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US 2013/0170804 A1Published application
Multi-core optical fiber
AssigneeSumitomo Electric Industries, Ltd.
InventorTetsuya HAYASHI
Life of this patent
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Abstract
The present invention relates to a multi-core optical fiber that can realize suppression of crosstalk on an easy and inexpensive basis. The multi-core optical fiber is provided with a plurality of core portions extending along a central axis of the fiber, a common cladding portion integrally holding the core portions inside, a coating layer surrounding the common cladding portion, and a bend applying portion. The bend applying portion, as an example, is provided on a partial region of an outer periphery of the coating layer and applies bending stress to a glass region.
Claims13
A multi-core optical fiber comprising:
- a plurality of core portions extending along a central axis of the fiber;
- a common cladding portion integrally holding the core portions inside in a state in which the core portions are separated at predetermined intervals from each other, the common cladding portion having a refractive index lower than that of each of the core portions;
- a coating layer surrounding an outer periphery of the common cladding portion;
- and
- a bend applying portion provided at least either on an outer periphery of the coating layer or in the interior of the coating layer, the bend applying portion applying bending stress to a glass region including the core portions and the common cladding portion.
2 more elements
Dependencies are inferred from the claim text.