Ultra-soft temperature-resistant bulletproof optical cable and production method thereof

Abstract

The invention relates to an ultra-soft temperature-resistant bulletproof optical cable and a production method thereof. The optical cable comprises a cable core, a plastic foaming layer, a bulletproof armored layer and an outer sheath layer, the surface of the cable core is provided with the plastic foaming layer, the outside of the plastic foaming layer is provided with the bulletproof armored layer, the outside of the bulletproof armored layer is provided with the outer sheath layer, the cable core comprises optical fiber units and a central reinforcing element which are twisted in an SZ twisting manner, each optical fiber unit comprises coated optical fibers and a buffer tube, the external parts of the coated optical fibers are wrapped by the buffer tube, the central reinforcing element comprises flexible reinforcing members and a PE sheath layer wrapping the external parts of the flexible reinforcing members, and the outer sheath layer is a bellows sheath. According to the optical cable, good thermal insulation performance is achieved by employing the plastic foaming layer structure, the impact force of the exterior on the optical cable can be effectively buffered, the optical fiber has good flexibility and good bulletproof performance by employing the bulletproof armored layer, the overall bending resistance of the optical fiber can be effectively improved by employing the bellows outer sheath, and the bending recovery toughness can be improved.

Description

technical field [0001] The invention relates to an optical fiber cable, in particular to a super-flexible, temperature-resistant bulletproof optical cable with high flexibility, high temperature resistance and gunshot resistance and a production method thereof. Background technique [0002] For traditional optical fiber cables, due to the limitation of optical cable materials and structures, when the external environment such as temperature and humidity changes, the signal transmission of the optical fiber in the optical cable will be affected to a certain extent. The conventional bending radius of the optical cable is 40 times the diameter of the optical cable. Some special Under construction conditions, optical cables are often required to have better flexibility and bending performance, but working under a small bending radius for a long time will prevent the internal stress of the optical cable from being released, which will not only easily affect the optical fiber trans...

AI Technical Summary

Problems solved by technology

[0002] For traditional optical fiber cables, due to the limitation of optical cable materials and structures, when the external environment such as temperature and humidity changes, the signal transmission of the optical fiber in the optical cable will be affected to a certain extent. The conventional bending radius of the optical cable is 40 times the diameter of the optical cable. Some special Under construction conditions, optical cables are often required to have better flexibility and bending performance, but working under a small bending radius for a long time will prevent the internal stress of the optical cable from being released, which will not only easily affect the optical fiber transmission performance but also reduce the service life of the optical cable. In addition, it is not uncommon for field optical cables to be damaged by gunshots at present, causing great troubles to optical cable construction and subsequent maintenance

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