Abstract

We have realized the first field transmission of 8 × 216.8-Gb/s Nyquist wavelength-division-multiplexing (N-WDM) signals over 1750-km G.652 fiber consisting of 950-km real and 800-km lab fibers with erbium-doped fiber amplifier (EDFA)-only amplification. The average loss per span is 21.6 dB. Each channel is modulated with 54.2-Gbaud (216.8-Gb/s) polarization-division-multiplexing carrier-suppressed return-to-zero quadrature-phase-shift-keying (PDM-CSRZ-QPSK) data on a 50-GHz grid giving a record spectral efficiency (SE) of 4 b/s/Hz. Digital post filtering and 1-bit maximum likelihood sequence estimation (MLSE) are introduced into the offline digital signal processing (DSP) at the receiver to suppress noise, linear crosstalk and filtering effects. We have also investigated the co-transmission of 200 G PDM-CSRZ-QPSK and 200 G PDM 16-ary quadrature-amplitude-modulation (PDM-16 QAM) signals on a 50-GHz grid, and found that PDM-CSRZ-QPSK signals have better bit-error-rate (BER) performance for both back-to-back and 700-km transmission cases. Meanwhile, PDM-16 QAM signals are subject to larger crosstalk from the neighboring Nyquist QPSK channels.

© 2012 IEEE

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  1. C. Xie, G. Raybon, P. J. Winzer, "Hybrid 224-Gb/s and 112-Gb/s PDM-QPSK transmission at 50-GHz channel spacing over 1200-km dispersion managed LEAF® spans and 3 ROADMs," Proc. OFC 2011 .
  2. X. Zhou, "64-Tb/s, 8 b/s/Hz, PDM-36 QAM transmission over 320 km using both pre- and post-transmission digital signal processing," J. Lightw. Technol. 29, 571-577 (2011).
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  4. A. H. Gnauck, P. J. Winzer, A. Konczyowska, F. Jorge, J.-Y. Dupuy, M. Riet, G. Charlet, D. W. Peckham, "Generation and transmission of 21.4-Gbaud PDM 64-QAM using a high-power DAC driving a single I/Q modulator," Proc. OFC 2011 .
  5. 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, 547-554.2 (2010).
  6. R. Dischler, "Transmission of 3 × 253-Gb/s OFDM-superchannels over 764 km field deployed single mode fibers," Proc. OFC 2010 .
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  8. J. Yu, X. Zhou, M. F. Huang, D. Qian, L. Xu, P. Ji, "Transmission of hybrid 112 and 44 Gb/s polmux-QPSK in 25 GHz channel spacing over 1600 km SSMF employing digital coherent detection and EDFA-only amplification," Proc. OFC 2009 .
  9. A. Sano, T. Kobayashi, A. Matsuura, S. Yamamoto, S. Yamanaka, E. Yoshida, Y. Miyamoto, M. Matsui, M. Mizoguchi, T. Mizuno, "100 × 120-Gb/s PDM 64-QAM transmission over 160 km using linewidth-tolerant pilotless digital coherent detection," Proc. ECOC 2010 .
  10. C. R. S. Fludger, "Coherent equalization and POLMUX-RZ-DQPSK for robust 100-GE transmission," J. Lightw. Technol. 26, 64-72 (2008).
  11. J. Yu, "112.8-Gb/s PM-RZ-64 QAM optical signal generation and transmission on a 12.5 GHz WDM grid," Proc. OFC 2010 .
  12. Z. Dong, J. Yu, C.-H. Chien, S. Shi, Y. Xia, C. Ge, "24 Tb/s (24 × 1.3 Tb/s) WDM transmission of terabit PDM-CO-OFDM superchannels over 2400 km SMF-28," Proc. OECC 2011 .
  13. Y.-K. Huang, E. Ip, M.-F. Huang, B. Zhu, P. N. Ji, Y. Shao, D. W. Peckham, R. Lingle, T. Wang, "10 × 456-Gb/s DP-16 QAM transmission over 8 × 100 km of ULAF using coherent detection with a 30-GHz analog-to-digital converter," Proc. OECC 2010 .
  14. J. Martensson, B.-E. Olsson, A. Djupsjobacka, A. Alping, "RF-assisted DP-16-QAM 112 Gbit/s transmission over 824 km of G. 652 fiber with and without inline dispersion compensation," IEEE Photon. Technol. Lett. 24, 140-142 (2012).
  15. A. Sano, H. Masuda, T. Kobayashi, M. Fujiwara, K. Horikoshi, E. Yoshida, Y. Miyamoto, M. Matsui, M. Mizoguchi, H. Yamazaki, Y. Sakamaki, H. Ishii, "Ultra-high capacity WDM transmission using spectrally-efficient PDM 16-QAM modulation and C-and extended L-band wideband optical amplification," J. Lightw. Technol 29, 578-586 (2011).
  16. P. J. Winzer, A. H. Gnauck, G. Raybon, M. Schnecker, P. J. Pupalaikis, "56-Gbaud PDM-QPSK: Coherent detection and 2 500-km transmission," Pro. ECOC 2009 () pp. 1-2.
  17. A. H. Gnauck, P. J. Winzer, G. Raybon, M. Schnecker, P. J. Pupalaikis, "10 × 224-Gb/s WDM transmission of 56-Gbaud PDM-QPSK signals over 1890 km of fiber," IEEE Photon. Technol. Lett. 22, 954-956 (2010).
  18. J. G. Proakis, Digital Communications (4th Edition) (McGraw-Hill, 2000).
  19. J.-X. Cai, Y. Cai, C. R. Davidson, D. G. Foursa, A. J. Lucero, O. V. Sinkin, W. W. Patterson, A. N. Pilipetskii, G. Mohs, N. S. Bergano, "Transmission of 96 × 100-Gb/s bandwidth-constrained PDM-RZ-QPSK channels with 300% spectral efficiency over 10610 km and 400% spectral efficiency over 4370 km," J. Lightw Technol. 29, 491-498 (2011).
  20. J.-X. Cai, C. R. Davidson, A. Lucero, H. Zhang, D. G. Foursa, O. V. Sinkin, W. W. Patterson, A. N. Pilipetskii, G. Mohs, N. S. Bergano, "20 Tbit/s transmission over 6860 km with sub-Nyquist channel spacing," J. Lightw. Technol. 30, 651-657 (2012).
  21. J. Li, E. Tipsuwannakul, M. Karlsson, P. A. Andrekson, "Low complexity duobinary signaling and detection for sensitivity improvement in Nyquist-WDM coherent system," Proc. OFC 2012 (2012).
  22. I. Lyubomirsky, "Quadrature duobinary for high-spectral efficiency 100 G transmission," J. Lightw. Technol. 28, 91-96 (2010).
  23. J. Li, Z. Tao, H. Zhang, W. Yan, T. Hoshida, J. C. Rasmussen, "Spectrally efficient quadrature duobinary coherent systems with symbol-rate digital signal processing," J. Lightw. Technol. 29, 1098-1104 (2011).
  24. J. Li, Z. Tao, H. Zhang, W. Yan, T. Hoshida, J. C. Rasmussen, "Enhanced digital coherent receiver for high spectral-efficiency dualpolarization quadrature duobinary systems," Proc. ECOC 2010 () pp. 1-3.
  25. Forward Error Correction for High Bit-Rate DWDM Submarine Systems, (2004) ITU-T Recommendation G.975.1.

2012 (2)

J. Martensson, B.-E. Olsson, A. Djupsjobacka, A. Alping, "RF-assisted DP-16-QAM 112 Gbit/s transmission over 824 km of G. 652 fiber with and without inline dispersion compensation," IEEE Photon. Technol. Lett. 24, 140-142 (2012).

J.-X. Cai, C. R. Davidson, A. Lucero, H. Zhang, D. G. Foursa, O. V. Sinkin, W. W. Patterson, A. N. Pilipetskii, G. Mohs, N. S. Bergano, "20 Tbit/s transmission over 6860 km with sub-Nyquist channel spacing," J. Lightw. Technol. 30, 651-657 (2012).

2011 (4)

J.-X. Cai, Y. Cai, C. R. Davidson, D. G. Foursa, A. J. Lucero, O. V. Sinkin, W. W. Patterson, A. N. Pilipetskii, G. Mohs, N. S. Bergano, "Transmission of 96 × 100-Gb/s bandwidth-constrained PDM-RZ-QPSK channels with 300% spectral efficiency over 10610 km and 400% spectral efficiency over 4370 km," J. Lightw Technol. 29, 491-498 (2011).

J. Li, Z. Tao, H. Zhang, W. Yan, T. Hoshida, J. C. Rasmussen, "Spectrally efficient quadrature duobinary coherent systems with symbol-rate digital signal processing," J. Lightw. Technol. 29, 1098-1104 (2011).

A. Sano, H. Masuda, T. Kobayashi, M. Fujiwara, K. Horikoshi, E. Yoshida, Y. Miyamoto, M. Matsui, M. Mizoguchi, H. Yamazaki, Y. Sakamaki, H. Ishii, "Ultra-high capacity WDM transmission using spectrally-efficient PDM 16-QAM modulation and C-and extended L-band wideband optical amplification," J. Lightw. Technol 29, 578-586 (2011).

X. Zhou, "64-Tb/s, 8 b/s/Hz, PDM-36 QAM transmission over 320 km using both pre- and post-transmission digital signal processing," J. Lightw. Technol. 29, 571-577 (2011).

2010 (3)

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, 547-554.2 (2010).

A. H. Gnauck, P. J. Winzer, G. Raybon, M. Schnecker, P. J. Pupalaikis, "10 × 224-Gb/s WDM transmission of 56-Gbaud PDM-QPSK signals over 1890 km of fiber," IEEE Photon. Technol. Lett. 22, 954-956 (2010).

I. Lyubomirsky, "Quadrature duobinary for high-spectral efficiency 100 G transmission," J. Lightw. Technol. 28, 91-96 (2010).

2008 (1)

C. R. S. Fludger, "Coherent equalization and POLMUX-RZ-DQPSK for robust 100-GE transmission," J. Lightw. Technol. 26, 64-72 (2008).

IEEE Photon. Technol. Lett. (2)

J. Martensson, B.-E. Olsson, A. Djupsjobacka, A. Alping, "RF-assisted DP-16-QAM 112 Gbit/s transmission over 824 km of G. 652 fiber with and without inline dispersion compensation," IEEE Photon. Technol. Lett. 24, 140-142 (2012).

A. H. Gnauck, P. J. Winzer, G. Raybon, M. Schnecker, P. J. Pupalaikis, "10 × 224-Gb/s WDM transmission of 56-Gbaud PDM-QPSK signals over 1890 km of fiber," IEEE Photon. Technol. Lett. 22, 954-956 (2010).

J. Lightw Technol. (2)

J.-X. Cai, Y. Cai, C. R. Davidson, D. G. Foursa, A. J. Lucero, O. V. Sinkin, W. W. Patterson, A. N. Pilipetskii, G. Mohs, N. S. Bergano, "Transmission of 96 × 100-Gb/s bandwidth-constrained PDM-RZ-QPSK channels with 300% spectral efficiency over 10610 km and 400% spectral efficiency over 4370 km," J. Lightw Technol. 29, 491-498 (2011).

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, 547-554.2 (2010).

J. Lightw. Technol (1)

A. Sano, H. Masuda, T. Kobayashi, M. Fujiwara, K. Horikoshi, E. Yoshida, Y. Miyamoto, M. Matsui, M. Mizoguchi, H. Yamazaki, Y. Sakamaki, H. Ishii, "Ultra-high capacity WDM transmission using spectrally-efficient PDM 16-QAM modulation and C-and extended L-band wideband optical amplification," J. Lightw. Technol 29, 578-586 (2011).

J. Lightw. Technol. (5)

X. Zhou, "64-Tb/s, 8 b/s/Hz, PDM-36 QAM transmission over 320 km using both pre- and post-transmission digital signal processing," J. Lightw. Technol. 29, 571-577 (2011).

J.-X. Cai, C. R. Davidson, A. Lucero, H. Zhang, D. G. Foursa, O. V. Sinkin, W. W. Patterson, A. N. Pilipetskii, G. Mohs, N. S. Bergano, "20 Tbit/s transmission over 6860 km with sub-Nyquist channel spacing," J. Lightw. Technol. 30, 651-657 (2012).

C. R. S. Fludger, "Coherent equalization and POLMUX-RZ-DQPSK for robust 100-GE transmission," J. Lightw. Technol. 26, 64-72 (2008).

I. Lyubomirsky, "Quadrature duobinary for high-spectral efficiency 100 G transmission," J. Lightw. Technol. 28, 91-96 (2010).

J. Li, Z. Tao, H. Zhang, W. Yan, T. Hoshida, J. C. Rasmussen, "Spectrally efficient quadrature duobinary coherent systems with symbol-rate digital signal processing," J. Lightw. Technol. 29, 1098-1104 (2011).

Other (15)

J. Li, Z. Tao, H. Zhang, W. Yan, T. Hoshida, J. C. Rasmussen, "Enhanced digital coherent receiver for high spectral-efficiency dualpolarization quadrature duobinary systems," Proc. ECOC 2010 () pp. 1-3.

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

C. Xie, G. Raybon, P. J. Winzer, "Hybrid 224-Gb/s and 112-Gb/s PDM-QPSK transmission at 50-GHz channel spacing over 1200-km dispersion managed LEAF® spans and 3 ROADMs," Proc. OFC 2011 .

J. Yu, "112.8-Gb/s PM-RZ-64 QAM optical signal generation and transmission on a 12.5 GHz WDM grid," Proc. OFC 2010 .

Z. Dong, J. Yu, C.-H. Chien, S. Shi, Y. Xia, C. Ge, "24 Tb/s (24 × 1.3 Tb/s) WDM transmission of terabit PDM-CO-OFDM superchannels over 2400 km SMF-28," Proc. OECC 2011 .

Y.-K. Huang, E. Ip, M.-F. Huang, B. Zhu, P. N. Ji, Y. Shao, D. W. Peckham, R. Lingle, T. Wang, "10 × 456-Gb/s DP-16 QAM transmission over 8 × 100 km of ULAF using coherent detection with a 30-GHz analog-to-digital converter," Proc. OECC 2010 .

R. Dischler, "Transmission of 3 × 253-Gb/s OFDM-superchannels over 764 km field deployed single mode fibers," Proc. OFC 2010 .

J.-X. Cai, Y. Cai, Y. Sun, C. R. Davidson, D. G. Foursa, A. Lucero, O. Sinkin, W. Patterson, A. Pilipetskii, G. Mohs, N. S. Bergano, "112 × 112 Gb/s transmission over 9 360 km with channel spacing set to the baud rate (360% spectral efficiency)," Proc. ECOC 2010 () pp. 1-3.

J. Yu, X. Zhou, M. F. Huang, D. Qian, L. Xu, P. Ji, "Transmission of hybrid 112 and 44 Gb/s polmux-QPSK in 25 GHz channel spacing over 1600 km SSMF employing digital coherent detection and EDFA-only amplification," Proc. OFC 2009 .

A. Sano, T. Kobayashi, A. Matsuura, S. Yamamoto, S. Yamanaka, E. Yoshida, Y. Miyamoto, M. Matsui, M. Mizoguchi, T. Mizuno, "100 × 120-Gb/s PDM 64-QAM transmission over 160 km using linewidth-tolerant pilotless digital coherent detection," Proc. ECOC 2010 .

J. Li, E. Tipsuwannakul, M. Karlsson, P. A. Andrekson, "Low complexity duobinary signaling and detection for sensitivity improvement in Nyquist-WDM coherent system," Proc. OFC 2012 (2012).

J. G. Proakis, Digital Communications (4th Edition) (McGraw-Hill, 2000).

A. Sano, T. Kobayashi, K. Ishihara, H. Masuda, S. Yamamoto, K. Mori, E. Yamazaki, E. Yoshida, Y. Miyamoto, T. Yamada, H. Yamazaki, "240-Gb/s polarization-multiplexed 64-QAM modulation and blind detection using PLC-LN hybrid integrated modulator and digital coherent receiver," Proc. ECOC 2009 .

A. H. Gnauck, P. J. Winzer, A. Konczyowska, F. Jorge, J.-Y. Dupuy, M. Riet, G. Charlet, D. W. Peckham, "Generation and transmission of 21.4-Gbaud PDM 64-QAM using a high-power DAC driving a single I/Q modulator," Proc. OFC 2011 .

P. J. Winzer, A. H. Gnauck, G. Raybon, M. Schnecker, P. J. Pupalaikis, "56-Gbaud PDM-QPSK: Coherent detection and 2 500-km transmission," Pro. ECOC 2009 () pp. 1-2.

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