Patent ID: 11906783
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. The core position recognition method according to claim 1,
wherein, when an arrangement of cores of the multi-core fiber is a hexagonal close-packed arrangement, the lines are drawn at 60° intervals, as viewed from a cross section of the multi-core fiber at the end, the number of the lines being 6,
when the arrangement is a tetragonal lattice arrangement, the lines are drawn at 90° intervals, as viewed from the cross section of the multi-core fiber at the end, the number of the lines being 4, and
when the arrangement is a single-layer annular arrangement, the lines are drawn at equal intervals, as viewed from the cross section of the multi-core fiber at the end, the number of the lines being a number that is a minimum value of 4 or more and is a divisor of the number of the cores.