超长跨距无中继光传输技术

探讨并分析了超长跨距中所涉及的各项关键技术,包括光源谱宽控制技术、前向纠错调制编码技术、高功率增益的EDFA功率放大技术、低噪声指数的分布式喇曼放大技术、通信线路安全及信号监控技术以及传输链路信噪比控制管理技术等。综合这些新技术,有助于大幅度提升无中继光传输距离并有效降低传输系统成本,适于在无中继跨海通信及长距离无中继专用网络等领域中配置应用。此外,还介绍了慧视公司研发的新一代超长跨距无中继光传输系统Anyhaul ULS产品的性能及应用案例。

Ultra-long span repeaterless optical transmission technology

This paper analyzes some key technologies used in ultr-long span repeaterless transmission network,which include Dispersion-Management Laser transmitter(DML),Enhanced Forward Error Correction(EFEC),Erbium-Doped Fiber Amplifier(EDFA),Distributed Raman Amplification(DRA),link security monitoring and control,Optical SNR(OSNR) control and management etc.The application of these new technologies can not only greatly prolong repeaterless transmission span and reduce the transmission costs,but also be applied to repeaterless submarine optical cable and private network.Performance and application cases of new generation Anyhaul ULS products developed by Arasor Communications Inc.are also introduced in the paper.