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Basic Knowledge and Classification of Fiber Optic Cable


Fiber optic cables are manufactured to meet optical, mechanical or environmental performance specifications. It is a communication cable assembly that uses one or more optical fibers placed in a sheath as a transmission medium and can be used individually or in groups. The fiber optic cable is mainly composed of optical fibers (glass filaments as thin as hair), plastic protective sleeves and plastic outer skins.


Ⅰ. Basic structure of fiber optic cable


The basic structure of fiber optic cable is generally composed of several parts such as cable core, reinforced steel wire, filler and sheath. In addition, there are fiber optic products and components such as waterproof layer, buffer layer, insulated metal wire and so on as needed.


Ⅱ. Fiber optic cable types


1. According to different transmission performance, distance and purpose, fiber optic cables can be divided into user fiber optic cables, local telephone fiber optic cables, long-distance fiber optic cables and submarine fiber optic cables.


2. According to the different types of optical fibers used in the fiber optic cable, fiber optic cables can be divided into single-mode fiber optic cable and multi-mode fiber optic cable.


3. According to the number of optical fiber cores in the fiber optic cable, the fiber optic cable can be divided into single-core fiber optic cable, dual-core fiber optic cable, etc.


4. According to the different reinforcement configuration methods, fiber optic cables can be divided into central strengthening member fiber optic cables, dispersed strengthening member fiber optic cables, sheath strengthening member fiber optic cables and integrated outer sheath fiber optic cables.


5. According to different transmission conductors and medium conditions, fiber optic cables can be divided into metal-free fiber optic cables, ordinary fiber optic cables, and integrated fiber optic cables (mainly used for railway dedicated network communication lines).


6. According to different laying methods, fiber optic cables can be divided into pipeline fiber optic cables, directly buried fiber optic cables, aerial drop cables and underwater fiber optic cables.


7. According to different structural modes, fiber optic cables can be divided into flat structure fiber optic cables, stranded fiber optic cables, skeleton fiber optic cables, armored fiber optic cables and high-density user fiber optic cables.