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Duplex cables and zipcord cables and breakout cables incorporating duplex cables

A double-stranded cable, figure-8 technology, applied in the direction of light guide, optics, instruments, etc., can solve the problem of difficult separation of optical fibers

Inactive Publication Date: 2014-03-26
CORNING CABLE SYST LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ribbonized fibers, however, can be difficult to separate from each other for connectorization

Method used

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  • Duplex cables and zipcord cables and breakout cables incorporating duplex cables
  • Duplex cables and zipcord cables and breakout cables incorporating duplex cables
  • Duplex cables and zipcord cables and breakout cables incorporating duplex cables

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0033] Such as image 3 The illustrated cable 400 has a diameter 450 of 2.0mm and a cross-sectional area 452 of 3.4mm 2 , and the sheath wall thickness 412 is 0.30mm. The strain relief member 420 is formed from four ends of 1420 denier aramid stretchable yarn that is not plied so as to occupy a nominal area of ​​0.9032mm in the interior of the cable 2 . Optical waveguide 100 occupies an area of ​​0.0982mm 2 , leaving 0.5280mm 2 422 of free space. Sheath 410 is made of PVC.

[0034] According to the embodiments described above, the free space 422 allows the optical fiber 100 to move back and forth within the interior of the cable jacket 410 in order to reduce bending stress on the optical fiber. The stretchable yarn 420, which may not be twisted, shakes out and fills the empty space 422, but not to the extent that the stretchable yarn 420 unduly restricts the movement of the optical fiber 100.

[0035] The illustrated embodiment has a diameter 450 of 2.0 mm. Exemplary a...

example 2

[0043] The breakout cable 600 comprises twelve twinax cables or units 400 with an outer diameter of 1.65mm and a jacket wall thickness of 0.18mm. Strain relief member 420 is formed from aramid stretchable yarn that has not been twisted. Cell jacket 410 is made of PVC.

[0044] Figure 8 is a cross-sectional view of a figure-eight tight-buffered cable 700 consisting of a first paired cable 702 and a second paired cable or unit 704 spliced ​​to the first cable 702 The figure-of-eight tight-bore cable 700 is suitable for applications such as cross-connect jumper boards. Each twinax cable 702 , 704 may be similar or identical to twinax cable 400 in size, composition, and shape, and each twinax cable 702 , 704 includes a cable jacket 712 of thickness 714 and is joined by web 716 . Each cable 702 , 704 includes a strain relief member 720 enclosed in a cable jacket 712 and two optical waveguides 100 .

[0045] According to the embodiments described above, the free space in the du...

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Abstract

Interconnect cables utilize bend-insensitive fibers and relatively large free space areas in the cable jackets to reduce bend-induced delta attenuation. Tensile yarns can be included as strain-relief components, but can be relatively loosely packed in order to inhibit bend-induced attenuation.

Description

[0001] Cross References to Related Patent Applications [0002] This application claims the benefit of US Application No. 61 / 152,937, filed February 16, 2009, which is generally incorporated herein by reference in its entirety as provided herein. technical field [0003] The present disclosure generally relates to fiber optic twinax cables and assemblies that include multimode optical fibers. Background technique [0004] With the ever-changing deployment of optical networks, such as data centers, there is a need to improve the performance, manageability, bend tolerance, maneuverability, and flexibility of fiber optic components, such as cables, cable assemblies, and network element. Unlike long-distance applications, data centers and the like typically use multimode fiber rather than single-mode fiber. Because multimode fibers have relatively larger cores, multimode fibers are more sensitive to events that cause optical attenuation than single-mode fibers, which have smal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/44
CPCG02B6/4432G02B6/0288G02B6/0365
Inventor 威廉·C·赫尔利柯蒂斯·P·库依
Owner CORNING CABLE SYST LLC