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We propose and experimentally demonstrate a 3.5-bits/symbol/polarization 12QAMo modulation format. This new format is shown to out-perform both 8QAM and 16QAM formats in 200G transmissions over 15×80 km of SSMF impaired by cascaded WSS filtering.
We propose a novel carrier-assisted dual-polarization (CA-DP) modulation system with Stokes vector direct detection (SV-DD). Results show that 192-Gb/s DP-16QAM-OFDM signal can be received after 160-km using the proposed scheme with BER below 7% HD-FEC.
We investigate performances of two digital methods for suppression of clock tone leakages of an 80GS/s high-speed DAC supporting single-carrier 400G. A novel clock leakage mitigation technique is experimentally demonstrated for the first time.
Employing 8-bit 65GSps digital-to-analog converters with pre-equalization and Nyquist pulse-shaping, we generated a terabit superchannel based on both low-baud-rate Nyquist frequency-division-multiplexing (FDM) dual polarization quadrature-phase-shift-keying (DP-QPSK) and high-baud-rate Nyquist DP-QPSK signals. The 1.2-Tb/s superchannel transmission over 80100 km ultra-large-area fiber with...
We report experimental results comparing two-types-of terabit Nyquist-pulse-shaped superchannel transmissions. A 50-subcarrier low-baud-rate system with potential of significant DSP simplification has shown similar transmission performance compared with a 10-subcarrier high-baud-rate system.
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