局部网是指在几公里的局部范围内传输信息的网络。它通过共享网络资源来提高工作效率,是实现办公室自动化的一个主要途径。进入八十年代后,随着光纤通信技术和办公室自动化的迅速发展,日本用来连接办公室各种办公自动化设备的局部网开始大量使用光缆,致使网络的功能已从最初单一传输高速数据信号发展到能同时传输音频和视频信号。迄今已有相当多的光纤局部网投入了使用。本文拟通过局部网的设计要求,发展的概况和今后趋势这三个方面的阐述,来说明 Local area network refers to the transmission of information within a few kilometers of the local network. It is through the sharing of network resources to improve work efficiency, is to achieve a major office automation. Since the 1980s, with the rapid development of optical fiber communication technology and office automation, the local network used by Japan to connect various office automation equipment in the office began to make extensive use of optical fiber cables. As a result, the function of the network has been developed from the initial single transmission of high-speed data signals Can transmit audio and video signals simultaneously. To date, a considerable number of fiber optic local networks have been put into use. This article intends to illustrate the design requirements of the local network, the development of the overview and future trends of these three aspects to illustrate