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We proposed and demonstrated an optimized in-band optical signal-to-noise ratio (OSNR) monitoring method for polarization division multiplexed coherent optical coherent optical orthogonal frequency division multiplexing (PDM-CO-OFDM) system with CAZAC equalization and Raman amplification, and it shows satisfactory accuracy in a wide range.
We propose a quasi-single-mode transmission scheme using hybrid few-mode-fiber (FMF) and single-mode-fiber (SMF) span with Raman amplification for CO-OFDM system. No multi-path interference (MPI) compensation algorithm is used
We proposed and demonstrated an in-band optical signal-to-noise ratio (OSNR) monitoring method for a polarization-division-multiplexed coherent optical orthogonal frequency-division-multiplexing (PDM-CO-OFDM) system. OSNR of the PDM signals on both polarization tributaries can be simultaneously monitored by calculating the electrical SNR with low complexity by taking advantage of the uncorrelation...
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