Optical cable
AssigneeSumitomo Electric Industries, Ltd.
InventorsItaru Sakabe, Yuya Homma, Tomoyuki Hattori, Kazuyuki Sohma
Life of this patent
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Abstract
In an optical cable 1, the ratio of the inner diameter ID to the outer diameter OD of a tube 20 is 0.5 or less, and thus the tube 20 has a comparatively thick wall. Consequently, even when the optical cable 1 is bent to a small bend radius of, for example, approximately 2 mm, a kink in a portion of the tube 20 corresponding to the inner side of the bending is suppressed. As a result, damage to a coated optical fiber 10 or an increase in transmission loss arising from the occurrence of a kink in the tube 20 is suppressed.
Claims13
An optical cable including a coated optical fiber, said optical cable comprising a tube accommodating said coated optical fiber enabled to move freely, wherein a ratio of an inner diameter of said tube to an outer diameter of said tube is 0.1 or greater and 0.5 or less.
An optical cable including a coated optical fiber, said optical cable comprising:
- a tube accommodating said coated optical fiber enabled to move freely;
- and
- a jacket covering said tube,
- wherein said tube and said jacket being in mutual close contact;
- and
- wherein a ratio of an inner diameter of said tube to an outer diameter of said jacket is 0.1 or greater and 0.5 or less.
An optical cable accommodating an optical fiber,
- wherein when said optical cable is enclosed in a U-shape between two plates and then an interval therebetween is reduced while applying a load at a constant velocity, a yield point occurs when a distance between said two plates is equal to or less than three times an outer diameter of the optical cable.
Dependencies are inferred from the claim text.