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Ashu verma
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Hi! gagan,I have analyzed your attached file very carefully.I have some doubts regarding this.Best way to get help is by attaching the paper you are working on.Since you have launched 0 dB ,your fiber length is 120 km and after that you attached a dcf .Now after travelling this much distance ,you signal power come out to be -70dB .which is very less and after that you have used Raman amplifier.No doubt OSNR is good but i am confused in your co propagating pomp power which is very high and fed to HNLF .I didnt get your system actully ,and at receiver side you may add electrical bassel filter after pin.kindly attach paper

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