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US07805072B2 Wavelength division multiplex optical ring network for transmitting protected signals by local state switching following local interruption detection 有权
波分复用光环网，用于通过本地中断检测后的本地状态切换发送受保护信号

Wavelength division multiplex optical ring network for transmitting protected signals by local state switching following local interruption detection
Abstract:
Wavelength division multiplex ring communication network equipment comprises a first multiplexer connected to a first optical fiber portion dedicated to transporting multiplexed signals and a second multiplexer connected to a second optical fiber portion. The equipment comprises signal protection circuitry connected to the first and second multiplexers and to a terminal which, in the event of local detection of interruption of signal transmission at a first wavelength on the first optical fiber portion, send the signals coming from the terminal to the second multiplexer at a second wavelength so that it communicates them to the second optical fiber portion, and sends to the terminal the signals that are addressed to it and that come from the second optical fiber portion at the second wavelength.
Abstract(Chinese):

波分复用环通信网络设备包括连接到专用于传输复用信号的第一光纤部分的第一多路复用器和连接到第二光纤部分的第二多路复用器。 该设备包括连接到第一和第二多路复用器的信号保护电路和终端，在本地检测到第一光纤部分处的第一波长的信号传输中断的情况下，将从终端发送的信号发送到 第二多路复用器，以使其与第二光纤部分通信，并将第二光纤部分的信号发送给终端，并且来自第二光纤部分的信号。

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