In this paper,OC12/STM4 recieving/transmission chips group which is used to enhance the transmission ablity of fiber,and the O/E transformation components in SDH/SONET fiber systems are presented.

• 介绍了提高光纤传输能力的 OC1 2 /STM4接收 /发送芯片组 ,及 SDH/SONET光纤系统中光电转换部件。