科学技术正在为世界人民提供比以前好得多的通信方法 ,而改革之风激起更多改变从信息到电影一切东西的希望。对通信带宽的要求正在形成技术改革的旋风。A.G.Bell在 1 880年获得光电话系统专利时 ,吹起了光通信的首阵微风 ,但事情在近一个世纪保持风平浪静。 H.Melchior在 1 977 Science and technology are providing the world’s people with much better methods of communication than ever before, and the winds of reform have sparked more hope of changing everything from information to film. The demand for communications bandwidth is shaping the whirlwind of technological change. A.G.Bell won the first breeze of optical communications when it acquired a patent for optical telephone systems in 1880, but things remained calm for nearly a century. H. Melchior at 1 977