Publication US 2023/0017442 A1, Jan. 19, 2023
Int. Cl. G02B 6/02 (2006.01); G02B 6/38 (2006.01); G02B 6/44 (2006.01)
CPC G02B 6/02042 (2013.01) [G02B 6/3885 (2013.01); G02B 6/3833 (2013.01); G02B 6/4433 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A multicore fiber comprising:
a cladding; and
four or five cores disposed at rotationally asymmetric positions on a circumference centered at a center of the cladding, wherein
no core is disposed at the center of the cladding,
angles formed by adjacent ones of lines connecting the center of the cladding and respective ones of the cores are all larger than 60°,
the angles are all different, and
a narrowest angle of the angles is not adjacent to a second narrowest angle of the angles.