1966年理论上证明了“光导纤维长距离传输光波的可能性”、1970年拉制成功低损耗通信用光纤。从此,光通信所面临的两大难题都解决了,也就迎来了光通信发展的高峰期。90年代,光通信开始大规模应用,在通信历史上引起了划时代的变化。 In 1966, it was theoretically proved that “the possibility of optical fiber transmitting light waves over long distances”, and in 1970 succeeded in drawing low-loss optical fibers for communications. Since then, the two major challenges facing optical communications have been solved, which ushered in the peak of optical communications development. In the 90s, optical communications began to be applied on a large scale, arousing epoch-making changes in the history of communications.