实时光纤网络中突发数据传输的物理层设计  

Design and Implementation of Optical Burst Transceivers For a Real-Time Ethernet Optical Network (REPON)

作　　者：千应庆[1] 刘元丰[1] 劳力[1] 

机构地区：[1]上海电控研究所科技部,上海200092

出　　处：《测控技术》2010年第12期74-77,81,共5页Measurement & Control Technology

摘　　要：使用Altera CycloneⅢFPGA设计了百兆实时光纤网络物理层,解决了百兆光纤网络突发数据通信中的数据突发发送、数据时钟的恢复及接收的关键技术。利用空间过采样技术避开了光通信中用于相位锁定、时钟恢复所需的等待时间,直接从码流中提取数据,从而减少了网络突发数据包的同步码开销,提高了光网络的带宽利用率。A 100M/s real-time optical network physical layer is designed and implemented in Altera_CycloneⅢ FPGA to solve optical burst transmission and clock data recovery issue.This circuit implementation and simulation show that the burst-transmission controller driver circuit of laser device can operate correctly optical network burst emission,the spatial oversampling recovery technology can pick-up data directly from receiving code-stream,can eliminate the waiting time needed by phase lock and clock recovery,which reduces preamble overhead in burst package head and improves optical network bandwidth utility.

关 键 词：光突发数据通信 空间过采样 百兆实时光纤网络 

分 类 号：TN915.851[电子电信—通信与信息系统]