前言 光纤通信,由于其损耗低、容量大、传输速率高、不受电磁波干扰、保密性能好、重量轻、体积小等优异特性,发展速度相当快。它将为21世纪的世界经济及人类生活带来极大的影响。 近几年来,全球国际性的海底光缆大量铺设,许多工业先进国家的网络呈光纤化的趋势。预计,光纤通信将是未来通信的一大主流。 21世纪将迈入宽频整体服务数字网络,光纤通信带给人类社会的经济效益,不仅仅是巨额的产值。大量快速的资料传输、多媒体的服务品质,对发展整个社会生 Foreword Optical fiber communications, due to its low loss, large capacity, high transmission rate, free from electromagnetic interference, confidentiality performance, light weight, small size and other excellent features, the development speed is very fast. It will have a tremendous impact on the world economy and human life in the 21st century. In recent years, a large number of international submarine optical cables have been laid, and many industrial advanced countries have become fiber-optic networks. It is expected that optical fiber communications will be a major stream of future communications. In the 21st century, we will enter the digital broadband network as a whole, and the optical fiber communications will bring economic benefits to the human society, not just a huge amount of output. A large number of rapid data transmission, multimedia service quality, the development of the entire social life