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    • 2. 发明授权
    • Two-fiber optical shared protection ring with a bi-directional 4×4 optical switch fabric
    • 双光纤共享保护环,双向4x4光交换机
    • US06771852B2
    • 2004-08-03
    • US10117598
    • 2002-04-05
    • Roe HemenwayIzudin LelicMing-Jun LiMark J. SoulliereDaniel J. TebbenXuxing Zhao
    • Roe HemenwayIzudin LelicMing-Jun LiMark J. SoulliereDaniel J. TebbenXuxing Zhao
    • G02B628
    • H04J14/0295H04J14/0201H04J14/0283H04J14/0291
    • The present invention is directed to a protection switch for use in a node of a two-fiber optical shared protection ring. The two-fiber optical shared protection ring propagates at least one bi-directional channel. Each bi-directional channel includes a working first wavelength signal and a working second wavelength signal. One fiber in the two-fiber optical channel shared protection ring propagates the working first wavelength signal in a first direction and the other fiber in the two-fiber optical channel shared protection ring propagating the working second wavelength signal in a second direction opposite the first direction. The switch includes an N×N optical switch fabric system disposed in the node. The N×N optical switch fabric includes 2N input/output (I/O) ports, wherein N is four, or an integer multiple of four. Each optical switch fabric is configured to switch at least one bi-directional channel. At least N three-port optical devices are coupled to N of the I/O ports. Each three-port optical device includes a bi-directional port coupled to an I/O port. The bi-directional port is configured to propagate the at least one bi-directional channel.
    • 本发明涉及一种用于双光纤共享保护环的节点中的保护开关。 双光纤共享保护环传播至少一个双向通道。 每个双向通道包括工作的第一波长信号和工作的第二波长信号。 双纤维光通道共享保护环中的一个光纤在第一方向上传播工作的第一波长信号,而双纤维光通道共用保护环中的另一个光纤在与第一方向相反的第二方向上传播工作的第二波长信号 。 交换机包括设置在节点中的NxN光交换机系统。 NxN光交换结构包括2N个输入/输出(I / O)端口,其中N为4,或4的整数倍。 每个光交换结构被配置成切换至少一个双向信道。 至少N个三端口光学设备耦合到N个I / O端口。 每个三端口光学设备包括耦合到I / O端口的双向端口。 双向端口被配置为传播至少一个双向信道。