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为实施广播电视“村村通”工程,同时也为全省有线广播电视网络整合和数字电视整体平移及发展增值业务打造坚实的平台,玉屏县文化体育广播电视旅游局向县委、政府作专题汇报,并设计出乡镇光缆联网的升级改造方案。1有线电视传输技术1 310 nm AM-VSB光纤传输系统是一个宽带、线性光链路,它由光发送机、单模光纤和光接收机组成。AM-VSB光纤传输系统的技术指标主要有载噪比C/N、组合二阶互调CSO和组合三阶差拍CTB。C/N系
For the implementation of radio and television “village through ” project, but also for the province’s cable radio and television network integration and digital TV as a whole shift and the development of value-added services to create a solid platform, Yuping County Culture, Sports, Broadcasting and Television Tourism Bureau to the county government for the Special report, and design of the township cable network upgrade program. 1 CATV transmission technology The 1 310 nm AM-VSB fiber optic transmission system is a broadband, linear optical link consisting of an optical transmitter, a single-mode fiber and an optical receiver. The technical indexes of AM-VSB optical fiber transmission system mainly include carrier to noise ratio C / N, combined second-order intermodulation CSO and combined third-order difference CTB. C / N system