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Cable and cable in the structure of the main difference is that the cable has a reinforced components, the cable does not strengthen the components, they can withstand a certain mechanical tensile load.
Fiber optic cable and cable are transmission data and signal communication tools, are weak. Cable transmission fast, low loss, suitable for long-distance transmission. Single-mode, multi-mode two. Single mode is more suitable for long-distance transmission, multi-mode suitable for local area network and the like. Cable transmission relative to the cable is relatively slow, high loss, not suitable for long distance. The cost is higher. The difference lies in the optical fiber transmission data, the cable is used to transmit data.
Cable transmission cable, power cable and communication cable, each material is not the same, so the transmission rate is not the same, the communication cable transmission distance and the rate by the diameter and distance, the general 0.4 diameter can transmit voice signal 6.6 km, 0.5 The transmission capacity and distance of the optical fiber communication system are affected by the loss of the fiber, the dispersion characteristics of the fiber and its nonlinearity, and so on. The transmission capacity and distance of the optical fiber communication system are mainly used in the communication. At present, the optical signal transmission distance of the relayless amplifier can reach 120km. In addition, because of the optical amplifier represented by the erbium-doped fiber amplifier, the loss characteristic of the optical fiber is no longer the main factor limiting the transmission distance. At present, the main factors that limit the fiber transmission distance and transmission capacity are the dispersion and non-linear characteristics of the fiber. The transmission of the cable can be a pair of loops, or it can be a loop, because the communication industry in order to save fiber resources in many places to achieve the EPON technology, EPON is a point to multi-point network structure, passive optical fiber transmission Way, based on high-speed Ethernet platform and TDM time MAC (MediaAccessControl) media access control, providing a variety of integrated services, broadband access technology. , EPON technology transmission medium using single-core fiber, the central end to the client maximum distance of 20 km, the total transmission capacity of the access system for the uplink and downlink 155Mbps.
