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    • 8. 发明授权
    • Dispersion compensation device, optical reception device, method for dispersion compensation, and method for optical reception
    • 色散补偿装置,光接收装置,色散补偿方法和光接收方法
    • US08326160B2
    • 2012-12-04
    • US12951643
    • 2010-11-22
    • Makoto MurakamiToshihiro Ohtani
    • Makoto MurakamiToshihiro Ohtani
    • H04B10/06H04B10/00H04B10/12H04J14/02
    • H04B10/25133H04B2210/252
    • A dispersion compensation device includes: an optical branching unit to branch an optical signal to be received; a first dispersion compensator to perform dispersion compensation on one part of the optical signal branched by the optical branching unit with a variable compensation amount; a second dispersion compensator to perform dispersion compensation on another part of the optical signal branched by the optical branching unit; a monitoring unit to monitor the communication quality of an output optical signal of the second dispersion compensator; and a controlling unit to determine the direction of variation in chromatic dispersion of the optical signal based on the direction of variation in communication quality monitored by the monitoring unit and control the compensation amount of the first dispersion compensator based on the result of the determination.
    • 色散补偿装置包括:光分支单元,用于分支待接收的光信号; 第一色散补偿器,对具有可变补偿量的光分支单元分支的光信号的一部分进行色散补偿; 第二色散补偿器,对由光分支单元分支的光信号的另一部分进行色散补偿; 监视单元,用于监视第二色散补偿器的输出光信号的通信质量; 以及控制单元,其基于由所述监视单元监视的通信质量的变化方向来确定所述光信号的色散的变化方向,并且基于所述确定的结果来控制所述第一色散补偿器的补偿量。