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Q value Description

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(joined March 2014)
Participant

Hi,
The Q value obtained in BER Analyzer block is in dB or linear?
In OptSim Q is in both dB and linear how can i compare Q values obtained from OptiSystem with same corresponding layout in OptSim software.

Responses (5):

    • #10119
      Profile Photo

      Hi,
      The Q value obtained in BER Analyzer block is in dB or linear?
      In OptSim Q is in both dB and linear how can i compare Q values obtained from OptiSystem with same corresponding layout in OptSim software.

    • #10127
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      Tech Support
      Participant

      The calculated Q-factor values in OptiSystem are linear.

      +2
    • #33119
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      Jojo Mathew
      Participant

      Hello Siva rama krishna, Tech Support is right in saying that the Q-values obtained fro the optisystem are linear. If you are interested in taking the Q-values in dB then kindly apply the log units and convert them into dB.
      Regards.

      +1
    • #33120
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      SAHIL SINGH
      Participant

      Hi Siva Rama Krishna,

      As far as the calculated Q-factor values in OptiSystem are concerned,they are linear.. But i really dont know how to compare Q values obtained from OptiSystem with same corresponding layout in OptSim software…

      Regards

      Sahil Singh

    • #33136
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      MHD NA
      Participant

      he Q-values obtained fro the optisystem are linear. If you are interested in taking the Q-values in dB then kindly apply the log units and convert them into dB.

    • #33174
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      Ranjeet Kumar
      Participant

      Hi fayiqa ma’m
      In physics and engineering the quality factor or Q factor is a dimensionless parameter. The higher the Q, the narrower and ‘sharper’ the peak is. In many design we plot Q-factor and min. BER against input power in dbm.

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