Optical fiber cable
AssigneeSumitomo Electric Industries, Ltd.
InventorsFumiaki Sato, Kuushin Ryan, Taro Fujita, Nayu Yanagawa, Ryota Fukumoto, Masakazu Takami, Yohei Suzuki
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Abstract
An optical fiber cable includes a plurality of intermittently connected optical fiber ribbons inside a cable sheath, in which a fibrous filler or an FRP using the fibrous filler is provided on at least one pair of diagonals of the two diagonal directions approximately orthogonal to each other inside the cable sheath. An average linear expansion coefficient of the fibrous filler at −40° C. to +70° C. is smaller than an average linear expansion coefficient of the cable sheath at −40° C. to +70° C.
Claims13
An optical fiber cable comprising:
- a cable core;
- a cable sheath placed around an outside of the cable core;
- a plurality of intermittently connected optical fiber ribbons inside the cable core;
- and
- a plurality of pairs of fillers in two diagonal directions orthogonal to each other in a cross-sectional view of the cable sheath,
- wherein a fibrous filler or an FRP using the fibrous filler is arranged on at least one pair of diagonals of the fillers,
- wherein an average linear expansion coefficient of the fibrous filler at −40° C. to +70° C. is smaller than an average linear expansion coefficient of the cable sheath at −40° C. to +70° C. and
- wherein ES product obtained by multiplying Young's modulus E of the cable sheath by a cross-sectional area S of the cable sheath is 12.9 to 141 kN.
Dependencies are inferred from the claim text.