Problem with BER Analyzer, not compute BER

[Luis Vallejo]

Hello,

I use to have this problem many times…
I have made a basic scheme: laser, MZM and PD. I want to measure the BER and I use BER analyzer. Everything works ok, I can see the electrical signal on the oscilloscope and the eye diagram. However, the Min. BER is not computed well.. and, of course, the Q factor.
Does anyone know why happens?
I attach my project.

Best regards,

Luis

[Ahmad Atieh]

Hello Luis,
I see the captured eye is shifted a bit from center. However, you should get very good BER.
Could you please send me your project as a zip file to ahmad.atieh@optiwave.com? I’ll check what the issue is.
Meanwhile, you can use set the BER Analyzer parameters by right click on the visualizer and access its properties.
Regards,
Ahmad

[Author]

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