Micromodule Cables and Breakout Cables Therefor
First Claim
Patent Images
1. A breakout cable, comprising:
- a polymer jacket; and
a plurality of micromodules enclosed within the jacket, each micromodule having a plurality of optical waveguides and a polymer sheath comprising PVC surrounding the waveguides, the polymer sheath having a thickness in the range of 0.2 mm to 0.3 mm.
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Abstract
Micromodule breakout cables are constructed to pass selected burn tests while maintaining a desired degree of accessibility and durability. The micromodule cables can be incorporated in data centers and are robust enough to serve as furcation legs while allowing hand accessibility. The cables can incorporate optical fibers with low delta attenuation and can have low skew.
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Citations
21 Claims
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1. A breakout cable, comprising:
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a polymer jacket; and a plurality of micromodules enclosed within the jacket, each micromodule having a plurality of optical waveguides and a polymer sheath comprising PVC surrounding the waveguides, the polymer sheath having a thickness in the range of 0.2 mm to 0.3 mm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A micromodule cable, comprising:
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an outer jacket; a plurality of breakout units enclosed in the outer jacket, each breakout unit having a plurality of micromodules and a jacket enclosing the micromodules, and each micromodule having at least one optical waveguide and a polymer sheath surrounding the at least one optical waveguide and having a thickness in the range of 0.2 mm to 0.3 mm; and a central strength member, the breakout units being arranged around the central strength member. - View Dependent Claims (14, 15, 16, 17)
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18. A micromodule cable, comprising:
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an outer jacket; a plurality of breakout units enclosed in the outer jacket, each breakout unit having a plurality of micromodules, a jacket enclosing the micromodules, and an aramid strain relief element adjacent to the jacket, with each micromodule having at least one optical waveguide and a polymer sheath surrounding the at least one optical waveguide and having a thickness in the range of 0.1 mm to 0.3 mm; and a central strength member, the breakout units being arranged around the central strength member, wherein the micromodule cable satisfies the NFPA 262 plenum burn test, each polymer sheath comprises PVC, and the at least one optical waveguide in the micromodules can be accessed by tearing the micromodule sheath with a user'"'"'s fingers.
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19. A data information transfer system, comprising:
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a plurality of servers, each server having a plurality of optical ports; and at least one micromodule cable comprising an outer jacket;
a central strength member; and
a plurality of breakout cables enclosed in the outer jacket, each breakout cable comprising a plurality of micromodules, at least one micromodule of the breakout cables being connected to at least one of the optical ports, whereineach micromodule comprises a plurality of optical waveguides and a polymer sheath comprising PVC surrounding the waveguides, the polymer sheath having a thickness in the range of 0.2 mm to 0.3 mm - View Dependent Claims (20)
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21. A method of calculating jacket thickness for a cable, the method comprising:
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calculating a maximum jacket thickness for a selected material using the formula;
Material_Modulus=590(Wall_thickness)1.2, whereinMaterial_Modulus is the modulus for the material and Wall_thickness is the jacket thickness.
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Specification