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光纤(系指梯度型多模光纤)模拟基带光强调制(或称直接强度(?)调制),是一种最简单的调制方式。它直接用视频信号电压经过电流形式变换成光功率发射。本文简单介绍南京邮电学院通信研究所研制的一种实用光纤系统,该系统已应用于江苏电视台中心台至发射台1.5公里的距离内,传送一路彩色电视的图象和伴音信号。
Fiber (referred to as a gradient multimode fiber) is the simplest modulation method for analog baseband light intensity modulation (or direct intensity modulation). It directly with the video signal voltage through the current form of conversion into optical power transmission. This article gives a brief introduction of a practical optical fiber system developed by Nanjing Institute of Posts and Telecommunications Institute. This system has been applied to the distance of 1.5km from the center station of Jiangsu TV Station to the transmitting station, transmitting the images and accompanying signals of color TV.