High Capacity Transport – 100G and Beyond

For excellent cost and performance, modern high capacity transport systems use digital coherent processing to overcome many physical barriers. Coherent methods are explained and measured performances are shown for commercial coherent systems at 100 GB/s and beyond. Topics discussed include: • Chromatic Dispersion (CD) and Polarization Mode Dispersion (PMD) • Digital Signal Processing (DSP) • Signal-to-Noise-plus-Distortion Ratio (SNDR), • Optical Signal-to-Noise Ratio (OSNR), RAMAN and Erbium Doped Fiber Amplifiers (EDFAs) • Coherent Transceivers: o Modulations, Transmitter/Receiver DSP, DAC, Spectral Shaping, Forward Error Correction (FEC), Dual Polarization Quaternary Phase Shift Keyed (DP-QPSK), Spectral Efficiency, 16 Quadrature Amplitude Modulation (16-QAM), Constellation Multiplicity, Subcarrier Multiplicity • Submarine, Terrestrial (Long Haul and Metro) characteristics