Hi Damian
i can’t figure where is the different in frequency between first 1:12 WDM Demux and first 3:1 WDM MUx
Frequency[0] 1555.6
Frequency[1] 1556.2 in first WDM Demux
Frequency[2] 1557.8
in WDM MUX Frequency[0] 1555.6
Frequency[1] 1556.2
Frequency[2] 1557.8
the same thing at receiver side.