In-service upgrade method for DWDM submarine cable system using ASE dummy lights

@article{Inoue2004InserviceUM,
  title={In-service upgrade method for DWDM submarine cable system using ASE dummy lights},
  author={Takashi Inoue and E. Shibano and Hidenori Taga and Koji Goto},
  journal={Optical Fiber Communication Conference, 2004. OFC 2004},
  year={2004},
  volume={1},
  pages={202-}
}
We propose the in-service upgrade method with ASE dummy lights. Two key technologies, appropriate arrangement of ASE dummy lights and overlap replacement of dummies, can minimize the performance fluctuation of the existing signals in upgrading. 

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