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    Optical one-to-one protection switching apparatus
    2.
    发明授权
    Optical one-to-one protection switching apparatus 失效
    光一对一保护倒换装置

    公开(公告)号：US06975811B1

    公开(公告)日：2005-12-13

    申请号：US09650506

    申请日：2000-08-29

    申请人： Sunao Kakizaki ,  Hideaki Tsushima ,  Takashi Mori ,  Masahiro Takatori ,  Yukio Hayashi ,  Shinichi Kuwano

    发明人： Sunao Kakizaki ,  Hideaki Tsushima ,  Takashi Mori ,  Masahiro Takatori ,  Yukio Hayashi ,  Shinichi Kuwano

    IPC分类号： H04B10/03 ,  H04B10/07 ,  H04B10/077 ,  H04L1/22 ,  H04Q11/00 ,  H04B10/00

    CPC分类号： H04Q11/0062 ,  H04Q2011/0043 ,  H04Q2011/0081

    摘要： An optical one-to-one protection switching apparatus exchanges signals between a transmit node and a receive node. If a fault is detected in the first transmission line (down-stream), a controller in the node controls a drive circuit so as to shut off a gate. Then, the controller in the transmit node upon receiving a switching request from the receive node, controls the drive circuit so as to shut off the gate. Thereby, the optical switch is switched. The transmitter of the client terminal is thus connected to the second transmission line (down-stream). Upon receiving the switching request from the transmit node, the optical switch in the receive node is switched. Thereby the receiver in the client terminal is connected to the second transmission line (down-stream).

    摘要翻译： 光学一对一保护倒换装置在发射节点和接收节点之间交换信号。 如果在第一传输线（下行）中检测到故障，节点中的控制器控制驱动电路以便关闭门。 然后，当从接收节点接收到切换请求时，发送节点中的控制器控制驱动电路以关闭门。 由此，切换光开关。 因此，客户终端的发射机连接到第二传输线（下行）。 在从发送节点接收到切换请求时，切换接收节点中的光开关。 因此，客户终端中的接收机连接到第二传输线（下行）。

    Optical signal switching apparatus
    3.
    发明授权
    Optical signal switching apparatus 有权

    公开(公告)号：US06434286B1

    公开(公告)日：2002-08-13

    申请号：US09772083

    申请日：2001-01-30

    申请人： Yukio Hayashi ,  Sunao Kakizaki ,  Hideaki Tsushima ,  Shinichi Kuwano

    发明人： Yukio Hayashi ,  Sunao Kakizaki ,  Hideaki Tsushima ,  Shinichi Kuwano

    IPC分类号： G02B626

    摘要： Variable (coupling ratio) optical couplers 3-0 and 6-0 each have ports of two inputs and two outputs, and the coupling ratio of inputted light is variably controlled by drive circuits 4-1 and 7-1. In the optical 1+1 switching structure, the coupling ratio of the variable (coupling ratio) optical coupler 3-0 is controlled to be 50%:50%. The variable (coupling ratio) optical coupler 6-0 is controlled to have the coupling ratio of 100%:0% or 0%:100%. In the optical 1:1 switching structure, the coupling ratios of the variable (coupling ratio) optical couplers 3-0 and 6-0 are controlled to be 100%:0% or 0%:100%. When a performance monitor (0) 9-0 detects signal degradation, signal interruption, and the like, the system controller 1-0 sends an instruction signal and the control circuits 20-0 and 21-0 output control signals for controlling coupling ratios of the variable (coupling ratio) optical couplers 3-0 and 6-0, respectively.

    Optical signal switching apparatus
    4.
    发明授权
    Optical signal switching apparatus 失效
    光信号切换装置

    公开(公告)号：US06334009B1

    公开(公告)日：2001-12-25

    申请号：US09680446

    申请日：2000-10-06

    申请人： Yasuyuki Fukashiro ,  Shinichi Kuwano ,  Kenji Yamahara ,  Yukio Hayashi ,  Hideaki Tsushima

    发明人： Yasuyuki Fukashiro ,  Shinichi Kuwano ,  Kenji Yamahara ,  Yukio Hayashi ,  Hideaki Tsushima

    IPC分类号： G02B635

    CPC分类号： H04Q11/0005 ,  G02B6/357 ,  G02B6/358 ,  G02F1/0121 ,  H04Q2011/0039 ,  H04Q2011/0049 ,  H04Q2011/0083

    摘要： An optical signal switching apparatus that maintains an optical switch to a specified state even when noise is generated during the turning on and/or off of power to an optical switch control unit which controls the optical switch. The optical switch control unit includes an optical switch driving unit, a power supply and a power supply surveillance unit. When a specified condition of the power supply is not satisfied, a control signal is generated by the power supply surveillance unit. Upon detection of the control signal the optical switch driving unit, fixes the state of the optical switch to a previously set state without regard to the input to the optical switch driving unit.

    摘要翻译： 即使在对控制光开关的光开关控制单元的接通和/或断电时产生噪声的情况下，光信号切换装置将光开关保持在指定状态。 光开关控制单元包括光开关驱动单元，电源和电源监视单元。 当不满足电源的指定条件时，由电源监视单元产生控制信号。 当检测到控制信号时，光开关驱动单元将光开关的状态固定在预先设定的状态，而不用考虑到光开关驱动单元的输入。