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Soft sleeve air-blowing optical cable

A soft sleeve and optical cable technology, applied in the field of photoelectric transmission, can solve the problems of increased optical fiber attenuation and easy bending of the sleeve

Pending Publication Date: 2020-10-27
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, reducing the diameter of the fiber and the diameter of the sleeve will cause the problem of increased fiber attenuation, and the sleeve is more prone to bending

Method used

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  • Soft sleeve air-blowing optical cable
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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Examples of the present invention are figure 1 As shown, it includes an outer sheath 1 and a cable core wrapped in the outer sheath. The cable core includes a non-metallic central reinforcement 5 and a loose tube 2 twisted on the outer periphery of the central reinforcement. The loose tube is passed through After the SZ is twisted, it is bound by binding yarn. The loose tube is equipped with an optical communication unit 3 and filled with a water-blocking material 4. The water-blocking material is water-blocking powder or water-blocking ointment. The loose tube is made of TPEE, TPU Or TPV material is extruded at 200-240°C, and its elastic modulus is about 450MPa; the optical communication unit 3 is a bending-resistant single-mode optical fiber, the outer surface of the optical fiber is coated with inner and outer coatings, and the inner The elas...

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Abstract

The invention relates to a soft sleeve air-blowing optical cable. The cable comprises a cable core and an outer sheath wrapping the cable core, wherein the cable core is a layer-stranded cable core and comprises a central reinforcer and a loose tube stranded at the periphery of the central reinforcer, an optical communication unit is sleeved in the loose tube, the optical cable is characterized inthat the loose tube is made of a flexible plastic material, the elastic modulus of the flexible plastic material is 100-700MPa, and the outermost layer is an outer sheath. The optical cable is simplein structure, small in diameter, light in weight, high in optical fiber density and good in air-blowing laying performance; the loose tube is made of the flexible sleeve plastic material, is good inflexibility, is easy to bend, cannot be bent, can achieve the small-bending-radius coiling in the connector box, enables the optical fiber coiled in a divergence mode to be better protected, does notneed to break the optical fiber, greatly facilitates branching and connection of an optical cable, and improves construction efficiency.

Description

technical field [0001] The invention relates to a soft-sleeved air-blown optical cable, which belongs to the technical field of photoelectric transmission. Background technique [0002] Air-blown micro-cable is a kind of optical cable that can be laid by "air blowing". It has the advantages of high fiber density, small diameter, light weight and high air blowing laying efficiency. There are a wide range of applications. For the air-blown micro-cable with a large number of optical fiber cores, it is generally a layer-stranded structure, and the cable core is bound by the central strength member and the loose tube twisted in the SZ direction, and then a layer is extruded on the cable core. jacket. Among them, the loose tube is made of secondary plastic material, the secondary plastic material is PBT, and its elastic modulus is relatively high, about 2200MPa. [0003] During the construction of air-blown micro-cables, when the optical fiber enters the optical box or splice b...

Claims

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Application Information

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IPC IPC(8): G02B6/44
CPCG02B6/4432G02B6/4434G02B6/4438G02B6/02395G02B6/441G02B6/44384
Inventor 胡海峰阮云芳杨向荣祁林郑磊
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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