Abstract

We discuss the generation, wavelength-division-multiplexed (WDM) long-haul transmission, and coherent detection of 224-Gb/s polarization-division-multiplexed (PDM) 16-ary quadrature amplitude modulation (16-QAM) at a line rate of 28 Gbaud. We measure a required optical signal-to-noise ratio of 23.4 dB (0.1-nm reference bandwidth; $10^{- 3}$ bit-error ratio), 3.4-dB off the theoretical limit. Using ultra-large-area fiber, we achieve 2000-km single-channel transmission. We also demonstrate 1200-km WDM transmission on a 50-GHz grid (4-b/s/Hz spectral efficiency), including three passes through a wavelength-selective switch.

© 2010 IEEE

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  1. 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).
  2. 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).
  3. X. Zhou, J. Yu, "200-Gb/s PDM-16QAM generation using a new synthesizing method," Proc. ECOC (2009).
  4. A. Sano, H. Masuda, T. Kobayashi, M. Fujiwara, K. Horikoshi, E. Yoshida, Y. Miyamoto, M. Matsui, M. Mizoguchi, H. Yamazaki, Y. Sakamaki, H. Ishii, "69.1-Tb/s (432$\,\times\,$171-Gb/s) C- and extended L-band transmission over 240 km using PDM-16-QAM modulation and digital coherent detection," Proc. OFC (2010).
  5. L. Molle, M. Seimetz, D.-D. Gross, R. Freund, M. Rohde, "Polarization multiplexed 20 Gbaud square 16QAM long-haul transmission over 1120 km using EDFA amplification," Proc. ECOC (2009).
  6. T. Kobayashi, A. Sano, H. Masuda, K. Ishihara, E. Yoshida, Y. Miyamoto, H. Yamazaki, T. Yamada, "160-Gb/s polarization-multiplexed 16-QAM long-haul transmission over 3 123 km using digital coherent receiver with digital PLL based frequency offset compensator," Proc. OFC (2010).
  7. P. J. Winzer, A. H. Gnauck, G. Raybon, M. Schnecker, P. J. Pupalaikis, "56-Gbaud PDM-QPSK: Coherent detection and 2 500-km transmission," Proc. ECOC (2009).
  8. B. Spinnler, "Complexity of algorithms for digital coherent receivers," Proceedings of ECOC (2009).
  9. C. S. R. Fludger, T. Duthel, D. van den Borne, C. Schulien, E.-D. Schmidt, T. Wuth, J. Geyer, E. De Man, G.-D. Khoe, H. de Waardt, "Coherent equalization and POLMUX-RZ-DQPSK for robust 100-GE transmission," J. Lightw. Tech. 26, 64-72 (2008).
  10. A. H. Gnauck, P. J. Winzer, S. Chandrasekhar, X. Liu, B. Zhu, D. W. Peckham, "10$\,\times\,$224-Gb/s WDM transmission of 28-Gbaud PDM 16-QAM on a 50-GHz grid over 1 200 km of fiber," Proc. OFC (2010).
  11. P. J. Winzer, A. H. Gnauck, C. R. Doerr, M. Magarini, L. L. Buhl, "Spectrally efficient long-haul optical networking using 112-Gb/s polarization-multiplexed 16-QAM," J. Lightw. Technol. 28, 547-556 (2010).
  12. S. Savory, "Digital coherent optical receivers: Algorithms and subsystems," J. Sel. Topics Quantum Electron. 16, 1164-1179 (2010).
  13. ITU-T Recommendation G.975.1 (2004) Appendix I.9.

2010 (2)

P. J. Winzer, A. H. Gnauck, C. R. Doerr, M. Magarini, L. L. Buhl, "Spectrally efficient long-haul optical networking using 112-Gb/s polarization-multiplexed 16-QAM," J. Lightw. Technol. 28, 547-556 (2010).

S. Savory, "Digital coherent optical receivers: Algorithms and subsystems," J. Sel. Topics Quantum Electron. 16, 1164-1179 (2010).

2008 (1)

C. S. R. Fludger, T. Duthel, D. van den Borne, C. Schulien, E.-D. Schmidt, T. Wuth, J. Geyer, E. De Man, G.-D. Khoe, H. de Waardt, "Coherent equalization and POLMUX-RZ-DQPSK for robust 100-GE transmission," J. Lightw. Tech. 26, 64-72 (2008).

J. Lightw. Tech. (1)

C. S. R. Fludger, T. Duthel, D. van den Borne, C. Schulien, E.-D. Schmidt, T. Wuth, J. Geyer, E. De Man, G.-D. Khoe, H. de Waardt, "Coherent equalization and POLMUX-RZ-DQPSK for robust 100-GE transmission," J. Lightw. Tech. 26, 64-72 (2008).

J. Lightw. Technol. (1)

P. J. Winzer, A. H. Gnauck, C. R. Doerr, M. Magarini, L. L. Buhl, "Spectrally efficient long-haul optical networking using 112-Gb/s polarization-multiplexed 16-QAM," J. Lightw. Technol. 28, 547-556 (2010).

J. Sel. Topics Quantum Electron. (1)

S. Savory, "Digital coherent optical receivers: Algorithms and subsystems," J. Sel. Topics Quantum Electron. 16, 1164-1179 (2010).

Other (10)

ITU-T Recommendation G.975.1 (2004) Appendix I.9.

A. H. Gnauck, P. J. Winzer, S. Chandrasekhar, X. Liu, B. Zhu, D. W. Peckham, "10$\,\times\,$224-Gb/s WDM transmission of 28-Gbaud PDM 16-QAM on a 50-GHz grid over 1 200 km of fiber," Proc. OFC (2010).

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).

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).

X. Zhou, J. Yu, "200-Gb/s PDM-16QAM generation using a new synthesizing method," Proc. ECOC (2009).

A. Sano, H. Masuda, T. Kobayashi, M. Fujiwara, K. Horikoshi, E. Yoshida, Y. Miyamoto, M. Matsui, M. Mizoguchi, H. Yamazaki, Y. Sakamaki, H. Ishii, "69.1-Tb/s (432$\,\times\,$171-Gb/s) C- and extended L-band transmission over 240 km using PDM-16-QAM modulation and digital coherent detection," Proc. OFC (2010).

L. Molle, M. Seimetz, D.-D. Gross, R. Freund, M. Rohde, "Polarization multiplexed 20 Gbaud square 16QAM long-haul transmission over 1120 km using EDFA amplification," Proc. ECOC (2009).

T. Kobayashi, A. Sano, H. Masuda, K. Ishihara, E. Yoshida, Y. Miyamoto, H. Yamazaki, T. Yamada, "160-Gb/s polarization-multiplexed 16-QAM long-haul transmission over 3 123 km using digital coherent receiver with digital PLL based frequency offset compensator," Proc. OFC (2010).

P. J. Winzer, A. H. Gnauck, G. Raybon, M. Schnecker, P. J. Pupalaikis, "56-Gbaud PDM-QPSK: Coherent detection and 2 500-km transmission," Proc. ECOC (2009).

B. Spinnler, "Complexity of algorithms for digital coherent receivers," Proceedings of ECOC (2009).

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