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自从80年代末AM光传输技术应用于CATV网络以来,CATV的发展非常迅速,在欧美等发达国家的CATV网得到了全面改造,有效宽带从300MHz很快提升到750～862MHz,最高达1000MHz;传播的电视频道也由50套发展到100套甚至150套,使CATV网的社会效益和自身的经济效益都得到明显地增加。 我国第一套CATV光传输设备是1991年底引进的,在1993年至1996年的四年时间内,传输带
Since the late 1980s, when AM optical transmission technology was applied to CATV networks, CATV has developed rapidly. CATV networks in developed countries such as Europe and the United States have been completely renovated. Effective broadband is rapidly raised from 300 MHz to 750 to 862 MHz and up to 1000 MHz. Of the television channels from 50 sets to 100 sets or even 150 sets of CATV network so that the social benefits and their economic benefits have been significantly increased. China’s first CATV optical transmission equipment was introduced at the end of 1991. During the four years from 1993 to 1996, transmission belts