迅速发展的海底光纤通信

Rapidly Developing Submarine Optical Transmissions

近几年来,海底光纤通信进展迅速。第一代和第二代通信技术相继实用化,第三代海底光通信技术正在试验中。无中继越洋光通信仍是人们所追求的目标。

Submarine fiber optic transmissions have been advancing rapid- ly in recent years.The practical use of the technology for the first and second generations has been realized successively,while the third generation is un- der test.The repeaterless transoceanic optical transmission is still an attractive subject being pursued by a large number of researchers