【摘要】 文章介绍了40Gbit/s单通道系统在G.652光纤上无电中继传输480km的实验情况。系统采用NRZ码,分布式拉曼放大器(DRA),无前向纠错(FEC)技术。系统传输480km后,MPI R点的光信噪比(OSNR)大于29dB,在误码率(BER)为10-12时,接收机的最小接收功率可达到-22.3dBm。连续观察12h无误码。更多还原

【Abstract】 40 Gbit/s single channel system transmission over 480 km of G.652 fiber without electronic regeneration is introduced in the paper. In this work ,we employ NRZ format ,distributed Raman amplification（DRA）. No FEC technology is used in the system. After transmission over 480 km, the OSNR of MPI-R is more than 29 dB,the sensitivity of receiver is about -22.3 dBm at BER=10^-12.The system has run error free continuously for 12 hours.更多还原