Non-belt fiber and large-core number single-layer stranding optical cable

Abstract

The invention relates to a non-belt fiber and large-core number single-layer stranding optical cable which belongs to the technical field of communication and solves the technical problems of unreasonable structural design and the like in the prior art. The optical cable comprises a center reinforcing piece and a plurality of optical fiber beams. The periphery of each optical fiber beam is respectively sleeved with a loosening sleeve pipe, and fiber paste is arranged in the loosening sleeve pipe. The periphery of the center reinforcing piece is provided with a pad layer. The loosening sleeve pipe carries out single-layer stranding around the center reinforcing piece. The periphery of the stranded loosening sleeve pipe is provided with metal compound belts for coating the loosening sleeve pipes. The periphery of the metal compound belt is coated with a sheath. The invention has the advantages that as the single-layer stranding method is adopted, the production process is simple, the investment of the production equipment is low, and the traditional equipment can be used for producing by arranging a coating color ring device on a tinting machine; the optical fiber is simple to separate, has good containing property, and can contain 288 cores at most; the weatherproof property is good, the high-temperature and low-temperature properties are good, and the optical cable has the functions of moisture prevention, tension resistance, side pressure resistance, shock resistance and the like, and can be used in direct burying, overhead and pipeline laying.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to an optical cable, in particular to a single-layer stranded optical cable with a large number of cores without fiber ribbon. Background technique [0002] After the traditional optical cable exceeds 144 cores, it generally adopts a ribbon fiber or multi-layer twisted structure to increase the capacity of the optical fiber. However, this kind of optical cable has the following disadvantages: the use of ribbon fiber requires additional ribbon fiber and loose sleeve equipment; the use of multi-layer stranding requires many processes, which increases the uncertainty of production costs and quality. Generally speaking, the current optical cables mainly have the following three structures: 1. The structure of the loose tube filled with ointment is adopted, and multiple optical fibers are randomly distributed in the loose tube filled with ointment. When changing, the position of the...

AI Technical Summary

Problems solved by technology

However, this kind of optical cable has the following disadvantages: the use of ribbon fiber needs to add special ribbon fiber and loose sleeve equipment; the use of multi-layer stranding has many processes, which increases the uncertainty of production cost and quality

In order to ensure that the optical cable does not produce attenuation due to excessive strain or small bending during construction or environmental changes, the loose tube must have a large outer diameter, which will result in a large outer diameter of the entire optical cable, and the cost of the optical cable will be high, and This kind of optical cable can only be used for single-fiber fusion splicing, which causes great inconvenience to the optical cable connection.

2. The optical fiber ribbon structure is adopted, and multiple optical fibers are distributed side by side in the UV-cured resin. The optical fiber ribbon is ribbon-shaped and has a small thickness, but the optical fiber ribbon is wider

The above scheme improves the performance of the optical cable to a certain extent, but still cannot fundamentally solve the problems of the prior art

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