Multicore fiber for communication
AssigneesNational University Corporation Hokkaido University, Fujikura Ltd.
InventorsKatsuhiro Takenaga, Shoichiro Matsuo, Yusuke Sasaki, Kunimasa Saitoh
Life of this patent
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Abstract
A multicore fiber for communication 10 which allows propagation of an optical signal includes: a clad 12; a core 11a which is arranged in a center of the clad 12; and seven to ten cores 11b which are arranged at equal intervals surrounding the core 11a, and the cladding diameter is 230 μm, distances between centers of the mutually neighboring cores 11a and 11b are 30 μm or more, distances between the centers of the cores 11b and an outer peripheral surface of the clad 12 are 35 μm or more and a mode field diameter of light propagating in the cores 11a and 11b is 9 μm to 13 μm.
Claims18
A multicore fiber for communication comprising:
- a clad;
- a core which is arranged in a center of the clad;
- and
- seven to twelve cores which are each arranged at equal distances from the center and at equal intervals surrounding the core,
- wherein an cladding diameter is 230 μm or less.
A multicore fiber for communication comprising:
- a clad;
- three cores which are each arranged at equal distances from a center of the clad and at equal intervals;
- and
- five to twelve cores which are each arranged at equal distances from the center and at equal intervals surrounding the three cores,
- wherein an cladding diameter is 230 μm or less.
A multicore fiber for communication comprising:
- a clad;
- a core which is arranged in a center of the clad;
- six cores which are each arranged at equal distances from the center and at equal intervals surrounding the core;
- and
- one to six cores which are arranged between a connection line which connects two mutually neighboring cores of the six cores and the core, and on the line which is vertical to the connection line and passes on the core,
- wherein an cladding diameter is 230 μm or less.
A multicore fiber for communication comprising:
- a clad;
- a core which is arranged in a center of the clad;
- and
- eight cores which surround the core and are arranged at equal intervals to form a square shape as a whole,
- wherein an cladding diameter is 230 μm or less.
A multicore fiber for communication comprising:
- a clad;
- four cores which are each arranged at equal distances from a center of the clad and at equal intervals;
- and
- eight cores which are arranged on an extended line which connects two mutually neighboring cores of the four cores, and which are arranged such that a distance to a center of a closest core of the four cores is equal to distances between centers of the two mutually neighboring cores of the four cores,
- wherein an cladding diameter is 230 μm or less.
Dependencies are inferred from the claim text.