This paper is an introduction of high speed optical communication systems used in China, especially those deployed by the Ministry of Post and Telecommunication.
Practical high speed systems, such as 565 Mb/s system and the optical devices used in these systems manufactured in China are described.
Further development of high speed systems and devices such as SDH systems at 622 Mb/s and 2.5 Gb/s, EDFA, MQW laser diodes and a comprehensive test bed are discussed.