On the required number of WDM channels when assessing performance of 100Gb/s coherent PDM-QPSK overlaying legacy systems
20 September 2009
We experimentally analyze WDM nonlinear impairments brought by co-propagating 10 Gb/s NRZ channels onto a 100 Gb/s PDM-QPSK channel. The PDM-QPSK channel can experience strong nonlinear interactions even from co-propagating channels located far away in the multiplex.