公开(公告)号：US06590681B1

公开(公告)日：2003-07-08

申请号：US09328385

申请日：1999-06-09

申请人： Lars Egnell ,  Bengt Johansson ,  Robert Batchellor ,  Nigel Wood ,  Magnus Öberg

发明人： Lars Egnell ,  Bengt Johansson ,  Robert Batchellor ,  Nigel Wood ,  Magnus Öberg

IPC分类号： H04J1402

CPC分类号： H04Q11/0062 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0213 ,  H04J14/0283 ,  H04J14/0295 ,  H04Q11/0005 ,  H04Q2011/0009 ,  H04Q2011/0016 ,  H04Q2011/0075 ,  H04Q2011/0081

摘要： An optical fiber network of WDM type comprises two fibers which carry light signals propagating in opposite directions and which are arranged in a ring configuration. One standby link between two neighboring nodes is inactive but is made active if an active link fails. An add and drop node used in the network has band blocking filters connected in a fiber between a drop coupler and an add coupler, taking out a share of the light power in each direction to be received through bandpass filters in receivers and adding new wavelength channels produced in transmitters, respectively. Switches are used for receiving and transmitting on the wavelength channels in correct directions. The positions of the switches can be changed when the inactive link has to become one of the two active links directly connected to the node. A very efficient use of the wavelength channels in the network can then be achieved for nodes having a minimum of in-line components, and particularly, a minimum of in-line filtering components.

摘要翻译： WDM型光纤网络包括两个光纤，其携带沿相反方向传播的光信号，其布置成环形结构。 两个相邻节点之间的一个备用链路处于非活动状态，但如果主动链路发生故障，则其将被激活。 在网络中使用的添加和分出节点具有连接在光耦合器和加法耦合器之间的光纤中的带阻滤波器，在接收机中通过带通滤波器在每个方向上取出光功率的份额并添加新的波长信道 分别在发射机中产生。 开关用于在正确的方向上在波长通道上进行接收和发送。 当非活动链路必须成为直接连接到节点的两个活动链路之一时，可以改变交换机的位置。 然后可以对具有最小的在线组件的特别是最小的在线过滤组件的节点实现网络中波长信道的非常有效的使用。

公开(公告)号：US06731597B1

公开(公告)日：2004-05-04

申请号：US09462414

申请日：2000-04-28

申请人： Robert Batchellor ,  Lars Egnell ,  Bengt Johansson

发明人： Robert Batchellor ,  Lars Egnell ,  Bengt Johansson

IPC分类号： H04L100

CPC分类号： H04J14/0293 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0286 ,  H04J14/0289 ,  H04J14/0297 ,  H04L12/4637

摘要： A system and a method for maintaining operation of a signaling interconnection between a first ring network and a separate second ring network. Each ring network comprises two communication paths transmitting data in opposite directions and at least two nodes connected to both communication paths. The networks are interconnected via two adjacent gateways, which receive data from the two communication paths on one network, and transmit the data onto the other network directed away from the other gateway. Data traffic is stopped in both directions in an inactive segment on each ring network, so that a node situated on a ring network receives traffic from only one of the two gateways.

摘要翻译： 一种用于维持第一环网和单独的第二环网之间的信令互连操作的系统和方法。 每个环网包括两个通信路径，它们在相反方向上发送数据，并且至少两个节点连接到两个通信路径。 网络通过两个相邻的网关相互连接，这些网关从一个网络上的两个通信路径接收数据，并将数据发送到远离另一个网关的另一个网络上。 数据业务在每个环网上的非活动段中在两个方向上停止，使得位于环网上的节点仅从两个网关之一接收业务。