A brief introduction of optical fiber cable
fiber is a kind of communication cable, by two or more glass or plastic core, the core is located in a protective covering, covered with PVC plastic outer casing. Along the internal signal transmission generally use infrared . Optical fiber communication is one of the important ways of modern information transmission. It has a large capacity, long distance relay, the secrecy good, is not subject to electromagnetic interference and saving copper, etc. Cable structure: according to the state of coating in cable, fiber optic cable has tight structure and loose structure. Skeleton type cable is a kind of typical structure. fiber optic equipment embedded in skeleton peripheral spiral flute, is there room to activities. This kind of fiber optic cable isolation characteristics of the external force and prevent the microbend loss is better. Hinged type cable when using tightly packaged fiber is a kind of typical structure, coated fiber was tightly wrap the structure, but the twisted type using a loose pack fiber optic cable, due to the can activities in the secondary coating plastic pipe, is still loose structure. Hinged type cable technology is relatively simple, the performance good. In addition, there are ribbon cable, such as single core cable structure type. Various kinds of fiber optic cable has enhanced, to carry tension. It is composed of high modulus of elasticity of high strength material, commonly used with steel wire, high strength glass fiber and synthetic fiber high modulus aramid fiber, etc. To enhance a cable in the use of produce only very low elongation deformation under stress ( For example, less than 0. 5%) To protect the fiber from stress or only under low stress, in case fiber fracture. Cable sheath structure and material depending on the use environment and the request, and using the same cable under the condition of basically the same. According to the use of fiber optic cable environment, directly buried aerial optical cable, optical cable, submarine optical cable, optical cable field, etc.
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