Clarification regarding Penalty Extinction Ratio
When I simulate a DWDM PON architecture by increasing length from 50 to 160 km with 10 km increments. I receive following values,
Min BER Penalty Extinction Ratio Max OSNR (dB)
0 -7.00487 48.7404
0 -7.00505 48.7404
0 -7.0054 48.7404
0 -7.00604 48.7404
0 -7.00718 48.5072
0 -7.00919 48.5072
0 -7.01268 48.5072
6.165E-272 -7.01866 48.5072
3.896E-202 -7.02886 48.5072
4.744E-131 -7.04616 48.5072
1.505E-73 -7.07542 48.5072
6.742E-37 -7.12495 48.5072
I want to link the results but I am unable to understand why there is a “-ve” sign with Penalty Extinction Ratio. And how do I relate BER, PER and OSNR values. As with increasing length PER and OSNR doesn’t change much while BER is increasing. Further there is a large Penalty Extinction Ratio value for smaller channel length and small Penalty Extinction Ratio for larger lengths. How do I interpret this? Please help
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