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We report the measured WDM performance of a real-time 120 Gbps coherent PM-QPSK MSA transceiver with industry-first integrated ADC, DSP and SD-FEC in a 40nm CMOS ASIC. We also evaluate MPI induced OSNR penalty.
We report the successful transmission of 64 Tb/s capacity (640 ×107 Gb/s with 12.5 GHz channel spacing) over 320 km reach utilizing 8-THz of spectrum in the C+L -bands at a net spectral efficiency of 8 bit/s/Hz. Such a result is accomplished by the use of raised-cosine pulse-shaped PDM-36QAM modulation, intradyne detection, both pre- and post-transmission digital equalization, and ultra-large-area...
We report continuous, multiple-day measurements of polarization-dependent loss (PDL) of several C-band channels on an installed 1800-km terrestrial link. The PDL varies on a time-scale of hours, and the PDL of adjacent channels often track.
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