Noise Power Measurement in Optical PowerMeter - Optiwave

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This topic has 1 reply, 2 voices, and was last updated 5 years, 8 months ago by Ahmad Atieh.

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- March 28, 2019 at 6:45 am #50889
  
  RAMON GUTIERREZ CASTREJON
  Participant
  
  Hi guys
  
  The Optical Power Meter module in OptiSystem shows the power of a sampled signal and the power of the noise. It is clear how the former is calculated. However, can anybody help me telling me how the Noise Power is calculated (I assume) from the noise bins in the Optical Power Meter module? I am trying to match the values shown by the Optical Power Meter module with those I calculate from the corresponding signal after being downloaded to Matlab.
  
  Thank you very much in advance.
  
  Ramon
- March 28, 2019 at 12:46 pm #50940
  
  Ahmad Atieh
  Moderator
  
  Hello Ramon,
  The power meter measures average power. However, OSA measure power spectral density (PSD). So, the noise bins have PSD data, which needs to be multiplied by the noise bin bandwidth and averaged out over the total bandwidth to get same power measured by the power meter. The noise bandwidth parameter can be read from the attached image.
  Please try the calculation, if you have not manage to get correct answer, please contact me at ahmad.atieh@optiwave.com for further discussions.
  Regards,
  Ahmad
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