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    • 10. 发明授权
    • Optical level control method
    • 光学水平控制方法
    • US06937820B2
    • 2005-08-30
    • US09791915
    • 2001-02-26
    • Hiroyuki IwakiTetsuo Wada
    • Hiroyuki IwakiTetsuo Wada
    • H04B10/00H04B10/03H04B10/07H04B10/077H04B10/079H04B10/29H04B10/294H04B10/297H04B17/40H04J14/00H04J14/02H04L29/14
    • H04B10/2918H04B10/03H04B10/0777H04B2210/078H04B2210/08H04J14/0221
    • The present invention relates to an optical level control method for use in an optical transmission system. In the system, a WDM terminal comprises a multiplexing/demultiplexing unit, an amplifier, an up-direction OSC light transmitting/receiving unit, an up-direction multiplexer, an up-direction branching unit, an amplifier and an APR control unit, and a repeater comprises an up-direction branching unit, an OSC light transmitting/receiving unit, an amplifier, an up-direction multiplexer, a down-direction branching unit, an amplifier, a down-direction multiplexer and an APR control unit. In this configuration, a flexible optical output level control in connection with variation in WDM light level, a selective value irrespective of occurrence of an error stemming from the passage of time and avoidable malfunctions are respectively capable. In addition, a trouble retrieving operator can eliminate the possibility of being exposed to the WDM light.
    • 本发明涉及光传输系统中使用的光学级别控制方法。 在该系统中,WDM终端包括复用/解复用单元,放大器,上行OSC光发送/接收单元,上行多路复用器,上行分支单元,放大器和APR控制单元,以及 中继器包括上行分支单元,OSC光发射/接收单元,放大器,上行多路复用器,下行分路单元,放大器,下行多路复用器和APR控制单元。 在这种配置中,可以分别与WDM光水平的变化相关的灵活的光输出电平控制,不管由于时间的流逝和可避免的故障是否发生错误的选择值。 此外,故障检索操作员可以消除暴露于WDM光的可能性。