Abstract

We experimentally demonstrated the application in ultrahigh spectral density long-haul optical systems of tight prefiltering to generate “quasi-Nyquist wavelength division multiplexing” signals together with the use of pure-silica core fiber and hybrid Raman/erbium-doped fiber amplification. The transmission of polarization-multiplexed quadrature-amplitude modulation with 8 symbols (PM-8QAM) at 138 Gb/s and channel spacing equal to 1.22 x (symbol rate) was demonstrated, reaching over 4000 km at net spectral efficiency (SE) of 4.1 b/s/Hz. In our experiment, we achieved to date highest per-carrier symbol rate (23 Gbaud), SE (4.1 b/s/Hz), and (SE) x (distance) product (16655 b/s/Hz·km) for non-orthogonal frequency-division multiplexing transmission using PM-8QAM modulation.

© 2011 IEEE

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  1. Y. Ma, "1-Tb/s per channel coherent optical OFDM transmission with subwavelength bandwidth access," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2009) Paper PDPC1.
  2. 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," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2009) Paper PDPC2.
  3. 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," presented at the Eur. Conf. Opt. Commun. ViennaAustria (2009) Paper PD2.6.
  4. G. Gavioli, "Investigation of the impact of ultra-narrow carrier spacing on the transmission of a 10-carrier 1Tb/s superchannel," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2010) Paper OThD3.
  5. R. Freund, "Single- and multi-carrier techniques to build up Tb/s per channel transmission systems," presented at the Int. Conf. Transparent Opt. Netw. RomeItaly (2010) Paper Tu.D1.4.
  6. X. Liu, S. Chandrasekhar, B. Zhu, P. J. Winzer, D. W. Peckham, "448-Gb/s reduced-guard-interval CO-OFDM transmission over 2000 km of ultra-large-area fiber and five 80-GHz-Grid ROADM," J. Lightw. Technol. 29, 483-490 (2011).
  7. R. W. Chang, "Synthesis of band-limited orthogonal signals for multichannel data transmission," J. Bell Syst. Tech. 45, 1775-1796 (1966).
  8. S. Weinstein, P. Ebert, "Data transmission by frequency-division multiplexing using the discrete Fourier transform," IEEE Trans. Commun. 19, 628-634 (1971).
  9. J.-X. Cai, "Transmission of 96$\,\times\,$100 G pre-filtered PDM-RZ-QPSK channels with 300% spectral efficiency over 10608 km and 400% spectral efficiency over 4368 km," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2010) Paper PDPB10.
  10. E. Torrengo, "Transoceanic PM-QPSK Terabit superchannel transmission experiments at baud-rate subcarrier spacing," presented at the Eur. Conf. Opt. Commun. TorinoItaly (2010) Paper We.7.C.2.
  11. A. H. Gnauck, "10$\,\times\,$112-Gb/s PDM 16-QAM transmission over 630 km of fiber with 6.2-b/s/Hz spectral efficiency," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2009) Paper PDPB8.
  12. Y. Cai, "High spectral efficiency long-haul transmission with pre-filtering and maximum a posteriori probability detection," presented at the Eur. Conf. Opt. Commun. TorinoItaly (2010) Paper We.7.C.4.
  13. J. Renaudier, "Nonlinear tolerance of ultra-densely spaced 100 Gb/s coherent PDM-QPSK channels," presented at the Eur. Conf. Opt. Commun. TorinoItaly (2010) Paper Mo.2.C.3.
  14. G. Bosco, A. Carena, V. Curri, P. Poggiolini, E. Torrengo, F. Forghieri, "Investigation on the robustness of a Nyquist-WDM terabit superchannel to transmitter and receiver non-idealities," presented at the Eur. Conf. Opt. Commun. TorinoItaly (2010) Paper Tu.3.A.4.
  15. Y. Yamamoto, M. Hirano, K. Kuwahara, T. Sasaki, "OSNR-enhancing pure-silica-core fiber with large effective area and low attenuation," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2010) Paper OTuI2.
  16. M. Scholten, "Enhanced FEC for 40 G/100 G," presented at the Eur. Conf. Opt. Commun. ViennaAustria (2009) Paper WS1-06.
  17. http://www.vitesse.com/products/product.php?number=VSC9804.
  18. G. Bosco, A. Carena, V. Curri, P. Poggiolini, F. Forghieri, "Performance limits of Nyquist-WDM and CO-OFDM in high-speed PM-QPSK systems," IEEE Photon. Technol. Lett. 22, 1129-1131 (2010).
  19. J. Yu, X. Zhou, M. Huang, "8$\,\times\,$114 Gbit/s, 25 GHz Spaced, PolMux-RZ-8QAM straight-line transmission over 800 km of SSMF," presented at the Eur. Conf. Opt. Commun. ViennaAustria (2009) Paper P4.02.
  20. J. G. Proakis, Digital Communications .
  21. G. Bosco, "Joint DGD, PDL and chromatic dispersion estimation in ultra-long-haul WDM transmission experiments with coherent receivers," presented at the Proc. Eur. Conf. Opt. Commun. TorinoItaly (2010) Paper Th.10.A.2.
  22. X. Zhou, "Transmission of 32-Tb/s capacity over 580 km using RZ-shaped PDM-8QAM modulation format and cascaded multimodulus blind equalization algorithm," J. Lightw. Technol. 28, 456-465 (2010).
  23. A. Leven, "Frequency estimation in intradyne reception," IEEE Photon. Technol. Lett. 19, 366-368 (2007).

2011 (1)

X. Liu, S. Chandrasekhar, B. Zhu, P. J. Winzer, D. W. Peckham, "448-Gb/s reduced-guard-interval CO-OFDM transmission over 2000 km of ultra-large-area fiber and five 80-GHz-Grid ROADM," J. Lightw. Technol. 29, 483-490 (2011).

2010 (2)

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).

X. Zhou, "Transmission of 32-Tb/s capacity over 580 km using RZ-shaped PDM-8QAM modulation format and cascaded multimodulus blind equalization algorithm," J. Lightw. Technol. 28, 456-465 (2010).

2007 (1)

A. Leven, "Frequency estimation in intradyne reception," IEEE Photon. Technol. Lett. 19, 366-368 (2007).

1971 (1)

S. Weinstein, P. Ebert, "Data transmission by frequency-division multiplexing using the discrete Fourier transform," IEEE Trans. Commun. 19, 628-634 (1971).

1966 (1)

R. W. Chang, "Synthesis of band-limited orthogonal signals for multichannel data transmission," J. Bell Syst. Tech. 45, 1775-1796 (1966).

IEEE Photon. Technol. Lett. (2)

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. Leven, "Frequency estimation in intradyne reception," IEEE Photon. Technol. Lett. 19, 366-368 (2007).

IEEE Trans. Commun. (1)

S. Weinstein, P. Ebert, "Data transmission by frequency-division multiplexing using the discrete Fourier transform," IEEE Trans. Commun. 19, 628-634 (1971).

J. Bell Syst. Tech. (1)

R. W. Chang, "Synthesis of band-limited orthogonal signals for multichannel data transmission," J. Bell Syst. Tech. 45, 1775-1796 (1966).

J. Lightw. Technol. (2)

X. Liu, S. Chandrasekhar, B. Zhu, P. J. Winzer, D. W. Peckham, "448-Gb/s reduced-guard-interval CO-OFDM transmission over 2000 km of ultra-large-area fiber and five 80-GHz-Grid ROADM," J. Lightw. Technol. 29, 483-490 (2011).

X. Zhou, "Transmission of 32-Tb/s capacity over 580 km using RZ-shaped PDM-8QAM modulation format and cascaded multimodulus blind equalization algorithm," J. Lightw. Technol. 28, 456-465 (2010).

Other (17)

J.-X. Cai, "Transmission of 96$\,\times\,$100 G pre-filtered PDM-RZ-QPSK channels with 300% spectral efficiency over 10608 km and 400% spectral efficiency over 4368 km," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2010) Paper PDPB10.

E. Torrengo, "Transoceanic PM-QPSK Terabit superchannel transmission experiments at baud-rate subcarrier spacing," presented at the Eur. Conf. Opt. Commun. TorinoItaly (2010) Paper We.7.C.2.

A. H. Gnauck, "10$\,\times\,$112-Gb/s PDM 16-QAM transmission over 630 km of fiber with 6.2-b/s/Hz spectral efficiency," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2009) Paper PDPB8.

Y. Cai, "High spectral efficiency long-haul transmission with pre-filtering and maximum a posteriori probability detection," presented at the Eur. Conf. Opt. Commun. TorinoItaly (2010) Paper We.7.C.4.

J. Renaudier, "Nonlinear tolerance of ultra-densely spaced 100 Gb/s coherent PDM-QPSK channels," presented at the Eur. Conf. Opt. Commun. TorinoItaly (2010) Paper Mo.2.C.3.

G. Bosco, A. Carena, V. Curri, P. Poggiolini, E. Torrengo, F. Forghieri, "Investigation on the robustness of a Nyquist-WDM terabit superchannel to transmitter and receiver non-idealities," presented at the Eur. Conf. Opt. Commun. TorinoItaly (2010) Paper Tu.3.A.4.

Y. Yamamoto, M. Hirano, K. Kuwahara, T. Sasaki, "OSNR-enhancing pure-silica-core fiber with large effective area and low attenuation," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2010) Paper OTuI2.

M. Scholten, "Enhanced FEC for 40 G/100 G," presented at the Eur. Conf. Opt. Commun. ViennaAustria (2009) Paper WS1-06.

http://www.vitesse.com/products/product.php?number=VSC9804.

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," presented at the Eur. Conf. Opt. Commun. ViennaAustria (2009) Paper P4.02.

J. G. Proakis, Digital Communications .

G. Bosco, "Joint DGD, PDL and chromatic dispersion estimation in ultra-long-haul WDM transmission experiments with coherent receivers," presented at the Proc. Eur. Conf. Opt. Commun. TorinoItaly (2010) Paper Th.10.A.2.

Y. Ma, "1-Tb/s per channel coherent optical OFDM transmission with subwavelength bandwidth access," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2009) Paper PDPC1.

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," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2009) Paper PDPC2.

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," presented at the Eur. Conf. Opt. Commun. ViennaAustria (2009) Paper PD2.6.

G. Gavioli, "Investigation of the impact of ultra-narrow carrier spacing on the transmission of a 10-carrier 1Tb/s superchannel," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2010) Paper OThD3.

R. Freund, "Single- and multi-carrier techniques to build up Tb/s per channel transmission systems," presented at the Int. Conf. Transparent Opt. Netw. RomeItaly (2010) Paper Tu.D1.4.

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