公开(公告)号：US06771907B1

公开(公告)日：2004-08-03

申请号：US09576240

申请日：2000-05-24

申请人： Yuuki Yoshifuji ,  Shuichi Iida ,  Takashi Yamazaki ,  Youko Nakabayashi ,  Shinya Nakamura ,  Kimio Ozawa ,  Naoki Ando ,  Hitoshi Kikuchi ,  Tukasa Haga ,  Hiromitu Watanabe ,  Minoru Shinta ,  Hitoshi Takeshita ,  Shinobu Sasaki ,  Ryou Yamada ,  Naoya Henmi

发明人： Yuuki Yoshifuji ,  Shuichi Iida ,  Takashi Yamazaki ,  Youko Nakabayashi ,  Shinya Nakamura ,  Kimio Ozawa ,  Naoki Ando ,  Hitoshi Kikuchi ,  Tukasa Haga ,  Hiromitu Watanabe ,  Minoru Shinta ,  Hitoshi Takeshita ,  Shinobu Sasaki ,  Ryou Yamada ,  Naoya Henmi

IPC分类号： H04J1400

CPC分类号： H04J14/0295 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283

摘要： An optical ring system having: a wavelength demultiplexer to which wavelength-multiplexed optical signal to be sent through an optical fiber from a previous node of multiple nodes is input and in which optical signal with each wavelength assigned to itself is demultiplexed; an optical ring device which is disposed in a predetermined node of the multiple nodes to the each wavelength assigned and which is composed of a failure existence judging part which terminates an overhead of each optical signal with a wavelength demultiplexed by the wavelength demultiplexer and judges whether a failure occurs in regard to a wavelength in a previous section through which optical signal with the assigned wavelength is sent, and a switching part which, when the failure existence judging means determines the occurrence of failure, selects a path that allows optical signal with the wavelength to be transmitted to the previous node while avoiding the previous section incurring the failure; and a wavelength multiplexer which multiplexes optical signal to be output from the optical ring part and then outputs it to an optical fiber connected to a next node.

摘要翻译： 一种光环系统，具有波长解复用器，通过来自多个节点的先前节点的光纤输入波分复用光信号，其中分配有每个波长的光信号被解复用; 光环设备，被布置在多个节点的预定节点到分配的每个波长，并且由故障存在判断部分组成，故障存在判断部分终止由波长解复用器解复用的波长的每个光信号的开销，并判断是否 关于发送了具有指定波长的光信号的先前部分中的波长发生故障，以及当故障存在判断装置确定故障发生时，选择允许具有波长的光信号的路径的切换部分 被发送到上一个节点，同时避免前一个部分发生故障; 以及多路复用从光环部分输出的光信号，然后将其输出到连接到下一个节点的光纤。