Side-slot-reinforced leading-in optical cable and production process

Abstract

The invention provides a side-slot-reinforced leading-in optical cable and a production process. The side-slot-reinforced leading-in optical cable comprises an optical fiber, a sheath and reinforcement pieces and is characterized in that the playground type sheath covers the outer side of the optical fiber; diagonal side slots are formed in straight side surfaces of the playground type sheath and are triangular slots; the optical fiber is arranged at the center of the playground type sheath; the reinforcement pieces are placed on the circular ends of the playground type sheath and are symmetrically arranged on the two sides of the optical fiber. According to the side-slot-reinforced leading-in optical cable and the production process, the utilized side slots are diagonally staggered, and a stress centralizing point avoids the optical fiber, so that walls on the two sides of the optical fiber are thickened; the optical fiber is protected, the integral wall thickness of the optical cable is increased, and the improvement on the integral strength of the optical cable is ensured; by means of the designed staggered side slots, tearing of slotted parts due to the weight outdoors for a long term can be avoided; according to application environments, the tearing force of the optical cable can be freely controlled; the effective section area is further shortened, and the utilization rate of materials is further increased; a prefabricated end forming process and the traditional butterfly-shape leading-in optical cable are not different and can match with the existing devices.

Description

technical field [0001] The invention relates to the technical field of optical cable covering, in particular to a side groove reinforced drop optical cable and a production process. Background technique [0002] With the vigorous development of FTTH, the broadband China strategy is in full swing. Butterfly lead-in optical cables are widely used in cities and villages in my country. The traditional butterfly-shaped lead-in cable is unavoidably curled, twisted or stressed unevenly during construction in urban areas, suburbs and villages with dense trees. The connection point corresponding to the side slot, and the connection point is facing the optical fiber, and the measures to protect the optical fiber are quite weak, except for a very thin sheath, there is no other material, and the protection for the optical fiber is extremely poor. The slotting was originally designed to facilitate the stripping of the optical cable and take out the optical fiber, but it is easy to be t...

AI Technical Summary

Problems solved by technology

The traditional butterfly-shaped lead-in cable is unavoidably curled, twisted or stressed unevenly during construction in urban areas, suburbs and villages with dense trees. The connection point corresponding to the side slot, and the connection point is facing the optical fiber, and the measures to protect the optical fiber are quite weak. There is no other material except a thin layer of sheath, and the protection of the optical fiber is extremely poor.

The slotting was originally designed to facilitate the stripping of the optical cable and take out the optical fiber, but it is easy to be torn apart due to force during the construction process, which is prone to water seepage, causing hydrogen damage to the optical fiber, increasing the attenuation coefficient of the optical fiber, and reducing the service life of the optical fiber.

At the same time, in some areas where there are many insects, because the protection of the optical fiber in the optical cable is weak, the optical cable will be damaged by insects after construction.

Because the slots are convenient for insects to stay and hide, insects especially like to lay eggs in the slots of the optical cable. The insects use the butterfly-shaped black outer sheath of the optical cable as a withered tree trunk. The thorn in the middle of the oviduct rubs repeatedly on the surface of the rough optical cable, and under the action of friction, the surface of the optical cable is worn to form a certain small hole, and then starts 180° reciprocating rotating friction, and the hole is worn and enlarged through the serrated oviposition tube until the hole The size and depth are suitable for laying eggs. Because the optical fiber protection at the slot of the traditional butterfly optical cable is weak, it is easy to pierce the outer sheath of the optical cable, damage the optical fiber, and affect normal information communication.

After long-term production and practice, the traditional butterfly drop cable is no longer suitable for popularization and use in many practical applications. It is necessary to develop a drop cable that meets more structural requirements and performance requirements to improve the reliability and reliability of the user drop cable. applicability

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