Hello Jagan,
the results of the BER analyser can be accessed using right click on the component, then select “Component Results”. Then you can accessed all possible results of the visualizer. The BER value can be absolute or in dB. The min BER value depends on the modulation and rate. Typically for 10G system the min BER is 1E-12. However, if you use FEC or ultra FEC you could tolerate 1E-3 or 1E-2, respectively.
You can use BER Analyzer with advanced modulation, you need to set it up correctly.
Which OptiSystem version do you use?
Regards,
Ahmad