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Novel direct-protection type outdoor optical cable

An outdoor optical cable, a new type of technology, applied in the field of new direct-protected outdoor optical cables, can solve the problems of low tensile performance and adaptability to temperature changes of optical cables, improve optical properties and mechanical properties, and avoid bending strain and stretching of optical fibers and the effect of improving flattening performance

Inactive Publication Date: 2010-01-13
FENGHUO COMM SCI & TECH CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that the tensile performance of the optical cable and the performance of adapting to temperature changes are not high

Method used

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  • Novel direct-protection type outdoor optical cable
  • Novel direct-protection type outdoor optical cable
  • Novel direct-protection type outdoor optical cable

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Embodiment 2

[0024] The difference between this embodiment and Embodiment 1 is that the cross section of the sheath 4 is in the shape of a figure 8, and an optical cable strength member 3 and an optical fiber unit are respectively arranged in the inner cavity of the figure 8 shape.

[0025] In the second embodiment, several optical fiber units can also be used, and the number of bare optical fibers in the optical fiber unit is 1 to 12, for example, as Figure 4 In the fourth embodiment shown, 12 optical fiber units are used, and each optical fiber unit is composed of 12 bare optical fibers.

[0026] The traditional loose tube is no longer needed outside the optical fiber unit of the present invention, and the sheath is directly carried out outside the optical unit. Since the optical fiber unit in the optical cable is an integral unit, there is no excess length, and the optical fiber does not have microbending phenomenon, which improves the high and low temperature of the optical cable Perf...

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Abstract

The invention relates to an optical cable, in particular to a novel direct-protection type outdoor optical cable, comprising a plurality of optical fiber units which are arranged in a jacket, wherein each optical fiber unit is an integral structure which comprises a plurality of bare optical fibers, water block material is filled between the optical fiber units and the jacket, and at least one optical cable reinforcing piece is embedded into the jacket along an axial direction. The Novel direct-protection type outdoor optical cable changes the method that the optical cable bears external force by arranging optical fiber residue length in a traditional central tube cable, further increases the curvature radius of the optical fibers in the optical cable, improves the optical characteristic and the mechanical characteristic of the optical cable, avoids the optical fiber bending strain caused by the optical fiber residue length which exists in the cable for a long period, improves the high and low temperature capability of the optical cable and obviously improves the stretching and flattening performance of the optical cable.

Description

technical field [0001] The invention relates to an optical cable, in particular to a novel direct protection outdoor optical cable. Background technique [0002] With the rapid development of optical access network construction and the continuous progress of access technology, the market's requirements for access optical cables are constantly increasing, mainly reflected in the increasingly higher requirements for the mechanical and environmental performance of optical cables. At the same time, in order to save Pipeline resources, the user's requirement for the size of the optical cable is as small as possible. [0003] In the traditional central tube optical cable for outdoor use, the excess length of the optical fiber must be set so that the optical cable can withstand external forces. In this optical cable structure, the optical fiber is placed in the loose tube, and there is a certain gap between it and the inner wall of the loose tube. The optical fiber has a certain e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
Inventor 史惠萍钱峰王世
Owner FENGHUO COMM SCI & TECH CO LTD
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