The problem to be solved - Optiwave

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This topic has 1 reply, 2 voices, and was last updated 6 years ago by Mohamed A. A. Abouseif.

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- April 10, 2018 at 7:51 am #48406
  
  Jakub Lazinski
  Participant
  
  Hello,
  I would like to ask for help in solving the task using OptiSystem.
  Well, I would like to calculate the optical input power needed to obtain the probability of errors bits equal to 10e-9. Transmitter layout with binary pulse amplitude modulation at 10 Mbps. The wavelength is 1300nm, the photodiode PIN has a quantum efficiency of 0.9 (which gives R = 0.944 A / W), dark current 1nA, diode resistance 1.5MOhm. The input amplifier transfer function is independent of the frequency and its input resistance is 3MOhm, the amplifier transconductance is 5mS. Behind the amplifier there is a rectangular impulse response filter. I’m asking for help.
- April 11, 2018 at 2:23 pm #48486
  
  Mohamed A. A. Abouseif
  Participant
  
  Hi Lazinski,
  you can sweep the input power then plot BER vs input power. From this curve you can get the the value of the input power that is counterpart of the required BER!!
  
  hope that helps and works
  
  Mohamed Abouseif
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