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为了适应城域网对“带宽”需求的迅速增长 ,阿尔卡特公司新近推出了城域网ＤＷＤＭ解决方案———ＭｅｔｒｏＳｐａｎ系统。该系统设计符合城域网络的特殊环境 ,其接入层产品不必要求使用昂贵的外部调制光器件。此外 ,该领域使用的惯常网络拓朴为环形或网状形配置的ＯＡＤＭ(光
In order to meet the metropolitan area network “bandwidth” the rapid growth of demand, Alcatel recently introduced metro Metro DWDM solution --- MetroSpan system. The system is designed to meet the special needs of metropolitan area networks and its access layer products do not necessarily require the use of expensive external modulated optical devices. In addition, the usual network topology used in this field is the ring-shaped or mesh-shaped OADM