Layer-stranded optical cable

Abstract

The invention discloses a layer-stranded optical cable, which consists of a cable core and a sheath which is coated outside the cable core, wherein the cable core is provided with a reinforcement sleeved with a cushion, a plurality of optical fiber units which are arranged at the periphery of the cushion in a stranded mode, a binding layer, a plurality of optical fiber units which are arranged atthe periphery of the binding layer in a stranded mode, and a plurality of filling ropes from the inner side to the outer side in turn; the sheath consists of a waterproof tape which is coated outsidethe cable core, an inner protection layer which is extruded at the periphery of the waterproof tape, a steel tape armor layer which is longitudinally coated at the periphery of the inner protection layer, and a polyethylene outer protection layer which is coated outside the steel tape armor layer; and each optical fiber unit consists of a plurality of optical fibers, a loose sleeve which is coated outside the plurality of optical fibers, and fiber paste which is filled between the loose sleeve and the optical fibers. The optical fiber units are in double-layer stranded arrangement, the optical fiber number of a single optical cable is improved, and the optical fiber concentration is high; moreover, the steel tape armor layer which is arranged outside the inner protection layer improves the tensile property and lateral pressure resistance, the optical cable subjected to external force impact is not damaged, and a signal can be smoothly transmitted.

Description

technical field [0001] The invention relates to a layer twisted optical cable, Background technique [0002] With the rapid development of the communication industry, optical cables are widely used in the communication industry, among which layer twisted optical cables are the most widely used optical cables. Most of the existing layer-twisted optical cables have only one layer of optical fiber units twisted and arranged in phase, the number of optical fibers is small, and the concentration of optical fibers is not high. Contents of the invention [0003] The object of the present invention is to provide a layer-stranded optical cable with a large number of optical fibers and a high concentration of optical fibers. [0004] In order to solve the above problems, the solution adopted by the present invention is: a layer-stranded optical cable, which is composed of a cable core and a sheath wrapped outside the cable core. The strength member, a plurality of optical fiber un...

AI Technical Summary

Problems solved by technology

Most of the existing layer-twisted optical cables have only one layer of optical fiber units twisted and arranged, the number of optical fibers is small, and the concentration of optical fibers is not high

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