Optical cable for wireless radio remote control and manufacturing method thereof

Abstract

The invention belongs to the technical field of optical cables, and relates to an optical cable for a remote radio head. The optical cable comprises a center reinforcer, a plurality of filling ropes, a plurality of tight tube optical fibers, a peripheral reinforcer, a binding layer and a sheath layer. The optical cable is characterized in that the filling ropes and the tight tube optical fibers are distributed in a spaced mode by surrounding the center reinforcer and are parallel to the center reinforcer, the peripheral reinforcer is located in a cable core gap formed by the center reinforcer, the filling ropes and the tight tube optical fibers, the tight tube optical fibers are wrapped by the binding layer, the binding layer is wrapped by the sheath layer in an extrusion mode, and the diameter of the filling ropes is larger than or equal to the diameter of the tight tube optical fibers. The invention further discloses a manufacturing method of the optical cable. The optical cable mainly solves the problems that according to an existing cable twisting mode, tight tube optical fibers are prone to damage and are likely to be pricked by a binding layer. The optical cable has the advantages of being simple in structure, easy to manufacture and more resistant to heat, and additional attenuation changes of the optical fibers are small when the optical cable is used within the wide temperature range.

Description

technical field [0001] This application is a divisional application of the invention patent application with the application number 201310135672.9, the invention name: a wireless radio remote optical cable and its manufacturing method, and the application date: April 18, 2013. technical field [0002] The invention belongs to the technical field of optical cables, and in particular relates to an optical cable for wireless radio remote control and a manufacturing method thereof. Background technique [0003] In the base station signal transmission system, the optical cable from the baseband unit BBU (BaseBandUnit) to the remote radio unit RRU (RemoteRadioUnit) is called a radio remote optical cable. The optical fiber cable for remote radio unit is mainly used in the local remote at the same site, and the length is usually between 100 meters and 300 meters. With the construction and transformation of the machine station, a large number of optical cables for wireless radio f...

AI Technical Summary

Problems solved by technology

For this reason, domestic research and development in this area have been carried out. The authorized announcement number is CN201689203U, and the name is double-core circular remote optical cable. Double-helix twisting method, this kind of optical cable is easy to cause stress to the relatively fragile optical fiber during production, which leads to an increase in the optical attenuation of the optical cable, and it is difficult to restore the original performance after helical twisting

The authorized announcement number is CN202600198U, and the name is a central beam tube type remote optical cable, which is formed by placing the optical fiber in the central beam tube, then placing a strengthening member outside the central beam tube, and extruding a sheath outside the strengthening member; The external reinforcement used is a non-metallic reinforcement belt, so it is relatively hard in use, and the bending radius cannot meet the requirements of use

The authorized announcement number is CN202600201U, and the name is a two-core embedded radio frequency remote optical cable for communication base stations. It is a tear rope that twists the optical fiber unit and the filler with aramid fiber inside, and places the aramid reinforcement on the outside of the filler. Then it is formed by extruding the sheath; after stranding, it is difficult for the optical fiber to restore the original performance, and the stranding equipment is more expensive to invest, after stranding, the production speed slows down significantly

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