Manufacturing method of central tube FTTH enhanced type leading-in optical cable and optical cable

Abstract

The invention relates to a manufacturing method of a central tube FTTH enhanced type leading-in optical cable. The manufacturing method comprises the following steps: the procedure of putting optical fibers into a warehouse, the procedure of coloring optical fibers, the procedure of tightly fastening, the central tube procedure, the procedure of external protection and the procedure of warehouse-out detection, wherein in the central tube procedure, a tightly packed optical fiber fixing device is adopted to reduce the possibility of movement of tightly packed optical fibers in the production process to prevent the situation that the tightly packed optical fibers are in contact with a certain point of the inner wall of a dry-type loose tube for a long time to cause adhesion and further guarantee the water resistance of the dry-type loose tube; in the central tube procedure, the excess length of optical fibers is controlled by adopting one or more of the following manners: adjusting the take-up and pay-off tension of tightly packed optical fibers, adjusting the water temperature difference between water tanks, adjusting distance between water tanks, and adopting polybutylene terephthalate as a central tube material, so as to guarantee the high-and-low temperature performance of an optical cable. The optical cable manufactured by adopting the manufacturing method is simple in structure, low in weight, and convenient and rapid in construction, so that the construction cycle and construction cost are greatly reduced, and a brand new solution is provided for the development of optical communication.

Description

technical field [0001] The invention belongs to the field of optical cable production, and in particular relates to a manufacturing method of a central tube FTTH reinforced lead-in optical cable and the optical cable. Background technique [0002] With the rapid development of FTTX, data services are growing exponentially, and multimedia such as voice, 4G data, and images need to be transmitted. Therefore, larger network capacity and wider bandwidth are required, and the outer diameter of the cable is required to be smaller. Satisfy the laying of existing resources. [0003] In different outdoor and indoor environments, the requirements for optical cables are different. Outdoor cables are required to have high mechanical properties such as tensile and compressive properties, and also have high requirements for waterproof performance, but their softness is poor, and they do not have high requirements for flame retardancy and smoke reduction. Outdoor fiber optic cables are n...

AI Technical Summary

Problems solved by technology

Outdoor cables are required to have high mechanical properties such as tensile and compressive properties, and also have high requirements for waterproof performance, but their softness is poor, and they do not have high requirements for flame retardancy and smoke reduction. Outdoor fiber optic cables are not suitable for indoor use

While pursuing flexibility, indoor optical cables also require high flame retardant properties, but indoor cables generally have poor mechanical properties and do not consider water resistance, so indoor optical cables are not suitable for outdoor deployment

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