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PDM-QPSK

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(joined October 2014)
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I am trying to design PDM-QPSK in optisystem v11.
Can any one help me to design that system?
Please show me the circuit for that..

Responses (16):

    • #15615
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      Monika
      Participant

      I am trying to design PDM-QPSK in optisystem v11.
      Can any one help me to design that system?
      Please show me the circuit for that..

    • #15623
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      you can refer this paper
      “Influence of Pulse Shape in 112-Gb/s WDM PDM-QPSK Transmission”

      Attachments:
    • #15626
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      Ravil
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      Here you can find its features and comparison with other modulation formats:

    • #15627
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      Ravil
      Participant

      attached file here…

      Attachments:
    • #15653
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      Monika
      Participant

      I am working in optisystem v11. And pulse carver, DFB and EC-LT are not given in that version. In this case what I should do?

    • #15656
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      Abdallah Ismail
      Participant

      I downloaded the design from Optiwave site.
      Please check osd and m files.
      also i have many designs in optiwave examples but i don’t now it’ll be opened by 11 version because it made for version 13.
      You can check optisystem>files>Examples>Advanced Modulation systems>psk Systems>QPSK

    • #15662
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      Details of pulse carving can found on this link
      <a href=”http://optiwave.com/forums/topic/generation-of-rz-dqpsk-modulation-for-different-duty-cycles/&#8221; target=”_blank”></a>

      +1
    • #15669
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      Monika
      Participant

      @Abdallah- can u please send me the image or screenshot of this osd or m file?

    • #15670
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      Monika
      Participant

      Plz give me an idea to design 90° optical hybrid.

    • #15678
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      Ravil
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      Are you able to use MLL with short pulses or your bit rate is too high for that?

    • #15679
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      Ravil
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      Here is the scheme I used for DQPSK. You can see 90 deg. phase produced by local generator (at the transmitter) and couplers are used at the receiver. I don’t have scheme in v11, sorry.

      Attachments:
      +1
    • #15691
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      Monika
      Participant

      @ Ravil- thanks alot..but i want to use 90° optical hybrid at the rx. Or u have made pdm-qpsk system then plz upload pic for that.

      • #16368
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        Damian Marek
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        Here is a brief explanation of the component in detail attached.

        Attachments:
    • #15923
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      Heitor Galvao
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    • #17543
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      Monika
      Participant

      @Heitor- Thanks alot!!

    • #17544
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      Monika
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      for M.Tech Thesis what work can be done based on this paper..please suggest me.
      i have attached my paper here.

      Attachments:

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