Home Forums SYSTEM Coherent optical receiver

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    • #24661
      Dr. Dhiman Kakati
      Participant

      How to make a coherent optical receiver having 2 input ports and 1 output ports. The modulation technique use in the paper is QAM.

    • #24663
      Ashu verma
      Participant

      Hi Dhiman,Mai i know for which scheme you are using coherent detection.If you are using the qam only the there is qam demodulator after photo detectors which gives you one output.If you are using QAM for example as in OFDM then you can get the idea from optisystem ofdm samples
      Advanced modulation > ofdm samples
      Rest for better information here attach paper or sample file you made so far .Thank you

    • #24665
      Dr. Dhiman Kakati
      Participant

      I have attached the snapshot of the schematic. please go through.

      Thanks

    • #24688
      alistu
      Participant

      Hi Dhiman,

      Again this is the case I have explained earlier in your post “photodiode”, in the link below:

      Photodiode

      In case you are using 4-QAM, then you have two inputs to your QAM demodulator (or 4-QAM), whereas in the image you have attached there is only one output port to your coherent optical receiver, which enters QADM.

      Regards

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