Abstract

We investigated through simulations the performance of Nyquist-WDM Terabit superchannels implemented using polarization-multiplexed phase shift-keying based on 2 (PM-BPSK) and 4 (PM-QPSK) signal points or polarization-multiplexed quadrature amplitude modulation based on 8 (PM-8QAM) and 16 (PM-16QAM) signal points. Terabit superchannels are obtained through the aggregation of multiple subcarriers using the Nyquist-WDM technique, based on a tight spectral shaping of each subcarrier which allows very narrow spacing. We first studied the optimum transmitter/receiver filtering in a back-to-back configuration. Then we investigated the maximum reach for different spectral efficiencies, after nonlinear propagation over uncompensated links with lumped amplification. Performance for systems based on both standard single-mode fiber (SSMF) and large effective area non-zero dispersion-shifted fiber (NZDSF) has been analyzed. Assuming SSMF with 25-dB span loss, we found that PM-BPSK can reach 6480 km at a net capacity of 4 Tb/s across the C band. Conversely, PM-16QAM can deliver 27 Tb/s, but over 270 km only. Note that a lower span length, the use of Raman amplification and/or pure silica-core fibers (PSCFs) can significantly increase the maximum reach, but without changing the hierarchy among the performance of modulation formats. We also show that the maximum reachable distance is approximately 2/3 of the one achievable in linear propagation at the optimum launch power, regardless of the modulation format, spacing and fiber type. As additional results, we also verified that the optimum launch power per subcarrier linearly depends on the span loss, varies with the fiber type, but it is independent of the modulation format, and that the relationship between the maximum reachable distance and the span loss is almost linear.

© 2010 IEEE

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  7. E. Torrengo, "Transoceanic PM-QPSK Terabit superchannel transmission experiments at baud-rate subcarrier spacing," Proc. ECOC 2010 (2010).
  8. J.-X. Cai, "Transmission of 96$\,{\times}\,$100 G pre-filtered PDM-RZ-QPSK channels with 300% spectral efficiency over 10 608 km and 400% spectral efficiency over 4 368 km," Proc. OFC 2010 (2010).
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  15. G. Charlet, "Transmission of 81 channels at 40 Gbit/s over a transpacific-distance erbium-only link, using PDM-BPSK modulation, coherent detection, and a new large effective area fibre," Proc. ECOC 2008 (2008).
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  18. A. H. Gnauck, "10$\,{\times}\,$112-Gb/s PDM 16-QAM transmission over 1022 km of SSMF with a spectral efficiency of 4.1 b/s/Hz and without optical filtering," Proc. ECOC 2009 (2009).
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  21. G. Gavioli, "100 Gb/s WDM NRZ-PM-QPSK long-haul transmission experiment over installed fiber probing non-linear reach with and without DCUs," Proc. ECOC 2009 (2009).
  22. D. van den Borne, V. A. J. M. Sleiffer, M. S. Alfiad, S. L. Jansen, T. Wuth, "POLMUX-QPSK modulation and coherent detection: The challenge of long-haul 100 G transmission," Proc. ECOC 2009 (2009).
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  25. Y. Han, G. Li, "Coherent optical communication using polarization multiple-input-multiple-output," Opt. Exp. 13, 7527-7534 (2005).
  26. S. Benedetto, E. Biglieri, Principles of Digital Transmission: With Wireless Applications (Kluwer, 1999).
  27. A. Carena, G. Bosco, V. Curri, "Coherent polarization-multiplexed formats: Receiver requirements and mitigation of fiber non-linear effects," Proc. ECOC 2010 (2010).
  28. V. Curri, P. Poggiolini, G. Bosco, A. Carena, F. Forghieri, "Performance evaluation of long-haul 111 Gb/s PM-QPSK transmission over different fiber types," IEEE Photon. Technol. Lett. .

2010 (4)

B. Zhu, X. Liu, S. Chandrasekhar, D. W. Peckham, R. Lingle, Jr."Ultra-long-haul transmission of 1.2-Tb/s multicarrier no-guard-interval CO-OFDM superchannel using ultra-large-area fiber," IEEE Photon. Technol. Lett. 22, 826-828 (2010).

G. Bosco, A. Carena, V. Curri, P. Poggiolini, F. Forghieri, "Performance limits of Nyquist-WDM and CO-OFDM in high-speed PM-QPSK systems," IEEE Photon. Technol. Lett. 22, 1129-1131 (2010).

A. Carena, V. Curri, P. Poggiolini, G. Bosco, F. Forghieri, "Maximum reach versus transmission capacity for Terabit superchannels based on 27.75 Gbaud PM-QPSK, PM-8QAM or PM-16QAM," IEEE Photon. Technol. Lett. 22, 829-831 (2010).

X. Liu, "Multi-carrier coherent receiver based on a shared optical hybrid and a cyclic AWG array for Terabit/s optical transmission," IEEE Photon. J. 2, 330-337 (2010).

2009 (3)

G. Charlet, "Transmission of 16.4-bit/s capacity over 2550 km using PDM QPSK modulation format and coherent receiver," J. Lightw. Technol. 27, 153-157 (2009).

S. Chandrasekhar, X. Liu, "Experimental investigation on the performance of closely spaced multi-carrier PDM-QPSK with digital coherent detection," Opt. Exp. 17, 21350-21361 (2009).

K. Roberts, M. O'Sullivan, K. Wu, H. Sun, A. Awadalla, D. J. Krause, C. Laperle, "Performance of dual-polarization QPSK for optical transport systems," J. Lightw. Technol. 27, 3546-3559 (2009).

2008 (2)

V. Curri, P. Poggiolini, A. Carena, F. Forghieri, "Dispersion compensation and mitigation of non-linear effects in 111 Gb/s WDM coherent PM-QPSK systems," IEEE Photon. Technol. Lett. 20, 1473-1475 (2008).

A. Carena, V. Curri, P. Poggiolini, F. Forghieri, "Dynamic range of single-ended detection receivers for 100 GE coherent PM-QPSK," IEEE Phot. Technol. Lett. 20, 1281-1283 (2008).

2005 (1)

Y. Han, G. Li, "Coherent optical communication using polarization multiple-input-multiple-output," Opt. Exp. 13, 7527-7534 (2005).

1989 (1)

D. Hoffman, H. Heidrich, G. Wenke, R. Langenhorst, E. Dietrich, "Integrated optics eight-port 90$^{\circ}$ hybrid on LiNbO3," J. Lightw. Technol. 7, 794-798 (1989).

IEEE Phot. Technol. Lett. (1)

A. Carena, V. Curri, P. Poggiolini, F. Forghieri, "Dynamic range of single-ended detection receivers for 100 GE coherent PM-QPSK," IEEE Phot. Technol. Lett. 20, 1281-1283 (2008).

IEEE Photon. J. (1)

X. Liu, "Multi-carrier coherent receiver based on a shared optical hybrid and a cyclic AWG array for Terabit/s optical transmission," IEEE Photon. J. 2, 330-337 (2010).

IEEE Photon. Technol. Lett. (5)

V. Curri, P. Poggiolini, A. Carena, F. Forghieri, "Dispersion compensation and mitigation of non-linear effects in 111 Gb/s WDM coherent PM-QPSK systems," IEEE Photon. Technol. Lett. 20, 1473-1475 (2008).

V. Curri, P. Poggiolini, G. Bosco, A. Carena, F. Forghieri, "Performance evaluation of long-haul 111 Gb/s PM-QPSK transmission over different fiber types," IEEE Photon. Technol. Lett. .

B. Zhu, X. Liu, S. Chandrasekhar, D. W. Peckham, R. Lingle, Jr."Ultra-long-haul transmission of 1.2-Tb/s multicarrier no-guard-interval CO-OFDM superchannel using ultra-large-area fiber," IEEE Photon. Technol. Lett. 22, 826-828 (2010).

G. Bosco, A. Carena, V. Curri, P. Poggiolini, F. Forghieri, "Performance limits of Nyquist-WDM and CO-OFDM in high-speed PM-QPSK systems," IEEE Photon. Technol. Lett. 22, 1129-1131 (2010).

A. Carena, V. Curri, P. Poggiolini, G. Bosco, F. Forghieri, "Maximum reach versus transmission capacity for Terabit superchannels based on 27.75 Gbaud PM-QPSK, PM-8QAM or PM-16QAM," IEEE Photon. Technol. Lett. 22, 829-831 (2010).

J. Lightw. Technol. (3)

G. Charlet, "Transmission of 16.4-bit/s capacity over 2550 km using PDM QPSK modulation format and coherent receiver," J. Lightw. Technol. 27, 153-157 (2009).

K. Roberts, M. O'Sullivan, K. Wu, H. Sun, A. Awadalla, D. J. Krause, C. Laperle, "Performance of dual-polarization QPSK for optical transport systems," J. Lightw. Technol. 27, 3546-3559 (2009).

D. Hoffman, H. Heidrich, G. Wenke, R. Langenhorst, E. Dietrich, "Integrated optics eight-port 90$^{\circ}$ hybrid on LiNbO3," J. Lightw. Technol. 7, 794-798 (1989).

Opt. Exp. (2)

Y. Han, G. Li, "Coherent optical communication using polarization multiple-input-multiple-output," Opt. Exp. 13, 7527-7534 (2005).

S. Chandrasekhar, X. Liu, "Experimental investigation on the performance of closely spaced multi-carrier PDM-QPSK with digital coherent detection," Opt. Exp. 17, 21350-21361 (2009).

Other (16)

I. Dedic, "56 Gs/s ADC: Enabling 100 GbE," Proc. OFC 2010 (2010).

Forward Error Correction for High Bit Rate DWDM Submarine Systems, ITU-T G.975.1 (2004).

J. Yu, X. Zhou, M. Huang, "8$\,{\times}\,$114 Gbit/s, 25 GHz-spaced, PolMux-RZ-8QAM straight-line transmission over 800 km of SSMF," Proc. ECOC 2009 (2009).

A. H. Gnauck, "10$\,{\times}\,$112-Gb/s PDM 16-QAM transmission over 1022 km of SSMF with a spectral efficiency of 4.1 b/s/Hz and without optical filtering," Proc. ECOC 2009 (2009).

G. Charlet, "Transmission of 81 channels at 40 Gbit/s over a transpacific-distance erbium-only link, using PDM-BPSK modulation, coherent detection, and a new large effective area fibre," Proc. ECOC 2008 (2008).

R.-J. Essiambre, G. Foschini, P. J. Winzer, G. Kramer, "Capacity limits of fiber fiber-optic communication systems," Proc. OFC 2009 (2009).

Y. Ma, Q. Yang, Y. Tang, S. Chen, W. Shieh, "1-Tb/s per channel coherent optical OFDM transmission with subwavelength bandwidth access," Proc. OFC 2009 (2009).

R. Dischler, F. Buchali, "Transmission of 1.2 Tb/s continuous waveband PDM-OFDM-FDM signal with spectral efficiency of 3.3 bit/s/Hz over 400 km of SSMF," Proc. OFC 2009 (2009).

S. Chandrasekhar, X. Liu, B. Zhu, D. W. Peckham, "Transmission of a 1.2-Tb/s 24-carrier no-guard-interval coherent OFDM superchannel over 7200-km of ultra-large-area fiber," Proc. ECOC 2009 (2009).

G. Gavioli, "Investigation of the impact of ultra-narrow carrier spacing on the transmission of a 10-carrier 1 Tb/s superchannel," Proc. OFC 2010 (2010).

E. Torrengo, "Transoceanic PM-QPSK Terabit superchannel transmission experiments at baud-rate subcarrier spacing," Proc. ECOC 2010 (2010).

J.-X. Cai, "Transmission of 96$\,{\times}\,$100 G pre-filtered PDM-RZ-QPSK channels with 300% spectral efficiency over 10 608 km and 400% spectral efficiency over 4 368 km," Proc. OFC 2010 (2010).

S. Benedetto, E. Biglieri, Principles of Digital Transmission: With Wireless Applications (Kluwer, 1999).

A. Carena, G. Bosco, V. Curri, "Coherent polarization-multiplexed formats: Receiver requirements and mitigation of fiber non-linear effects," Proc. ECOC 2010 (2010).

G. Gavioli, "100 Gb/s WDM NRZ-PM-QPSK long-haul transmission experiment over installed fiber probing non-linear reach with and without DCUs," Proc. ECOC 2009 (2009).

D. van den Borne, V. A. J. M. Sleiffer, M. S. Alfiad, S. L. Jansen, T. Wuth, "POLMUX-QPSK modulation and coherent detection: The challenge of long-haul 100 G transmission," Proc. ECOC 2009 (2009).

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