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US 11,422,301 B2Granted
Optical fiber cable
AssigneeNippon Telegraph and Telephone Corporation
InventorsYusuke Yamada, Masashi Kikuchi, Hisashi Izumita, Junichi Kawataka, Kazunori Katayama
Life of this patent
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Abstract
An optical fiber cable 100 includes at least one optical fiber core 140 and a sheath containing the optical fiber core. The optical fiber core 140 includes optical fibers 130. A total length of the optical fiber core 140 is longer than that of the sheath 160. The optical fiber core 140 is contained in the sheath 160 so that bending occurs in the optical fibers 130.
Claims8
An optical fiber cable comprising:
- at least one optical fiber core including a plurality of optical fibers;
- a sheath containing the optical fiber core,
- a total length of the optical fiber core being longer than that of the sheath, the optical fiber core being contained in the sheath so that bending occurs in the optical fibers;
- and
- a bundle member spirally wound around an outer periphery of the optical fiber core, wherein the optical fiber core is bundled in a substantially circular shape in a cross section orthogonal to a cable axis, and wherein a spiral radius of the bundle member is smaller than a radius of a substantially circumscribed circle of the optical fiber core.
2 more elements
Dependencies are inferred from the claim text.