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    • 9. 发明专利
    • Wavelength division multiplexing optical communication system and a wavelength-multiplexed optical communication method
    • 空值
    • JP4671478B2
    • 2011-04-20
    • JP2000240136
    • 2000-08-08
    • 富士通株式会社
    • 剛 坂本俊和 植木太 泉
    • H04B10/07H04B3/04H04B10/077H04B10/2507H04B10/2513H04B10/255H04B10/2569H04B10/294H04B10/297H04B17/00H04J14/00H04J14/02
    • H04B10/2916H04B10/0775H04B10/25137H04B10/2569H04B2210/072H04J14/0221H04J14/0298
    • The object of the present invention is to provide a WDM optical communication system and a WDM communication method wherein deviation of transmission characteristics of optical signals of respective wavelengths is reliably controlled, based on reception information such as the OSNR, BER and the like measured at the receiving end, thereby enabling optimal transmission conditions to be realized. For this purpose, the present WDM optical communication system transmits WDM signal light of wavelengths lambda 1 ~lambdan, which has been generated by the transmitting end of one terminal station, to the receiving end of the other terminal station through an optical transmission path. At the receiving end, the OSNR and BER of the optical signals of wavelengths lambda 1 ~lambdan are measured, and the result is superimposed on overhead information transmitted along the opposing line of the optical transmission path as reception information. At the transmitting end, the settings of pre-emphasis and a parameter alpha are feedback controlled based on the reception information about each wavelength transmitted, and deviation of transmission characteristics of respective wavelengths is thus suppressed.
    • 本发明的目的是提供一种WDM光通信系统和WDM通信方法,其中基于在该波长处测量的诸如OSNR,BER等的接收信息,可靠地控制各波长的光信号的传输特性的偏差 从而实现最佳的传输条件。 为此,本发明的WDM光通信系统通过光传输路径将由一个终端的发送端生成的波长λ1〜lambdan的WDM信号光发送到另一终端的接收端。 在接收端,测量波长λ1〜lambdan的光信号的OSNR和BER,并将结果叠加在作为接收信息的沿着光传输路径的相对线传输的开销信息上。 在发送端,基于关于所发送的每个波长的接收信息反馈控制预加重和参数α的设置,从而抑制了各波长的传输特性的偏差。