Abstract

We report a comprehensive set of experimental, simulation and analytical results on the benefit of nonlinear mitigation strategies for multi-subcarrier (MSC) PM-16QAM transmission systems. First, we demonstrate ~9% maximum reach gain enabled by symbol-rate optimization (SRO) of MSC-PM-16QAM in a 31 channels WDM transmission experiment. Then, we demonstrate that, in the considered experimental scenario, the gain provided by digital backpropagation (DBP) over single-carrier (SC) transmission is similar to that achieved by SRO over MSC transmission. Furthermore, we show that the SRO phenomenon can be weakened after self-channel interference (SCI) removal through DBP. As a result, and due to DBP performance limitations in the experiment, the combined effect of SRO and DBP was found to enable only an additional 4% gain in maximum reach. Finally, we address the impact and symbol-rate dependence of nonlinear phase noise (NLPN) in MSC-PM-16QAM transmission, discussing on the NLPN mitigation capability of standard carrier phase estimation (CPE) and on respective gains that could be achieved through its enhanced mitigation.

© 2017 Optical Society of America

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2016 (4)

2015 (3)

2014 (4)

2013 (1)

2012 (1)

M. Secondini and E. Forestieri, “Analytical fiber-optic channel model in the presence of cross-phase modulation,” IEEE Photonics Technol. Lett. 24, 2016–2019 (2012).
[Crossref]

2010 (2)

I. Fatadin, D. Ives, and S. J. Savory, “Laser linewidth tolerance for 16-QAM coherent optical systems using QPSK partitioning,” IEEE Photon. Technol. Lett. 22, 631–633 (2010).
[Crossref]

X. Zhou, “An improved feed-forward carrier recovery algorithm for coherent receivers with M-QAM modulation format,” IEEE Photon. Technol. Lett. 22, 1051–1053 (2010).
[Crossref]

2009 (1)

T. Pfau, S. Hoffmann, and R. Noé, “Hardware-efficient coherent digital receiver concept with feedforward carrier recovery for M-QAM constellations,” J. Lightw. Technol. 27, 989–999 (2009).
[Crossref]

2008 (1)

Abrate, S.

P. Poggiolini, A. Nespola, Y. Jiang, G. Bosco, A. Carena, L. Bertignono, S. M. Bilal, S. Abrate, and F. Forghieri, “Analytical and experimental results on system maximum reach increase through symbol rate optimization,” J. Lightwave Technol. 34, 1872–1885 (2016).
[Crossref]

A. Nespola, L. Bertignono, G. Bosco, A. Carena, Y. Jiang, S. M. Bilal, P. Poggiolini, S. Abrate, and F. Forghieri, “Experimental demonstration of fiber nonlinearity mitigation in a WDM multi-subcarrier coherent optical system,” in Proc. 41th European Conference and Exhibition on Optical Communication (ECOC), (2015), ID: 0382.

Akiyama, Y.

H. Nakashima, T. Tanimura, T. Oyama, Y. Akiyama, T. Hoshida, and J. C. Rasmussen, “Experimental investigation on nonlinear tolerance of subcarrier multiplexed signals with spectrum optimization,” in Proc. 41th European Conference on Optical Communication (ECOC), (2015), ID: 0391.

Alvarado, A.

L. Galdino, G. Liga, G. Saavedra, D. Ives, R. Maher, A. Alvarado, S. Savory, R. Killey, and P. Bayvel, “Experimental demonstration of modulation-dependent nonlinear interference in optical fibre communication,” in Proc. European Conf. Optical Communication (ECOC), (2016), pp. 950–952.

Bayvel, P.

L. Galdino, G. Liga, G. Saavedra, D. Ives, R. Maher, A. Alvarado, S. Savory, R. Killey, and P. Bayvel, “Experimental demonstration of modulation-dependent nonlinear interference in optical fibre communication,” in Proc. European Conf. Optical Communication (ECOC), (2016), pp. 950–952.

Bertignono, L.

P. Poggiolini, A. Nespola, Y. Jiang, G. Bosco, A. Carena, L. Bertignono, S. M. Bilal, S. Abrate, and F. Forghieri, “Analytical and experimental results on system maximum reach increase through symbol rate optimization,” J. Lightwave Technol. 34, 1872–1885 (2016).
[Crossref]

A. Nespola, Y. Jiang, L. Bertignono, G. Bosco, A. Carena, S. M. Bilal, P. Poggiolini, and F. Forghieri, “Effectiveness of digital back-propagation and symbol-rate optimization in coherent WDM optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), Th3D.2.

F. P. Guiomar, A. Carena, G. Bosco, L. Bertignono, A. Nespola, and P. Poggiolini, “Effectiveness of symbol-rate optimization with PM-16QAM subcarriers in WDM transmission,” in submitted to Optical Fiber Conference (OFC), (2017).

A. Nespola, L. Bertignono, G. Bosco, A. Carena, Y. Jiang, S. M. Bilal, P. Poggiolini, S. Abrate, and F. Forghieri, “Experimental demonstration of fiber nonlinearity mitigation in a WDM multi-subcarrier coherent optical system,” in Proc. 41th European Conference and Exhibition on Optical Communication (ECOC), (2015), ID: 0382.

A. Nespola, L. Bertignono, G. Bosco, A. Carena, P. Poggiolini, and F. Forghieri, “Independence of the impact of inter-channel non-linear effects on modulation format and system implications,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 485–487.

Bilal, S. M.

S. M. Bilal, C. Fludger, and G. Bosco, “Carrier phase estimation in multi-subcarrier coherent optical systems,” IEEE Photonics Technol. Lett. 28, 2090–2093 (2016).
[Crossref]

P. Poggiolini, A. Nespola, Y. Jiang, G. Bosco, A. Carena, L. Bertignono, S. M. Bilal, S. Abrate, and F. Forghieri, “Analytical and experimental results on system maximum reach increase through symbol rate optimization,” J. Lightwave Technol. 34, 1872–1885 (2016).
[Crossref]

A. Nespola, Y. Jiang, L. Bertignono, G. Bosco, A. Carena, S. M. Bilal, P. Poggiolini, and F. Forghieri, “Effectiveness of digital back-propagation and symbol-rate optimization in coherent WDM optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), Th3D.2.

A. Nespola, L. Bertignono, G. Bosco, A. Carena, Y. Jiang, S. M. Bilal, P. Poggiolini, S. Abrate, and F. Forghieri, “Experimental demonstration of fiber nonlinearity mitigation in a WDM multi-subcarrier coherent optical system,” in Proc. 41th European Conference and Exhibition on Optical Communication (ECOC), (2015), ID: 0382.

G. Bosco, S. M. Bilal, A. Nespola, P. Poggiolini, and F. Forghieri, “Impact of the transmitter IQ-skew in multi-subcarrier coherent optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), W4A.5.

Bisplinghoff, A.

A. Bisplinghoff, C. Vogel, T. Kupfer, S. Langenbach, and B. Schmauss, “Slip-reduced carrier phase estimation for coherent transmission in the presence of non-linear phase noise,” in Proc. Optical Fiber Communication Conference (OFC), (2013), OTu3I.1.

Böcherer, G.

F. Buchali, W. Idler, K. Schuh, L. Schmalen, T. Eriksson, G. Böcherer, P. Schulte, and F. Steiner, “Study of electrical subband multiplexing at 54 GHz modulation bandwidth for 16QAM and probabilistically shaped 64QAM,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 49–51.

Bolshtyansky, M.

J. X. Cai, M. Mazurczyk, O. V. Sinkin, M. Bolshtyansky, D. G. Foursa, and A. Pilipetskii, “Experimental study of subcarrier multiplexing benefit in 74 nm bandwidth transmission up to 20,450 km,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 677–679.

Bononi, A.

Bosco, G.

S. M. Bilal, C. Fludger, and G. Bosco, “Carrier phase estimation in multi-subcarrier coherent optical systems,” IEEE Photonics Technol. Lett. 28, 2090–2093 (2016).
[Crossref]

P. Poggiolini, A. Nespola, Y. Jiang, G. Bosco, A. Carena, L. Bertignono, S. M. Bilal, S. Abrate, and F. Forghieri, “Analytical and experimental results on system maximum reach increase through symbol rate optimization,” J. Lightwave Technol. 34, 1872–1885 (2016).
[Crossref]

A. Carena, G. Bosco, V. Curri, Y. Jiang, P. Poggiolini, and F. Forghieri, “EGN model of non-linear fiber propagation,” Opt. Express 22, 16335–16362 (2014).
[Crossref] [PubMed]

P. Poggiolini, G. Bosco, A. Carena, V. Curri, Y. Jiang, and F. Forghieri, “The GN-model of fiber non-linear propagation and its applications,” J. Lightwave Technol. 32, 694–721 (2014).
[Crossref]

A. Nespola, L. Bertignono, G. Bosco, A. Carena, P. Poggiolini, and F. Forghieri, “Independence of the impact of inter-channel non-linear effects on modulation format and system implications,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 485–487.

F. P. Guiomar, A. Carena, G. Bosco, L. Bertignono, A. Nespola, and P. Poggiolini, “Effectiveness of symbol-rate optimization with PM-16QAM subcarriers in WDM transmission,” in submitted to Optical Fiber Conference (OFC), (2017).

P. Poggiolini, A. Carena, Y. Jiang, G. Bosco, V. Curri, and F. Forghieri, “Impact of low-OSNR operation on the performance of advanced coherent optical transmission systems,” in Proc. European Conference on Optical Communication (ECOC), (2014), Mo.4.3.2.

A. Nespola, Y. Jiang, L. Bertignono, G. Bosco, A. Carena, S. M. Bilal, P. Poggiolini, and F. Forghieri, “Effectiveness of digital back-propagation and symbol-rate optimization in coherent WDM optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), Th3D.2.

G. Bosco, S. M. Bilal, A. Nespola, P. Poggiolini, and F. Forghieri, “Impact of the transmitter IQ-skew in multi-subcarrier coherent optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), W4A.5.

A. Nespola, L. Bertignono, G. Bosco, A. Carena, Y. Jiang, S. M. Bilal, P. Poggiolini, S. Abrate, and F. Forghieri, “Experimental demonstration of fiber nonlinearity mitigation in a WDM multi-subcarrier coherent optical system,” in Proc. 41th European Conference and Exhibition on Optical Communication (ECOC), (2015), ID: 0382.

Buchali, F.

F. Buchali, W. Idler, K. Schuh, L. Schmalen, T. Eriksson, G. Böcherer, P. Schulte, and F. Steiner, “Study of electrical subband multiplexing at 54 GHz modulation bandwidth for 16QAM and probabilistically shaped 64QAM,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 49–51.

Cai, J. X.

J. X. Cai, M. Mazurczyk, O. V. Sinkin, M. Bolshtyansky, D. G. Foursa, and A. Pilipetskii, “Experimental study of subcarrier multiplexing benefit in 74 nm bandwidth transmission up to 20,450 km,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 677–679.

Carbó, A.

A. Carbó, J. Renaudier, P. Tran, and G. Charlet, “Experimental analysis of non linear tolerance dependency of multicarrier modulations versus number of WDM channels,” in Proc. Optical Fiber Communications Conference and Exhibition (OFC), (2016), Tu3A.6.

Carena, A.

P. Poggiolini, A. Nespola, Y. Jiang, G. Bosco, A. Carena, L. Bertignono, S. M. Bilal, S. Abrate, and F. Forghieri, “Analytical and experimental results on system maximum reach increase through symbol rate optimization,” J. Lightwave Technol. 34, 1872–1885 (2016).
[Crossref]

P. Poggiolini, G. Bosco, A. Carena, V. Curri, Y. Jiang, and F. Forghieri, “The GN-model of fiber non-linear propagation and its applications,” J. Lightwave Technol. 32, 694–721 (2014).
[Crossref]

A. Carena, G. Bosco, V. Curri, Y. Jiang, P. Poggiolini, and F. Forghieri, “EGN model of non-linear fiber propagation,” Opt. Express 22, 16335–16362 (2014).
[Crossref] [PubMed]

A. Nespola, L. Bertignono, G. Bosco, A. Carena, P. Poggiolini, and F. Forghieri, “Independence of the impact of inter-channel non-linear effects on modulation format and system implications,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 485–487.

P. Poggiolini, A. Carena, Y. Jiang, G. Bosco, V. Curri, and F. Forghieri, “Impact of low-OSNR operation on the performance of advanced coherent optical transmission systems,” in Proc. European Conference on Optical Communication (ECOC), (2014), Mo.4.3.2.

A. Nespola, Y. Jiang, L. Bertignono, G. Bosco, A. Carena, S. M. Bilal, P. Poggiolini, and F. Forghieri, “Effectiveness of digital back-propagation and symbol-rate optimization in coherent WDM optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), Th3D.2.

F. P. Guiomar, A. Carena, G. Bosco, L. Bertignono, A. Nespola, and P. Poggiolini, “Effectiveness of symbol-rate optimization with PM-16QAM subcarriers in WDM transmission,” in submitted to Optical Fiber Conference (OFC), (2017).

A. Nespola, L. Bertignono, G. Bosco, A. Carena, Y. Jiang, S. M. Bilal, P. Poggiolini, S. Abrate, and F. Forghieri, “Experimental demonstration of fiber nonlinearity mitigation in a WDM multi-subcarrier coherent optical system,” in Proc. 41th European Conference and Exhibition on Optical Communication (ECOC), (2015), ID: 0382.

Chagnon, M.

M. Qiu, Q. Zhuge, M. Chagnon, Y. Gao, X. Xu, M. Morsy-Osman, and D. V. Plant, “Digital subcarrier multiplexing for fiber nonlinearity mitigation in coherent optical communication systems,” Opt. Express 22, 18770–18777 (2014).
[Crossref] [PubMed]

M. Qiu, Q. Zhuge, X. Xu, M. Chagnon, M. Morsy-Osman, and D. V. Plant, “Subcarrier multiplexing using DACs for fiber nonlinearity mitigation in coherent optical communication systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2014), Tu3J.2.

Charlet, G.

Curri, V.

A. Carena, G. Bosco, V. Curri, Y. Jiang, P. Poggiolini, and F. Forghieri, “EGN model of non-linear fiber propagation,” Opt. Express 22, 16335–16362 (2014).
[Crossref] [PubMed]

P. Poggiolini, G. Bosco, A. Carena, V. Curri, Y. Jiang, and F. Forghieri, “The GN-model of fiber non-linear propagation and its applications,” J. Lightwave Technol. 32, 694–721 (2014).
[Crossref]

P. Poggiolini, A. Carena, Y. Jiang, G. Bosco, V. Curri, and F. Forghieri, “Impact of low-OSNR operation on the performance of advanced coherent optical transmission systems,” in Proc. European Conference on Optical Communication (ECOC), (2014), Mo.4.3.2.

Dar, R.

Emplit, P.

Eriksson, T.

F. Buchali, W. Idler, K. Schuh, L. Schmalen, T. Eriksson, G. Böcherer, P. Schulte, and F. Steiner, “Study of electrical subband multiplexing at 54 GHz modulation bandwidth for 16QAM and probabilistically shaped 64QAM,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 49–51.

Fatadin, I.

I. Fatadin, D. Ives, and S. J. Savory, “Laser linewidth tolerance for 16-QAM coherent optical systems using QPSK partitioning,” IEEE Photon. Technol. Lett. 22, 631–633 (2010).
[Crossref]

Feder, M.

Fickers, J.

Fludger, C.

S. M. Bilal, C. Fludger, and G. Bosco, “Carrier phase estimation in multi-subcarrier coherent optical systems,” IEEE Photonics Technol. Lett. 28, 2090–2093 (2016).
[Crossref]

Forestieri, E.

M. Secondini and E. Forestieri, “Analytical fiber-optic channel model in the presence of cross-phase modulation,” IEEE Photonics Technol. Lett. 24, 2016–2019 (2012).
[Crossref]

Forghieri, F.

P. Poggiolini, A. Nespola, Y. Jiang, G. Bosco, A. Carena, L. Bertignono, S. M. Bilal, S. Abrate, and F. Forghieri, “Analytical and experimental results on system maximum reach increase through symbol rate optimization,” J. Lightwave Technol. 34, 1872–1885 (2016).
[Crossref]

P. Poggiolini, G. Bosco, A. Carena, V. Curri, Y. Jiang, and F. Forghieri, “The GN-model of fiber non-linear propagation and its applications,” J. Lightwave Technol. 32, 694–721 (2014).
[Crossref]

A. Carena, G. Bosco, V. Curri, Y. Jiang, P. Poggiolini, and F. Forghieri, “EGN model of non-linear fiber propagation,” Opt. Express 22, 16335–16362 (2014).
[Crossref] [PubMed]

A. Nespola, L. Bertignono, G. Bosco, A. Carena, P. Poggiolini, and F. Forghieri, “Independence of the impact of inter-channel non-linear effects on modulation format and system implications,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 485–487.

P. Poggiolini, A. Carena, Y. Jiang, G. Bosco, V. Curri, and F. Forghieri, “Impact of low-OSNR operation on the performance of advanced coherent optical transmission systems,” in Proc. European Conference on Optical Communication (ECOC), (2014), Mo.4.3.2.

A. Nespola, Y. Jiang, L. Bertignono, G. Bosco, A. Carena, S. M. Bilal, P. Poggiolini, and F. Forghieri, “Effectiveness of digital back-propagation and symbol-rate optimization in coherent WDM optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), Th3D.2.

G. Bosco, S. M. Bilal, A. Nespola, P. Poggiolini, and F. Forghieri, “Impact of the transmitter IQ-skew in multi-subcarrier coherent optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), W4A.5.

A. Nespola, L. Bertignono, G. Bosco, A. Carena, Y. Jiang, S. M. Bilal, P. Poggiolini, S. Abrate, and F. Forghieri, “Experimental demonstration of fiber nonlinearity mitigation in a WDM multi-subcarrier coherent optical system,” in Proc. 41th European Conference and Exhibition on Optical Communication (ECOC), (2015), ID: 0382.

Foursa, D. G.

J. X. Cai, M. Mazurczyk, O. V. Sinkin, M. Bolshtyansky, D. G. Foursa, and A. Pilipetskii, “Experimental study of subcarrier multiplexing benefit in 74 nm bandwidth transmission up to 20,450 km,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 677–679.

Galdino, L.

L. Galdino, G. Liga, G. Saavedra, D. Ives, R. Maher, A. Alvarado, S. Savory, R. Killey, and P. Bayvel, “Experimental demonstration of modulation-dependent nonlinear interference in optical fibre communication,” in Proc. European Conf. Optical Communication (ECOC), (2016), pp. 950–952.

Gao, Y.

Ghazisaeidi, A.

Guiomar, F. P.

F. P. Guiomar, A. Carena, G. Bosco, L. Bertignono, A. Nespola, and P. Poggiolini, “Effectiveness of symbol-rate optimization with PM-16QAM subcarriers in WDM transmission,” in submitted to Optical Fiber Conference (OFC), (2017).

Hoffmann, S.

T. Pfau, S. Hoffmann, and R. Noé, “Hardware-efficient coherent digital receiver concept with feedforward carrier recovery for M-QAM constellations,” J. Lightw. Technol. 27, 989–999 (2009).
[Crossref]

Horlin, F.

Hoshida, T.

H. Nakashima, T. Tanimura, T. Oyama, Y. Akiyama, T. Hoshida, and J. C. Rasmussen, “Experimental investigation on nonlinear tolerance of subcarrier multiplexed signals with spectrum optimization,” in Proc. 41th European Conference on Optical Communication (ECOC), (2015), ID: 0391.

Idler, W.

F. Buchali, W. Idler, K. Schuh, L. Schmalen, T. Eriksson, G. Böcherer, P. Schulte, and F. Steiner, “Study of electrical subband multiplexing at 54 GHz modulation bandwidth for 16QAM and probabilistically shaped 64QAM,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 49–51.

Ip, E.

Ives, D.

I. Fatadin, D. Ives, and S. J. Savory, “Laser linewidth tolerance for 16-QAM coherent optical systems using QPSK partitioning,” IEEE Photon. Technol. Lett. 22, 631–633 (2010).
[Crossref]

L. Galdino, G. Liga, G. Saavedra, D. Ives, R. Maher, A. Alvarado, S. Savory, R. Killey, and P. Bayvel, “Experimental demonstration of modulation-dependent nonlinear interference in optical fibre communication,” in Proc. European Conf. Optical Communication (ECOC), (2016), pp. 950–952.

Jiang, Y.

P. Poggiolini, A. Nespola, Y. Jiang, G. Bosco, A. Carena, L. Bertignono, S. M. Bilal, S. Abrate, and F. Forghieri, “Analytical and experimental results on system maximum reach increase through symbol rate optimization,” J. Lightwave Technol. 34, 1872–1885 (2016).
[Crossref]

A. Carena, G. Bosco, V. Curri, Y. Jiang, P. Poggiolini, and F. Forghieri, “EGN model of non-linear fiber propagation,” Opt. Express 22, 16335–16362 (2014).
[Crossref] [PubMed]

P. Poggiolini, G. Bosco, A. Carena, V. Curri, Y. Jiang, and F. Forghieri, “The GN-model of fiber non-linear propagation and its applications,” J. Lightwave Technol. 32, 694–721 (2014).
[Crossref]

P. Poggiolini, A. Carena, Y. Jiang, G. Bosco, V. Curri, and F. Forghieri, “Impact of low-OSNR operation on the performance of advanced coherent optical transmission systems,” in Proc. European Conference on Optical Communication (ECOC), (2014), Mo.4.3.2.

A. Nespola, Y. Jiang, L. Bertignono, G. Bosco, A. Carena, S. M. Bilal, P. Poggiolini, and F. Forghieri, “Effectiveness of digital back-propagation and symbol-rate optimization in coherent WDM optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), Th3D.2.

A. Nespola, L. Bertignono, G. Bosco, A. Carena, Y. Jiang, S. M. Bilal, P. Poggiolini, S. Abrate, and F. Forghieri, “Experimental demonstration of fiber nonlinearity mitigation in a WDM multi-subcarrier coherent optical system,” in Proc. 41th European Conference and Exhibition on Optical Communication (ECOC), (2015), ID: 0382.

Kahn, J. M.

Killey, R.

L. Galdino, G. Liga, G. Saavedra, D. Ives, R. Maher, A. Alvarado, S. Savory, R. Killey, and P. Bayvel, “Experimental demonstration of modulation-dependent nonlinear interference in optical fibre communication,” in Proc. European Conf. Optical Communication (ECOC), (2016), pp. 950–952.

Kupfer, T.

A. Bisplinghoff, C. Vogel, T. Kupfer, S. Langenbach, and B. Schmauss, “Slip-reduced carrier phase estimation for coherent transmission in the presence of non-linear phase noise,” in Proc. Optical Fiber Communication Conference (OFC), (2013), OTu3I.1.

Langenbach, S.

A. Bisplinghoff, C. Vogel, T. Kupfer, S. Langenbach, and B. Schmauss, “Slip-reduced carrier phase estimation for coherent transmission in the presence of non-linear phase noise,” in Proc. Optical Fiber Communication Conference (OFC), (2013), OTu3I.1.

Liga, G.

L. Galdino, G. Liga, G. Saavedra, D. Ives, R. Maher, A. Alvarado, S. Savory, R. Killey, and P. Bayvel, “Experimental demonstration of modulation-dependent nonlinear interference in optical fibre communication,” in Proc. European Conf. Optical Communication (ECOC), (2016), pp. 950–952.

Maher, R.

L. Galdino, G. Liga, G. Saavedra, D. Ives, R. Maher, A. Alvarado, S. Savory, R. Killey, and P. Bayvel, “Experimental demonstration of modulation-dependent nonlinear interference in optical fibre communication,” in Proc. European Conf. Optical Communication (ECOC), (2016), pp. 950–952.

Mazurczyk, M.

J. X. Cai, M. Mazurczyk, O. V. Sinkin, M. Bolshtyansky, D. G. Foursa, and A. Pilipetskii, “Experimental study of subcarrier multiplexing benefit in 74 nm bandwidth transmission up to 20,450 km,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 677–679.

Mecozzi, A.

Meseguer, A. C.

Morsy-Osman, M.

M. Qiu, Q. Zhuge, M. Chagnon, Y. Gao, X. Xu, M. Morsy-Osman, and D. V. Plant, “Digital subcarrier multiplexing for fiber nonlinearity mitigation in coherent optical communication systems,” Opt. Express 22, 18770–18777 (2014).
[Crossref] [PubMed]

M. Qiu, Q. Zhuge, X. Xu, M. Chagnon, M. Morsy-Osman, and D. V. Plant, “Subcarrier multiplexing using DACs for fiber nonlinearity mitigation in coherent optical communication systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2014), Tu3J.2.

Nakashima, H.

H. Nakashima, T. Tanimura, T. Oyama, Y. Akiyama, T. Hoshida, and J. C. Rasmussen, “Experimental investigation on nonlinear tolerance of subcarrier multiplexed signals with spectrum optimization,” in Proc. 41th European Conference on Optical Communication (ECOC), (2015), ID: 0391.

Nespola, A.

P. Poggiolini, A. Nespola, Y. Jiang, G. Bosco, A. Carena, L. Bertignono, S. M. Bilal, S. Abrate, and F. Forghieri, “Analytical and experimental results on system maximum reach increase through symbol rate optimization,” J. Lightwave Technol. 34, 1872–1885 (2016).
[Crossref]

A. Nespola, L. Bertignono, G. Bosco, A. Carena, P. Poggiolini, and F. Forghieri, “Independence of the impact of inter-channel non-linear effects on modulation format and system implications,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 485–487.

G. Bosco, S. M. Bilal, A. Nespola, P. Poggiolini, and F. Forghieri, “Impact of the transmitter IQ-skew in multi-subcarrier coherent optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), W4A.5.

A. Nespola, L. Bertignono, G. Bosco, A. Carena, Y. Jiang, S. M. Bilal, P. Poggiolini, S. Abrate, and F. Forghieri, “Experimental demonstration of fiber nonlinearity mitigation in a WDM multi-subcarrier coherent optical system,” in Proc. 41th European Conference and Exhibition on Optical Communication (ECOC), (2015), ID: 0382.

F. P. Guiomar, A. Carena, G. Bosco, L. Bertignono, A. Nespola, and P. Poggiolini, “Effectiveness of symbol-rate optimization with PM-16QAM subcarriers in WDM transmission,” in submitted to Optical Fiber Conference (OFC), (2017).

A. Nespola, Y. Jiang, L. Bertignono, G. Bosco, A. Carena, S. M. Bilal, P. Poggiolini, and F. Forghieri, “Effectiveness of digital back-propagation and symbol-rate optimization in coherent WDM optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), Th3D.2.

Noé, R.

T. Pfau, S. Hoffmann, and R. Noé, “Hardware-efficient coherent digital receiver concept with feedforward carrier recovery for M-QAM constellations,” J. Lightw. Technol. 27, 989–999 (2009).
[Crossref]

Oyama, T.

H. Nakashima, T. Tanimura, T. Oyama, Y. Akiyama, T. Hoshida, and J. C. Rasmussen, “Experimental investigation on nonlinear tolerance of subcarrier multiplexed signals with spectrum optimization,” in Proc. 41th European Conference on Optical Communication (ECOC), (2015), ID: 0391.

Pfau, T.

T. Pfau, S. Hoffmann, and R. Noé, “Hardware-efficient coherent digital receiver concept with feedforward carrier recovery for M-QAM constellations,” J. Lightw. Technol. 27, 989–999 (2009).
[Crossref]

Pilipetskii, A.

J. X. Cai, M. Mazurczyk, O. V. Sinkin, M. Bolshtyansky, D. G. Foursa, and A. Pilipetskii, “Experimental study of subcarrier multiplexing benefit in 74 nm bandwidth transmission up to 20,450 km,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 677–679.

Plant, D. V.

M. Qiu, Q. Zhuge, M. Chagnon, Y. Gao, X. Xu, M. Morsy-Osman, and D. V. Plant, “Digital subcarrier multiplexing for fiber nonlinearity mitigation in coherent optical communication systems,” Opt. Express 22, 18770–18777 (2014).
[Crossref] [PubMed]

M. Qiu, Q. Zhuge, X. Xu, M. Chagnon, M. Morsy-Osman, and D. V. Plant, “Subcarrier multiplexing using DACs for fiber nonlinearity mitigation in coherent optical communication systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2014), Tu3J.2.

Poggiolini, P.

P. Poggiolini, A. Nespola, Y. Jiang, G. Bosco, A. Carena, L. Bertignono, S. M. Bilal, S. Abrate, and F. Forghieri, “Analytical and experimental results on system maximum reach increase through symbol rate optimization,” J. Lightwave Technol. 34, 1872–1885 (2016).
[Crossref]

A. Carena, G. Bosco, V. Curri, Y. Jiang, P. Poggiolini, and F. Forghieri, “EGN model of non-linear fiber propagation,” Opt. Express 22, 16335–16362 (2014).
[Crossref] [PubMed]

P. Poggiolini, G. Bosco, A. Carena, V. Curri, Y. Jiang, and F. Forghieri, “The GN-model of fiber non-linear propagation and its applications,” J. Lightwave Technol. 32, 694–721 (2014).
[Crossref]

A. Nespola, L. Bertignono, G. Bosco, A. Carena, P. Poggiolini, and F. Forghieri, “Independence of the impact of inter-channel non-linear effects on modulation format and system implications,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 485–487.

P. Poggiolini, A. Carena, Y. Jiang, G. Bosco, V. Curri, and F. Forghieri, “Impact of low-OSNR operation on the performance of advanced coherent optical transmission systems,” in Proc. European Conference on Optical Communication (ECOC), (2014), Mo.4.3.2.

A. Nespola, L. Bertignono, G. Bosco, A. Carena, Y. Jiang, S. M. Bilal, P. Poggiolini, S. Abrate, and F. Forghieri, “Experimental demonstration of fiber nonlinearity mitigation in a WDM multi-subcarrier coherent optical system,” in Proc. 41th European Conference and Exhibition on Optical Communication (ECOC), (2015), ID: 0382.

G. Bosco, S. M. Bilal, A. Nespola, P. Poggiolini, and F. Forghieri, “Impact of the transmitter IQ-skew in multi-subcarrier coherent optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), W4A.5.

F. P. Guiomar, A. Carena, G. Bosco, L. Bertignono, A. Nespola, and P. Poggiolini, “Effectiveness of symbol-rate optimization with PM-16QAM subcarriers in WDM transmission,” in submitted to Optical Fiber Conference (OFC), (2017).

A. Nespola, Y. Jiang, L. Bertignono, G. Bosco, A. Carena, S. M. Bilal, P. Poggiolini, and F. Forghieri, “Effectiveness of digital back-propagation and symbol-rate optimization in coherent WDM optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), Th3D.2.

Qiu, M.

M. Qiu, Q. Zhuge, M. Chagnon, Y. Gao, X. Xu, M. Morsy-Osman, and D. V. Plant, “Digital subcarrier multiplexing for fiber nonlinearity mitigation in coherent optical communication systems,” Opt. Express 22, 18770–18777 (2014).
[Crossref] [PubMed]

M. Qiu, Q. Zhuge, X. Xu, M. Chagnon, M. Morsy-Osman, and D. V. Plant, “Subcarrier multiplexing using DACs for fiber nonlinearity mitigation in coherent optical communication systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2014), Tu3J.2.

Rasmussen, J. C.

H. Nakashima, T. Tanimura, T. Oyama, Y. Akiyama, T. Hoshida, and J. C. Rasmussen, “Experimental investigation on nonlinear tolerance of subcarrier multiplexed signals with spectrum optimization,” in Proc. 41th European Conference on Optical Communication (ECOC), (2015), ID: 0391.

Renaudier, J.

Rios-Muller, R.

Rios-Müller, R.

Rossi, N.

Saavedra, G.

L. Galdino, G. Liga, G. Saavedra, D. Ives, R. Maher, A. Alvarado, S. Savory, R. Killey, and P. Bayvel, “Experimental demonstration of modulation-dependent nonlinear interference in optical fibre communication,” in Proc. European Conf. Optical Communication (ECOC), (2016), pp. 950–952.

Salsi, M.

Savory, S.

L. Galdino, G. Liga, G. Saavedra, D. Ives, R. Maher, A. Alvarado, S. Savory, R. Killey, and P. Bayvel, “Experimental demonstration of modulation-dependent nonlinear interference in optical fibre communication,” in Proc. European Conf. Optical Communication (ECOC), (2016), pp. 950–952.

Savory, S. J.

I. Fatadin, D. Ives, and S. J. Savory, “Laser linewidth tolerance for 16-QAM coherent optical systems using QPSK partitioning,” IEEE Photon. Technol. Lett. 22, 631–633 (2010).
[Crossref]

Schmalen, L.

F. Buchali, W. Idler, K. Schuh, L. Schmalen, T. Eriksson, G. Böcherer, P. Schulte, and F. Steiner, “Study of electrical subband multiplexing at 54 GHz modulation bandwidth for 16QAM and probabilistically shaped 64QAM,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 49–51.

Schmauss, B.

A. Bisplinghoff, C. Vogel, T. Kupfer, S. Langenbach, and B. Schmauss, “Slip-reduced carrier phase estimation for coherent transmission in the presence of non-linear phase noise,” in Proc. Optical Fiber Communication Conference (OFC), (2013), OTu3I.1.

Schuh, K.

F. Buchali, W. Idler, K. Schuh, L. Schmalen, T. Eriksson, G. Böcherer, P. Schulte, and F. Steiner, “Study of electrical subband multiplexing at 54 GHz modulation bandwidth for 16QAM and probabilistically shaped 64QAM,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 49–51.

Schulte, P.

F. Buchali, W. Idler, K. Schuh, L. Schmalen, T. Eriksson, G. Böcherer, P. Schulte, and F. Steiner, “Study of electrical subband multiplexing at 54 GHz modulation bandwidth for 16QAM and probabilistically shaped 64QAM,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 49–51.

Secondini, M.

M. Secondini and E. Forestieri, “Analytical fiber-optic channel model in the presence of cross-phase modulation,” IEEE Photonics Technol. Lett. 24, 2016–2019 (2012).
[Crossref]

Serena, P.

Shtaif, M.

Sinkin, O. V.

J. X. Cai, M. Mazurczyk, O. V. Sinkin, M. Bolshtyansky, D. G. Foursa, and A. Pilipetskii, “Experimental study of subcarrier multiplexing benefit in 74 nm bandwidth transmission up to 20,450 km,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 677–679.

Steiner, F.

F. Buchali, W. Idler, K. Schuh, L. Schmalen, T. Eriksson, G. Böcherer, P. Schulte, and F. Steiner, “Study of electrical subband multiplexing at 54 GHz modulation bandwidth for 16QAM and probabilistically shaped 64QAM,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 49–51.

Tanimura, T.

H. Nakashima, T. Tanimura, T. Oyama, Y. Akiyama, T. Hoshida, and J. C. Rasmussen, “Experimental investigation on nonlinear tolerance of subcarrier multiplexed signals with spectrum optimization,” in Proc. 41th European Conference on Optical Communication (ECOC), (2015), ID: 0391.

Tran, P.

A. C. Meseguer, J. Renaudier, R. Rios-Müller, P. Tran, and G. Charlet, “Impact of bandwidth efficiency in nonlinear tolerance of multicarrier modulations,” J. Lightwave Technol. 34, 1787–1792 (2016).
[Crossref]

A. Carbó, J. Renaudier, P. Tran, and G. Charlet, “Experimental analysis of non linear tolerance dependency of multicarrier modulations versus number of WDM channels,” in Proc. Optical Fiber Communications Conference and Exhibition (OFC), (2016), Tu3A.6.

Vogel, C.

A. Bisplinghoff, C. Vogel, T. Kupfer, S. Langenbach, and B. Schmauss, “Slip-reduced carrier phase estimation for coherent transmission in the presence of non-linear phase noise,” in Proc. Optical Fiber Communication Conference (OFC), (2013), OTu3I.1.

Winzer, P. J.

R. Dar and P. J. Winzer, “On the limits of digital back-propagation in fully loaded WDM systems,” IEEE Photonics Technol. Lett. 28, 1253–1256 (2016).
[Crossref]

Xu, X.

M. Qiu, Q. Zhuge, M. Chagnon, Y. Gao, X. Xu, M. Morsy-Osman, and D. V. Plant, “Digital subcarrier multiplexing for fiber nonlinearity mitigation in coherent optical communication systems,” Opt. Express 22, 18770–18777 (2014).
[Crossref] [PubMed]

M. Qiu, Q. Zhuge, X. Xu, M. Chagnon, M. Morsy-Osman, and D. V. Plant, “Subcarrier multiplexing using DACs for fiber nonlinearity mitigation in coherent optical communication systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2014), Tu3J.2.

Zhou, X.

X. Zhou, “An improved feed-forward carrier recovery algorithm for coherent receivers with M-QAM modulation format,” IEEE Photon. Technol. Lett. 22, 1051–1053 (2010).
[Crossref]

Zhuge, Q.

M. Qiu, Q. Zhuge, M. Chagnon, Y. Gao, X. Xu, M. Morsy-Osman, and D. V. Plant, “Digital subcarrier multiplexing for fiber nonlinearity mitigation in coherent optical communication systems,” Opt. Express 22, 18770–18777 (2014).
[Crossref] [PubMed]

M. Qiu, Q. Zhuge, X. Xu, M. Chagnon, M. Morsy-Osman, and D. V. Plant, “Subcarrier multiplexing using DACs for fiber nonlinearity mitigation in coherent optical communication systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2014), Tu3J.2.

IEEE Photon. Technol. Lett. (2)

I. Fatadin, D. Ives, and S. J. Savory, “Laser linewidth tolerance for 16-QAM coherent optical systems using QPSK partitioning,” IEEE Photon. Technol. Lett. 22, 631–633 (2010).
[Crossref]

X. Zhou, “An improved feed-forward carrier recovery algorithm for coherent receivers with M-QAM modulation format,” IEEE Photon. Technol. Lett. 22, 1051–1053 (2010).
[Crossref]

IEEE Photonics Technol. Lett. (3)

R. Dar and P. J. Winzer, “On the limits of digital back-propagation in fully loaded WDM systems,” IEEE Photonics Technol. Lett. 28, 1253–1256 (2016).
[Crossref]

S. M. Bilal, C. Fludger, and G. Bosco, “Carrier phase estimation in multi-subcarrier coherent optical systems,” IEEE Photonics Technol. Lett. 28, 2090–2093 (2016).
[Crossref]

M. Secondini and E. Forestieri, “Analytical fiber-optic channel model in the presence of cross-phase modulation,” IEEE Photonics Technol. Lett. 24, 2016–2019 (2012).
[Crossref]

J. Lightw. Technol. (1)

T. Pfau, S. Hoffmann, and R. Noé, “Hardware-efficient coherent digital receiver concept with feedforward carrier recovery for M-QAM constellations,” J. Lightw. Technol. 27, 989–999 (2009).
[Crossref]

J. Lightwave Technol. (8)

R. Rios-Muller, J. Renaudier, and G. Charlet, “Blind receiver skew compensation and estimation for long-haul non-dispersion managed systems using adaptive equalizer,” J. Lightwave Technol. 33, 1315–1318 (2015).
[Crossref]

E. Ip and J. M. Kahn, “Compensation of dispersion and nonlinear impairments using digital backpropagation,” J. Lightwave Technol. 26, 3416–3425 (2008).
[Crossref]

P. Poggiolini, G. Bosco, A. Carena, V. Curri, Y. Jiang, and F. Forghieri, “The GN-model of fiber non-linear propagation and its applications,” J. Lightwave Technol. 32, 694–721 (2014).
[Crossref]

R. Dar, M. Feder, A. Mecozzi, and M. Shtaif, “Inter-channel nonlinear interference noise in WDM systems: Modeling and mitigation,” J. Lightwave Technol. 33, 1044–1053 (2015).
[Crossref]

J. Fickers, A. Ghazisaeidi, M. Salsi, G. Charlet, P. Emplit, and F. Horlin, “Multicarrier offset-QAM for long-haul coherent optical communications,” J. Lightwave Technol. 32, 4069–4076 (2014).
[Crossref]

A. C. Meseguer, J. Renaudier, R. Rios-Müller, P. Tran, and G. Charlet, “Impact of bandwidth efficiency in nonlinear tolerance of multicarrier modulations,” J. Lightwave Technol. 34, 1787–1792 (2016).
[Crossref]

N. Rossi, P. Serena, and A. Bononi, “Symbol-rate dependence of dominant nonlinearity and reach in coherent WDM links,” J. Lightwave Technol. 33, 3132–3143 (2015).

P. Poggiolini, A. Nespola, Y. Jiang, G. Bosco, A. Carena, L. Bertignono, S. M. Bilal, S. Abrate, and F. Forghieri, “Analytical and experimental results on system maximum reach increase through symbol rate optimization,” J. Lightwave Technol. 34, 1872–1885 (2016).
[Crossref]

Opt. Express (3)

Other (13)

L. Galdino, G. Liga, G. Saavedra, D. Ives, R. Maher, A. Alvarado, S. Savory, R. Killey, and P. Bayvel, “Experimental demonstration of modulation-dependent nonlinear interference in optical fibre communication,” in Proc. European Conf. Optical Communication (ECOC), (2016), pp. 950–952.

A. Nespola, L. Bertignono, G. Bosco, A. Carena, P. Poggiolini, and F. Forghieri, “Independence of the impact of inter-channel non-linear effects on modulation format and system implications,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 485–487.

A. Carbó, J. Renaudier, P. Tran, and G. Charlet, “Experimental analysis of non linear tolerance dependency of multicarrier modulations versus number of WDM channels,” in Proc. Optical Fiber Communications Conference and Exhibition (OFC), (2016), Tu3A.6.

M. Qiu, Q. Zhuge, X. Xu, M. Chagnon, M. Morsy-Osman, and D. V. Plant, “Subcarrier multiplexing using DACs for fiber nonlinearity mitigation in coherent optical communication systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2014), Tu3J.2.

H. Nakashima, T. Tanimura, T. Oyama, Y. Akiyama, T. Hoshida, and J. C. Rasmussen, “Experimental investigation on nonlinear tolerance of subcarrier multiplexed signals with spectrum optimization,” in Proc. 41th European Conference on Optical Communication (ECOC), (2015), ID: 0391.

A. Nespola, L. Bertignono, G. Bosco, A. Carena, Y. Jiang, S. M. Bilal, P. Poggiolini, S. Abrate, and F. Forghieri, “Experimental demonstration of fiber nonlinearity mitigation in a WDM multi-subcarrier coherent optical system,” in Proc. 41th European Conference and Exhibition on Optical Communication (ECOC), (2015), ID: 0382.

J. X. Cai, M. Mazurczyk, O. V. Sinkin, M. Bolshtyansky, D. G. Foursa, and A. Pilipetskii, “Experimental study of subcarrier multiplexing benefit in 74 nm bandwidth transmission up to 20,450 km,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 677–679.

F. Buchali, W. Idler, K. Schuh, L. Schmalen, T. Eriksson, G. Böcherer, P. Schulte, and F. Steiner, “Study of electrical subband multiplexing at 54 GHz modulation bandwidth for 16QAM and probabilistically shaped 64QAM,” in Proc. European Conference on Optical Communication (ECOC), (2016), pp. 49–51.

G. Bosco, S. M. Bilal, A. Nespola, P. Poggiolini, and F. Forghieri, “Impact of the transmitter IQ-skew in multi-subcarrier coherent optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), W4A.5.

A. Nespola, Y. Jiang, L. Bertignono, G. Bosco, A. Carena, S. M. Bilal, P. Poggiolini, and F. Forghieri, “Effectiveness of digital back-propagation and symbol-rate optimization in coherent WDM optical systems,” in Proc. Optical Fiber Communication Conf. and Exposition (OFC), (2016), Th3D.2.

F. P. Guiomar, A. Carena, G. Bosco, L. Bertignono, A. Nespola, and P. Poggiolini, “Effectiveness of symbol-rate optimization with PM-16QAM subcarriers in WDM transmission,” in submitted to Optical Fiber Conference (OFC), (2017).

A. Bisplinghoff, C. Vogel, T. Kupfer, S. Langenbach, and B. Schmauss, “Slip-reduced carrier phase estimation for coherent transmission in the presence of non-linear phase noise,” in Proc. Optical Fiber Communication Conference (OFC), (2013), OTu3I.1.

P. Poggiolini, A. Carena, Y. Jiang, G. Bosco, V. Curri, and F. Forghieri, “Impact of low-OSNR operation on the performance of advanced coherent optical transmission systems,” in Proc. European Conference on Optical Communication (ECOC), (2014), Mo.4.3.2.

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Figures (10)

Fig. 1
Fig. 1 Spectra schematic representation of 31-channel WDM-MSC transmission adopted in this work. The given examples correspond to a) 1 × 24 GBaud, b) 6 × 4 GBaud, and c) 8 × 3 GBaud.
Fig. 2
Fig. 2 Laboratorial setup of the 31-channel MSC transmission experiment.
Fig. 3
Fig. 3 Sequence of DSP algorithms utilized for the processing of the received MSC signals.
Fig. 4
Fig. 4 Optical B2B characterization of the MSC transmission system.
Fig. 5
Fig. 5 Power spectral density of NLI at a fixed transmitted power of 0 dBm per channel. a) 1 × 24 GBaud, b) 2 × 12 GBaud, c) 4 × 6 GBaud, d) 6 × 4 GBaud, e) 8 × 3 GBaud, f) 12 × 2 GBaud.
Fig. 6
Fig. 6 Maximum reach versus input power of the SCM PM-16QAM system after SRO and/or DBP (for ease of visualization, 6×4 GBaud results are not shown).
Fig. 7
Fig. 7 a) Maximum reach at the optimum power vs symbol-rate after CDE and DBP; b) SRO gain (in %) over the baseline 1 × 24 GBaud MSC as predicted by the EGN model with 31 channels and single-channel input signal.
Fig. 8
Fig. 8 Experimental, simulation and analytical results on the performance of the SCM PM-16QAM system after ideal phase noise compensation. a) Maximum reach vs input power; b) SRO vs symbol-rate.
Fig. 9
Fig. 9 Optimization of the block length of DD-V&V for phase noise mitigation after 24 spans (2598 km) and at the optimum launch power. a) 1×24 GBaud; b) 2×12 GBaud; c) 4×6 GBaud; d) 8×3 GBaud.
Fig. 10
Fig. 10 Optimization of the block length of DA-V&V for phase noise mitigation after 24 spans (2598 km) and at the optimum launch power. a) 1×24 GBaud; b) 2×12 GBaud; c) 4×6 GBaud; d) 8×3 GBaud.

Tables (2)

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Table 1 Description of the adopted MSC configurations. Rs– symbol-rate (in GBaud); NSC– number of subcarriers; Δ fSC– frequency separation between subcarriers (in GHz); Δ fBB– frequency separation between the two subcarriers nearest to baseband (in GHz); Δ fWDM– frequency separation between edge subcarriers from different channels (in GHz); Nsyms– periodic sequence length in symbols.

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Table 2 Optimum number of CPE taps and resulting FOM after propagation over 24 fiber spans at the optimum launch power identified in Fig. 6a.

Equations (5)

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SNR = 10 log 10 ( P tx P NLI P ASE + P NLI ) ,
BER = 3 8 erfc ( 10 SNR 10 10 ) ,
SNR max = 10 log 10 [ 10 ( erfc 1 ( 8 3 BER max ) ) 2 ] + B 2 B pen .
FOM = n var ( Im ( C n ) ) n var ( Re ( C n ) ) ,
C n = R n e j T n | T n | ,

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