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Home › Forums › SYSTEM › Error during simulation › Reply To: Error during simulation

September 8, 2015 at 10:19 am #24436
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Damian Marek
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Hi Chee,

I found that your MZMs were not biased properly at the null point. Biasing both of them at 2 and -2 for each arm results in a more linear transfer function for small electrical signals. In addition increase the samples per bit to at least 16 samples per bit.

There is still some error (and I disabled the FSO component for now) because the extinction ratio of the MZMs shifts the constellation diagram a bit. I do not know what MZMs you are limited to using but a larger extinction ratio is better. Also properly choosing the gain is important to balance the symbol separation and the distortion of the transfer function.

Try out the example attached.

Attachments:
  1. Project2-Reuploaded.osd

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