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This topic has 2 replies, 2 voices, and was last updated 1 year, 1 month ago by Murtadha Baji Eidan.

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- October 23, 2023 at 7:14 am #84896
  Murtadha Baji Eidan
  Participant
  Hi, i’m working on design FSO Channel using optisystem 21.
  as shown in the screenshot, the optical power meter measures an output power from the channel higher than the transmitter launch power!
  the power of CW laser is 6mW while channel output is 21mW
  is there any problem?
  - This topic was modified 1 year, 1 month ago by Ahmad Atieh.
- October 24, 2023 at 7:24 am #84900
  
  Ahmad Atieh
  Moderator
  
  Hello Murtadha,
  the reason is related to your choice of the TX and RX diameters in addition to the divergence angle and range. If you check equation 1 in the FSO Channel component datasheet there is a term relates all of these parameters that could give you gain or loss to the signal depending on the setup parameters. If the issue is still not clear please email me at ahmad.atieh@optiwave.com and I’ll provide more details.
  Regards,
  Ahmad
  - October 24, 2023 at 12:42 pm #84901
    
    Murtadha Baji Eidan
    Participant
    
    I also have another problem, when i run the model and try to Achieve BER and SNR through BER Analyzer and Electrical carrier Analyzer, the results are incorrect and out of order, is it design problem or wrong tools?
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