Patent ID: 9250384
Filing Date: 2016-02-02
CPC Classification: G02B

Claim Text:
1. A multicore fiber comprising a first multicore fiber member and a second multicore fiber member, one end face of the first multicore fiber member being spliced to one end face of the second multicore fiber member, wherein core end faces of multiple cores in the first multicore fiber member are spliced one-to-one to core end faces of multiple cores in the second multicore fiber member, and among the cores in the first multicore fiber member and the cores in the second multicore fiber member spliced one-to-one at the core end faces, at least one core in the first multicore fiber member and one core in the second multicore fiber member spliced thereto have different effective core areas from each other, and the core having the larger effective core area has an open end face located opposite to the spliced core end face thereof, the open end face receiving light such that the light propagates through the core having the larger effective core area to enter the corresponding core, and wherein a difference in the effective core area difference between a core in the first multicore fiber member and a core in the second multicore fiber member is 45 μm