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dp-qpsk in wdm with spectrum efficiency >1 or >2

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(joined March 2015)
Participant

made this osd… problem in getting correct constellation diagram for qpsk.. also ber test not showing error…
please help in improvising urgently…

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    • #19107
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      Shivam Anand
      Participant

      made this osd… problem in getting correct constellation diagram for qpsk.. also ber test not showing error…
      please help in improvising urgently…

      Attachments:
    • #19198
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      Damian Marek
      Participant

      Your two transmitters contain approximately 40 GHz of bandwidth but they are separated by only 25 GHz of channel spacing. They are intefering with each other.

      Regards

      +1

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