Dual Polarization QPSK CO-OFDM
Hello everyone,
Please help me, my question is about Dual Polarization QPSK CO-OFDM ( 60 Gbps for each single polarization CO-OFDM):
1. After Dual Polarization QPSK CO-OFDM signal I use Optical Gaussian Filter. So, what is the optimum bandwith required for this filter ?
and why ? There is any formula may be according number fo subcarrier or anything ?
2. When for example I use 3 channels Dual Polarization QPSK CO-OFDM WDM with 50 GHz, there is interference between these channels. Why ?
what is the solution ? ” see the attached picture ”
I very need your help. Please help me. I need your help urgently.
Many thanks and best regards for all.
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