| 摘要 |
In the present invention, multi-core fibres (1) are optical fibres which each have a circular cross section. In each of the multi-core fibres (1), a plurality of cores (5) are arranged at a prescribed interval, the peripheries thereof are covered by a cladding (3), and a resin coating (7) is formed on the outer periphery of the cladding (3). In a cross section of this optical fibre ribbon (10), said cross section being orthogonal to the length direction, the multi-core fibres (1) are arranged such that the cores (5) of all of the multi-core fibres (1) are all arranged in the same direction. The multi-core fibres (1) are arranged such that central lines of the respective multi-core fibres (1), said central lines respectively linking three of the cores (5), all face the thickness direction of the optical fibre ribbon (10). Furthermore, in the optical fibre ribbon (10), the arrangement of the cores (5) is substantially constant along the entire length of the optical fibre ribbon (10) in the length direction. In other words, in any arbitrary cross section in the length direction of the optical fibre ribbon (10), the arrangement of the cores (5) is always substantially constant. |
