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在有线电视光缆传输系统中,使用的器件分无源器件和有源器件,它们分别在传输系统中,起着不同的作用。一、光无源器件光缆传输系统中的无源器件有光分路器、光波分复器、光隔离器、光纤活动连接器、光衰减器、光滤波器、光开关等,它们在光纤链路中起连接、分配、隔离、滤波等作用。1.光分路器光分路器也叫光功率分配器,它的作用与同轴电缆传输系统中的分支器作用类似,把输入的光信号按一定功率分配比例分成多路光信号输出。按照光分路器的结构原理可以分为微光型、光纤型和光波导通路
In the cable television cable transmission system, the device used is divided into passive devices and active devices, which respectively play different roles in the transmission system. First, the optical passive components Optical fiber transmission system in the passive components of optical splitters, optical splitters, optical isolators, fiber optic connectors, optical attenuators, optical filters, optical switches, which are in the optical fiber chain The road from the connection, distribution, isolation, filtering and so on. 1. Optical splitter Optical splitter also called optical power splitter, its role and coaxial cable transmission system in the splitter role similar to the input optical signal according to a certain percentage of the power distribution is divided into multiple optical signal output. According to the principle of optical splitter structure can be divided into shimmering, fiber optic and optical waveguide