Optical fiber composite ground wire and method using steel tube
First Claim
Patent Images
1. An optical fiber composite ground wire (OPGW), comprising:
- a central wire disposed at a center of said optical fiber composite ground wire (OPGW);
a steel tube disposed radially outward from said central wire and disposed radially outward from said center of said optical fiber composite ground wire (OPGW), said steel tube having a central aperture;
an optical fiber ribbon disposed in said central aperture of said steel tube, said optical fiber ribbon including a plurality of optical fibers arranged in a coplanar alignment within said optical fiber ribbon, said plurality of optical fibers each respectively forming a communication line in said optical fiber composite ground wire (OPGW);
a filling material disposed about said optical fiber ribbon in said central aperture of said steel tube;
an inner layer wire disposed radially outward from said central wire and disposed radially outward from said center of said optical fiber composite ground wire (OPGW); and
an outer layer wire disposed outward from said steel tube and from said inner layer wire and disposed radially outward from said center of said optical fiber composite ground wire (OPGW), said outer layer wire forming a ground wire in said optical fiber composite ground wire (OPGW).
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Abstract
There is provided an optical fiber composite ground wire (OPGW). The optical fiber composite ground wire (OPGW) includes a central wire at the center of the optical fiber composite ground wire (OPGW), a steel tube disposed around the central wire, at least one optical fiber ribbon inserted into the steel tube and containing a plurality of optical fibers arranged in coplanar alignment, a filling material filled in the steel tube, at least one inner layer wire surrounding the central wire, and at least one outer layer wire surrounding the steel tube and the inner layer wire.
51 Citations
38 Claims
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1. An optical fiber composite ground wire (OPGW), comprising:
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a central wire disposed at a center of said optical fiber composite ground wire (OPGW);
a steel tube disposed radially outward from said central wire and disposed radially outward from said center of said optical fiber composite ground wire (OPGW), said steel tube having a central aperture;
an optical fiber ribbon disposed in said central aperture of said steel tube, said optical fiber ribbon including a plurality of optical fibers arranged in a coplanar alignment within said optical fiber ribbon, said plurality of optical fibers each respectively forming a communication line in said optical fiber composite ground wire (OPGW);
a filling material disposed about said optical fiber ribbon in said central aperture of said steel tube;
an inner layer wire disposed radially outward from said central wire and disposed radially outward from said center of said optical fiber composite ground wire (OPGW); and
an outer layer wire disposed outward from said steel tube and from said inner layer wire and disposed radially outward from said center of said optical fiber composite ground wire (OPGW), said outer layer wire forming a ground wire in said optical fiber composite ground wire (OPGW). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
said optical fiber ribbon comprising a plurality of acryl-coated optical fibers in said coplanar alignment, said plurality of acryl-coated optical fibers being uniformly coated with a resin on an outer surface of each of said plurality of acryl-coated optical fibers and cured with ultra violet (UV) light; and
said optical fiber ribbon inserted into said central aperture of said steel tube having a fiber excess length of 0.1 to 0.3%.
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10. The optical fiber composite ground wire (OPGW) of claim 1, further comprised of:
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said optical fiber ribbon comprising a plurality of acryl-coated optical fibers in said coplanar alignment, said plurality of acryl-coated optical fibers being uniformly coated with a resin on an outer surface of each of said plurality of acryl-coapted optical fibers and cured with ultra violet (UV) light;
said steel tube being coated with an aluminum layer to prevent corrosion generated when said steel tube is in contact with said outer layer wire; and
said central wire and said outer layer wire each comprising one of an aluminum-coated steel wire and an aluminum wire.
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11. The optical fiber composite ground wire (OPGW) of claim 10, further comprised of said filling material comprising a jelly of a resin material.
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12. The optical fiber composite ground wire (OPGW) of claim 1, further comprised of:
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said steel tube being coated with an aluminum layer to prevent corrosion generated when said steel tube is in contact with said outer layer wire; and
said central wire and said outer layer wire each comprising one of an aluminum-coated steel wire and an aluminum wire.
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13. The optical fiber composite ground wire (OPGW) of claim 12, further comprised of said inner layer wire and said outer layer wire being respectively spliced in opposite directions to prevent rotation of said inner layer wire and said outer layer wire during installation of said optical fiber composite ground wire (OPGW).
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14. The optical fiber composite ground wire (OPGW) of claim 12, further comprised of said outer layer wire having an excess length larger than that of said inner layer wire.
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15. The optical fiber composite ground wire (OPGW) of claim 1, further comprised of a plurality of optical fiber ribbons disposed in said central aperture of said steel tube, each said optical fiber ribbon of said plurality of optical fiber ribbons including said plurality of optical fibers arranged in said coplanar alignment within a respective said optical fiber ribbon.
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16. The optical fiber composite ground wire (OPGW) of claim 15, further comprised of said plurality of optical fiber ribbons being arranged in a stacked, parallel relation in said central aperture of said steel tube.
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17. The optical fiber composite ground wire (OPGW) of claim 16, further comprised of said plurality of optical fibers in each said optical fiber ribbon in said plurality of optical fiber ribbons being in a range of from 2 to 8 in number.
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18. The optical fiber composite ground wire (OPGW) of claim 15, further comprised of a plurality of inner layer wires, each said inner layer wire of said plurality of inner layer wires being disposed radially outward from said central wire and disposed radially outward from said center of said optical fiber composite ground wire (OPGW), and further comprised of a plurality of outer layer wires, each said outer layer wire of said plurality of outer layer wires being disposed outward from said steel tube and from said plurality of inner layer wires and disposed radially outward from said center of said optical fiber composite ground wire (OPGW), said plurality of outer layer wires each forming a ground wire in said optical fiber composite ground wire (OPGW).
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19. The optical fiber composite ground wire (OPGW) of claim 18, further comprised of said steel tube being coated within an aluminum layer to prevent corrosion when said steel tube is in contact with any of said plurality of outer layer wires, and further comprised of each of said central wire and said plurality of outer layer wires comprising one of an aluminum-coated steel wire and an aluminum wire.
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20. The optical fiber composite ground wire (OPGW) of claim 18, further comprised of said plurality of inner layer wires and said plurality of outer layer wires being respectively spliced in opposite directions to prevent rotation of said plurality of inner layer wires and said plurality of outer layer wires during installation of said optical fiber composite ground wire (OPGW).
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21. The optical fiber composite ground wire (OPGW) as claimed in claim 18, further comprised of said plurality of outer layer wires each having an excess length larger than that of each of said plurality of inner layer wires.
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22. The optical fiber composite ground wire (OPGW) as claimed in claim 18, further comprised of each of said plurality of optical fiber ribbons comprising a plurality of acryl-coated optical fibers in said coplanar alignment, said plurality of acryl-coated optical fibers being uniformly coated with a resin on an outer surface of each said plurality of acryl-coated optical fibers and cured with ultra violet (UV) light.
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23. The optical fiber composite ground wire (OPGW) as claimed in claim 15, further comprised of each of said plurality of optical fiber ribbons comprising a plurality of acryl-coated optical fibers in said coplanar alignment, said plurality of acryl-coated optical fibers being uniformly coated with a resin on an outer surface of each said plurality of acryl-coated optical fibers and cured with ultra violet (UV) light.
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24. The optical fiber composite ground wire (OPGW) as claimed in claim 23, further comprised of each of said plurality of optical fiber ribbons inserted into said central aperture of said steel tube having a fiber excess length of 0.1% to 0.3%.
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25. The optical fiber composite ground wire (OPGW) as claimed in claim 24, further comprised of said filling material comprising a jelly of a resin material.
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26. The optical fiber composite ground wire (OPGW) as claimed in claim 1, further comprised of said plurality of optical fibers in said optical fiber ribbon being in a range of from 2 to 8 in number.
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27. A method of forming an optical fiber composite ground wire (OPGW), comprising the steps of:
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disposing a central wire at a center of said optical fiber composite ground wire (OPGW);
disposing a steel tube radially outward from said central wire and radially outward from said center of said optical fiber composite ground wire (OPGW), and providing a central aperture in said steel tube;
disposing an optical fiber ribbon is said central aperture of said steel tube, and arranging a plurality of optical fibers in a coplanar alignment within said optical fiber ribbon, said plurality of optical fibers each respectively forming a communication line in said optical fiber composite ground wire (OPGW);
disposing a filling material about said optical fiber ribbon in said central aperture of said steel tube;
disposing an inner layer wire radially outward from said central wire and radially outward from said center of said optical fiber composite ground wire (OPGW); and
disposing an outer layer wire outward from said steel tube and from said inner layer wire and radially outward from said center of said optical fiber composite ground wire (OPGW), said outer layer wire forming a ground wire in said optical fiber composite ground wire (OPGW). - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36)
coating said steel tube with an aluminum layer to prevent corrosion generated when said steel tube is in contact with said outer layer wire;
forming each of said central wire and said outer layer wire of one of an aluminum-coated steel wire and an aluminum wire; and
providing a jelly of a resin material as said filling material.
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37. An optical fiber composite ground wire (OPGW), comprising:
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a central wire disposed at a center of said optical fiber composite ground wire (OPGW);
a tube disposed radially outward from said central wire and disposed radially outward from said center of said optical fiber composite ground wire (OPGW), said tube having a central aperture, said tube being comprised of a metal material resistant to oxidation and to corrosion;
an optical fiber ribbon disposed in said central aperture of said tube, said optical fiber ribbon including a plurality of optical fibers arranged in a coplanar alignment within said optical fiber ribbon, said plurality of optical fibers each respectively forming a communication line in said optical fiber composite ground wire (OPGW);
a filling material disposed about said optical fiber ribbon in said central aperture of said tube;
an inner layer wire disposed radially outward from said central wire and disposed radially outward from said center of said optical fiber composite ground wire (OPGW); and
an outer layer wire disposed outward from said tube and from said inner layer wire and disposed radially outward from said center of said optical fiber composite ground wire (OPGW), said outer layer wire forming a ground wire in said optical fiber composite ground wire (OPGW).
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38. A method of forming an optical fiber composite ground wire (OPGW), comprising the steps of:
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disposing a central wire at a center of said optical fiber composite ground wire (OPGW);
disposing a tube radially outward from said central wire and radially outward from said center of said optical fiber composite ground wire (OPGW), and providing a central aperture in said tube, said tube being comprised of a metal material resistant to oxidation and to corrosion;
disposing an optical fiber ribbon is said central aperture of said steel tube, and arranging a plurality of optical fibers in a coplanar alignment within said optical fiber ribbon, said plurality of optical fibers each respectively forming a communication line in said optical fiber composite ground wire (OPGW);
disposing a filling material about said optical fiber ribbon in said central aperture of said tube;
disposing an inner layer wire radially outward from said central wire and radially outward from said center of said optical fiber composite ground wire (OPGW); and
disposing an outer layer wire outward from said tube and from said inner layer wire and radially outward from said center of said optical fiber composite ground wire (OPGW), said outer layer wire forming a ground wire in said optical fiber composite ground wire (OPGW).
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Specification