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光通信技术将从研究光纤的固有性质向研究光的性质,如载波(Carrier)方向发展。具体技术有:①超高速/超长距离传输技术;②光波通信技术;③光信号处理技术。实现超高速/超长距离传输技术将采用相干光传输技术,这样,接收灵敏度可提高十几dB,中继距离将达到100km。如采用光纤放大器,中继距离会增加到400km左右。在理论上,光纤放大器的中继距离为5000～10000km。目前,已制定其技术开发目标:①超高速电
Optical communication technology will be from the study of the inherent properties of optical fiber to study the nature of light, such as carrier (Carrier) direction. Specific technologies are: ① ultra-high speed / long distance transmission technology; ② optical communications technology; ③ optical signal processing technology. Achieve ultra-high speed / long distance transmission technology will use coherent optical transmission technology, so that the receiving sensitivity can be increased ten dB, the relay distance will reach 100km. If using fiber amplifier, the relay distance will be increased to 400km or so. In theory, the optical fiber amplifier relay distance of 5000 ~ 10000km. Currently, it has developed its technology development objectives: ① ultra-high speed power