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1982年8月27日至9月11日,作者有机会随同以上海市邮电管理局为主,包括市内电话局,市计算技术所等单位组成的“电信新技术考察团”赴日本访问。由日本电信电话公社接待,在日本研究和生产光纤传输通信和程控电子交换设备的有关单位进行参观和座谈。本文只简略介绍日本在应用光纤传输系统的情况。日本的通信网络已开始由原来的模拟式网络向数字式网络发展,主管和开发国内通
August 27, 1982 to September 11, 1982, the author has the opportunity to follow the Shanghai Municipal Post and Telecommunications Authority, including the city telephone bureau, the city of computing technology and other units composed of “new telecommunications technology delegation” went to Japan access. Hosted by the Nippon Telegraph and Telephone Corps, the delegation visited Japan for research and production of optical fiber transmission communications and program-controlled electronic switching equipment. This article only briefly introduces the application of optical fiber transmission system in Japan. Japan’s communications network has begun to develop from the original analog network to digital network, in charge of the development and domestic