A kind of reel type optical unit optical cable and its manufacturing process

Abstract

The invention discloses a reel-type optical unit optical cable and its manufacturing process, comprising an optical unit and a jacket layer, the optical unit includes a reel-type optical fiber ribbon and an aramid fiber in the center, and the reel-type optical fiber ribbon is sequentially wrapped with resistance Water materials, cable ties, and sleeves, the manufacturing process steps are: 1. Make a number of optical fibers into optical fiber ribbons through a belt mould; Form an optical fiber column, and put it into the sleeve to form an optical unit after covering the water-blocking material and tying it; 3. Make a tape-type central tube optical cable or a layer-stranded optical cable, and have a mold with a resin press-in tube, The optical fiber difference between each layer of the optical fiber column is 6, the outer diameter of the 6-90-core optical fiber column is 636µm-2332µm, the number of layers is 1-5 layers, and the diameter of the optical unit is 1.4-4.8mm. The sleeve of the present invention The diameter is small, the optical fiber cable made is light in weight and small in diameter, the bending radius of the optical cable is small, and the construction and laying are easy. The mesh optical fiber ribbon can be welded at one time, and the construction is convenient.

Description

technical field [0001] The invention relates to a roll-type optical fiber ribbon cable and a manufacturing process of the optical unit cable. Background technique [0002] With the continuous development of urban construction and communication construction, the optical fibers required for optical cables are getting larger and larger. Generally, 245µm optical fibers are used for large-core optical cables with 144 cores and 12 cores per tube. One-to-one butt joint of optical fibers is usually connected to the 144-core optical cable connector, which takes several hours of construction time, and the optical cable structure is also relatively large, which is time-consuming and laborious to install and lay. With the development of communication construction, people have developed optical fiber ribbon cables, and at the same time developed an optical fiber fusion splicer, which can splice all the optical fibers of an optical fiber ribbon at one time, which makes the fusion of large...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of urban construction and communication construction, the optical fibers required for optical cables are getting larger and larger. Generally, 245µm optical fibers are used for large-core optical cables with 144 cores and 12 cores per tube. One-to-one optical fiber connection, often connected to the 144-core optical cable connector, takes several hours of construction time, and the optical cable structure is also relatively large, which is time-consuming and laborious to install and lay.

With the development of communication construction, people have developed optical fiber ribbon cables, and at the same time developed an optical fiber fusion splicer, which can splice all the optical fibers of an optical fiber ribbon at one time, which makes the fusion of large-core optical cables convenient, but this The optical fiber ribbon cable also has its defects, because the optical fiber ribbon cable is to bond several optical fibers together with a special resin to form an encapsulated or bonded optical fiber ribbon with specifications such as 4, 6, 8, 12, 24, etc., and then several optical fibers The optical fiber ribbon is placed in the sleeve at the same time, and one sleeve is made into a central tube optical cable or a layer-twisted optical fiber ribbon cable is made after twisting multiple sleeves. Since the optical fiber ribbon is arranged in a rectangular or rhombus shape in the sleeve, the rhomboid optical fiber is easy to Extruding with the inner wall of the casing produces a high loss point, so the diameter of the inner tube is often made larger, and the bending radius of the optical fiber ribbon is required to be larger, and the optical fiber ribbon cable produced in this way often has a relatively large structure and self-weight. During urban pipeline construction and laying Due to its weight, it is difficult to lay it, and fiber breakage accidents often occur due to the small bending radius during the construction process.

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