Filling type optical cable

A filling type, optical cable technology, applied in the directions of light guides, optics, optical components, etc., can solve the problems of optical cable stability, optical performance, bending ability, unsatisfactory optical fiber transmission performance, and high requirements for yarn binding materials. High production efficiency, easy construction and maintenance, and stable structure

Inactive Publication Date: 2017-06-13
TONGDING INTERCONNECTION INFORMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure has high requirements on the material of the yarn binding, and unsuitable materials may easily lead to a decrease in the transmission performance of the optical fiber, and may even cause communication interruption
[0003] There are also some technologies that try to improve the structure and materials of optical cables, but they are always unsatisfactory in terms of stability, optical performance, and bending ability of optical cables.

Method used

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  • Filling type optical cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 As shown, the injection-filled optical cable 1 includes a cable core, a water-blocking layer 3 and an outer sheath 4 of low-smoke and halogen-free material that are sequentially coated on the outer periphery of the cable core. The cable core includes a steel wire as a strengthening element 1 and a modified polypropylene plastic optical fiber bundle tube 2 arranged on the outer circumference of the steel wire, and the remaining space filled in the water blocking layer 3 after removing the steel wire and the modified polypropylene plastic bundle tube The inner protective layer 5 formed by ethylene-vinyl acetate copolymer material X1, there is no additional sealing between the ethylene-vinyl acetate copolymer material X1 and the steel wire, and between the ethylene-vinyl acetate copolymer material X1 and the modified polypropylene plastic bundle tube . Optical fibers are arranged in the modified polypropylene plastic optical fiber bundle tube, fiber paste...

Embodiment 2

[0032] The injection-filled optical cable 2 includes a cable core, a water-blocking layer and a linear low-density polyethylene outer sheath that are sequentially coated on the outer periphery of the cable core. The cable core includes steel strands as strengthening elements and four polybutylene terephthalate optical fiber bundle tubes twisted around the steel strands, and the steel strands and polyethylene terephthalate are removed by filling in the water-blocking layer. The inner protective layer formed by the ethylene-vinyl acetate copolymer material X2 in the remaining space of the butylene formate optical fiber bundle tube, between the ethylene-vinyl acetate copolymer material X2 and the steel strand, and between the ethylene-vinyl acetate copolymer material X2 and the There is no additional seal between the butylene phthalate fiber optic bundle tubes. The butylene phthalate fiber bundle tube is provided with optical fiber and fiber paste as filling. The stranding pitch...

Embodiment 3

[0040] The injection-filled optical cable 3 includes a cable core, a water-blocking layer, an armor layer, and a medium-density polyethylene outer sheath that are sequentially coated on the outer periphery of the cable core. The cable core includes FRP as a strengthening element and six modified polypropylene plastic optical fiber bundle tubes arranged on the outer periphery of FRP, and ethylene-vinyl acetate copolymer filled in the water-blocking layer to remove the remaining space of FRP and modified polypropylene plastic bundle tubes. The inner protective layer formed by the material X3, and there is no additional seal between the X3 ethylene-vinyl acetate copolymer material and the fiberglass and modified polypropylene plastic bundle tube. The modified polypropylene plastic bundle tube is provided with optical fiber and fiber paste as filling. The stranding pitch of the modified polypropylene plastic bundle tube is 70mm.

[0041] The ethylene-vinyl acetate copolymer mater...

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Abstract

The invention relates to a filling type optical cable. The optical cable includes a cable core and an outer protection layer with which the periphery of the cable core is coated; the cable core includes a reinforcing element, one or more optical fiber bundle tubes and an inner protection layer, wherein the optical fiber bundle tubes are arranged on the periphery of the reinforcing element, the outer protection layer is internally filled with the inner protection layer, the inner protection layer removes remaining space of the reinforcing element and the optical fiber bundle tubes and is made of ethylene-vinyl acetate copolymer materials, and at least one optical fiber is arranged in the one or more optical fiber bundle tubes. The filling type optical cable is stable in structure and good in bending and lateral pressure resistance performance.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication optical cables, in particular to a filling type optical cable. Background technique [0002] In recent years, with the continuous development of optical fiber network communication in my country, the demand for optical fiber cables is increasing, and the technical requirements for optical cables are also getting higher and higher. Ordinary optical cables usually spend a lot of time and energy on the construction and maintenance of optical cables during operation. Existing optical cables are mainly divided into filled optical cables, fully dry optical cables and semi-dry optical cables, among which filled optical cables and semi-dry optical cables Type optical cables are filled with ointment, which is more time-consuming and laborious in terms of construction connection and subsequent maintenance, and the ointment brings a lot of inconvenience in construction and maintenance, is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
CPCG02B6/443G02B6/4483G02B6/44384
Inventor 沈小平朱宇杭施双宝计中华肖旭阳
Owner TONGDING INTERCONNECTION INFORMATION CO LTD
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