ECOC 2015 P. Poggiolini, A. Carena, Y. Jiang, G. Bosco Politecnico di Torino, Italy F. Forghieri Cisco Photonics Italy, (MB) Italy

ECOC

ECOC

ECOC single-carrier 16-subcarriers 8-subcarriers

ECOC single-carrier 16-subcarriers 8-subcarriers

ECOC PSCF, span length 108 km, all EDFA

ECOC km PSCF, span length 108 km, all EDFA

ECOC km km 12.4 % reach increase PSCF, span length 108 km, all EDFA single-carrier and 8 subcarrier had same btb sensitivity prediction: 24 subcarriers 15%-16% gain PSCF fiber kindly provided by

ECOC

ECOC

ECOC

ECOC

ECOC

ECOC average PSD of NLI over the center channel PSD of the transmitted signal a constant value across different symbol rates means same maximum reach

ECOC per-channel symbol rate, GBaud  PM-QPSK, roll-off 0.05, spacing 1.05 x (symb rate), SMF, 100 km spans, 50 spans average NLI power spectral density simulations

ECOC P. Poggiolini, Y. Jiang, A. Carena, G. Bosco, F. Forghieri, “Analytical results on system maximum reach increase through symbol rate optimization,” Proc. OFC 2015, paper Th3D.6, Los Angeles, Mar. 2015

ECOC per-channel symbol rate, GBaud  PM-QPSK, roll-off 0.05, spacing 1.05 x (symb rate), SMF, 100 km spans, 50 spans average NLI power spectral density simulations 1.35 dB

ECOC

ECOC B WDM 5 THz per-channel symbol rate, GBaud average NLI power spectral density B WDM = 500 GHz simulations 2.5 THz1.5 THz  PM-QPSK, roll-off 0.05, spacing 1.05 x (symb rate), SMF, 100 km spans, 50 spans

ECOC

ECOC

ECOC THz2.5 THz B WDM 5 THz per-channel symbol rate, GBaud average NLI power spectral density B WDM = 500 GHz simulations  PM-QPSK, roll-off 0.05, spacing 1.05 x (symb rate), SMF, 100 km spans, 50 spans

ECOC 2015  PM-QPSK, roll-off 0.05, spacing 1.05 x (symb rate), SMF, 100 km spans, 50 spans B WDM 5 THz per-channel symbol rate, GBaud average NLI power spectral density B WDM = 500 GHz simulations 1.8 dB 2.45 dB 20% reach 1.35 dB

ECOC total system bandwidth, THz NLI mitigation [dB]  All curves drawn using the FULL EGN model  SRO: between 32 GBaud and the optimum rate 2.4 GBaud  BP: ideal backward propagation over the 32 GBaud center channel  PM-QPSK, roll-off 0.05, spacing 1.05 x (symb rate), SMF, 100 km spans, 50 spans BP SRO actual BP

ECOC total system bandwidth, THz NLI mitigation [dB]  PM-QPSK, roll-off 0.05, spacing 1.05 x (symb rate), SMF, 100 km spans, 50 spans BP SRO SRO + BP  All curves drawn using the FULL EGN model  SRO: between 32 GBaud and the optimum rate 2.4 GBaud  BP: ideal backward propagation over the bandwidth of the center channel (33.6 GHz)

ECOC THz B WDM 5 THz 2.5 THz 500 GHz average NLI power spectral density simulations per-channel symbol rate, GBaud 1.1 dB 9% reach  PM-16QAM, roll-off 0.05, spacing 1.05 x (symb rate), SMF, 100 km spans, 50 spans 0.9 dB

ECOC

ECOC total system bandwidth, THz NLI mitigation [dB]  PM-16QAM, roll-off 0.05, spacing 1.05 x (symb rate), SMF, 100 km spans, 50 spans  SRO: between 32 GBaud and the optimum rate 2.4 GBaud  BP: ideal backward propagation over the 32 GBaud center channel BP SRO

ECOC

ECOC ? downloadable at

ECOC

ECOC XPM EGN single channel FWM SMF 50 spans 2.4 GBaud 32 GBaud 96 GBaud  B WDM = 504 GHz  B WDM = 504 GHz, 1.92 Tb/s total, PM-QPSK, roll-off 0.05, spacing 1.05 x (symb rate), 100 km spans