Full-dry high fiber count air-blowing micro-cable and optical fibre bundle processing method

Abstract

The invention provides a full-dry high fiber count air-blowing micro-cable and a preparation method of an optical fibre bundle thereof. The micro-cable contains a central nonmetallic reinforcer, a plurality of optical fibre bundles which are stranded and arranged on the nonmetallic reinforcer, a nonmetallic tension element which is wrapped or longitudinally covered on the periphery of the optical fibre bundles and a polyethylene jacket which is arranged on the periphery of the tension element through extrusion molding. Each optical fibre bundle is prepared by two-step coating and photocuring and has higher flexibility. A plurality of the prepared optical fibre bundles are directly stranded to obtain a cable, thus the fiber count of the cable is greatly increased; and grease is not required to be filled in the whole optical fiber cable and the entire optical fiber cable is in a full-dry structure, thus the environmental pollution in construction can be avoided and the micro-cable provided by the invention has higher promotion value and application value.

Description

technical field [0001] The invention relates to a communication optical cable, in particular to an optical cable suitable for being blown into a duct for laying. Background technique [0002] During the laying of optical cables in the metropolitan area network, since the pipeline resources have already been laid, there is no need to re-lay the pipelines for the transmission of optical signals. At the same time, limited by the constraints of existing pipeline resources and human resources, on the one hand, it is required that the outer diameter of the optical cable should be as small as possible, and on the other hand, it is required that the number of cores of the optical fiber should be as large as possible to meet the needs of signal transmission. [0003] Most of the existing air-blown optical cables have a central bundle tube structure, such as figure 1 As shown, its center is a plurality of optical fibers 11, the optical fibers are arranged in the loose tube 12, and th...

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Problems solved by technology

[0003] Most of the existing air-blown optical cables have a central bundle tube structure, such as figure 1 As shown, its center is a plurality of optical fibers 11, the optical fibers are arranged in the loose tube 12, and the fiber paste 13 is filled between the loose tube 12 and the optical fiber 11, and the outer circumference of the loose tube 12 is coated with aramid yarn in turn And PE sheath, the number of fiber cores of this kind of air-blown optical cable can only be less than 24 cores, which cannot meet the requirements of large core number

And the optical cable contains liquid fiber paste, which is easy to cause environmental pollution during construction

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