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We analyze how the 50 GHz WSS port isolation spectral profile impairs the performance of 43 Gb/s NRZ-ADPSK wavelengths and find that >10 dB of isolation is needed at the center of the channel relative to the edges.
We investigate the nonlinear robustness of 43-Gb/s NRZ-PDPSK WDM transmission in SMF and NZDSF links with narrow optical filtering introduced by cascaded 50-GHz wavelength-selective switches.
The sensitivity of tightly filtered duobinary and conventional nonreturn-to zero on-off-keyed (NRZ-OOK) signals to second-order polarization-mode dispersion (SO-PMD) is assessed through extensive numerical simulations. On average, duobinary signals are significantly more sensitive to SO-PMD than to ordinary fiber chromatic dispersion (CD), whereas NRZ-OOK signals are more tolerant to SO-PMD than to...
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