Abstract

The Nyquist wavelength-division-multiplexing technique (N-WDM) enables a solution to achieve high spectral efficiency (SE) in long-haul transmission systems. Compared to polarization-division-multiplexing (PDM) quadrature-phase-shift-keying modulation, multilevel modulation scheme such as PDM 64-ary quadrature amplitude modulation (64QAM) is much more sensitive to intrachannel noise and interchannel crosstalk caused by N-WDM. We experimentally demonstrated the generation and transmission of the 6 × 144-Gb/s N-WDM PDM-64QAM signal over 80-km single-mode fiber SMF-28 with erbium-doped-fiber-amplifier-only amplification. It achieved a net SE of 10 bits/s/Hz assuming 20% forward error correction overhead. This experiment was successfully enabled by digital-signal-processing (DSP) pre-equalization of transmitter-side impairments and DSP post-equalization of the channel and receiver-side impairments. Nyquist-band is considered in the pre-equalization to enhance the tolerance of the PDM-64QAM to the aggressive spectral shaping. The benefit from the proposed Nyquist-band pre-equalization scheme was also experimentally demonstrated.

© 2012 IEEE

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  1. 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. Eur. Conf. Opt. Commun. (2010) pp. 1-3.
  2. J. Yu, X. Zhou, Y.-K. Huang, S. Gupta, M.-F. Huang, T. Wang, P. Magill, "112.8-Gb/s PM-RZ-64QAM optical signal generation and transmission on a 12.5 GHz WDM grid," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2010) Paper OThM1.
  3. 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," presented at the OptoElectron. Commun. Conf. KaohsiungTaiwan (2011) Paper PDP6.
  4. G. Bosco, A. Carena, V. Curri, P. Poggiolini, F. Forghieri, "Performance limits of N-WDM and CO-OFDM in high-speed PM-QPSK systems," IEEE Photon. Technol. Lett. 22, 1129-1131 (2010).
  5. J.-X. Cai, Y. Cai, C. R. Davidson, D. G. Foursa, A. Lucero, O. Sinkin, W. Patterson, A. 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).
  6. Z. Dong, J. Yu, Z. Jia, H.-C. Chien, X. Li, G.-K. Chang, "7 × 144 Gb/s/ch N-WDM transmission over 1600-km SMF-28 using PDM-CSRZ-QPSK modulation," IEEE Photon. Technol. Lett. 24, 1157-1159 (2012).
  7. T. Kobayashi, A. Sano, A. Matsuura, M. Yoshida, T. Sakano, H. Kubota, Y. Miyamoto, K. Ishihara, M. Mizoguchi, M. Nagatani, "45.2 Tb/s C-band WDM transmission over 240 km using 538 Gb/s PDM-64QAM single carrier FDM signal with digital pilot tone," presented at the Eur. Conf. Opt. Commun. GenevaSwitzerland (2011) Paper Th.13.C.6.
  8. A. Sano, T. Kobayashi, S. Yamanaka, A. Matsuura, H. Kawakami, Y. Miyamoto, K. Ishihara, H. Masuda, "102.3-Tb/s (224 × 548-Gb/s) C- and extended L-band all-Raman transmission over 240 km using PDM-64QAM single carrier FDM with digital pilot tone," presented at the Opt. Fiber Commun. Conf. Los AngelesCA (2012) Paper PDP5C.3.
  9. X. Zhou, L. E. Nelson, R. Isaac, P. D. Magill, B. Zhu, D. W. Peckham, P. Borel, K. Carlson, "4000 km transmission of 50 GHz spaced, 10 × 494.85-Gb/s hybrid 32–64QAM using cascaded equalization and training-assisted phase recovery," presented at the Opt. Fiber Commun. Conf. Los AngelesCA (2012) Paper PDP5C.6.
  10. X. Zhou, J. Yu, "Multi-level, multi-dimensional coding for high-speed and high-spectral-efficiency optical transmission," J. Lightw. Technol. 27, 3641-3653 (2009).
  11. X. Zhou, J. Yu, M.-F. Huang, Y. Shao, T. Wang, L. Nelson, P. Magill, M. Birk, P. I. Borel, D. W. Peckham, R. Lingle, Jr.B. Zhu, "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).
  12. T. Sugihara, T. Kobayashi, Y. Konishi, S. Hirano, K. Tsutsumi, K. Yamagishi, T. Ichikawa, S. Inoue, K. Kubo, Y. Takahashi, K. Goto, T. Fujimori, K. Uto, T. Yoshida, K. Sawada, S. Kametani, H. Bessho, T. Inoue, K. Koguchi, K. Shimizu, T. Mizuochi, "43 Gb/s DQPSK pre-equalization employing 6-bit, 43 GS/s DAC integrated LSI for cascaded ROADM filtering," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2010) Paper PDPB6.
  13. R. Cigliutti, A. Nespola, D. Zeolla, G. Bosco, A. Carena, V. Curri, F. Forghieri, Y. Yamamoto, T. Sasaki, P. Poggiolini, "Ultra-long-Haul transmission of 16 × 112 Gb/s spectrally-engineered DAC-generated Nyquist-WDM PM-16 QAM channels with 1.05× (symbol-rate) frequency spacing," presented at the Opt. Fiber Commun. Conf. Los AngelesCA (2012) Paper OTh3A.3.
  14. "Hardware-efficient coherent digital receiver with feedforward carrier recovery for -QAM constellations," J. Lightw. Technol. 27, 989-999 (2009).
  15. J. Yu, Z. Jia, L. Yi, Y. Su, G.-K. Chang, T. Wang, "Optical millimeter-wave generation or up-conversion using external modulators," IEEE Photon. Technol. Lett. 18, 265-267 (2006).
  16. www.Vitesse.com 100 G CI-BCH-4TM eFEC technology.

2012 (1)

Z. Dong, J. Yu, Z. Jia, H.-C. Chien, X. Li, G.-K. Chang, "7 × 144 Gb/s/ch N-WDM transmission over 1600-km SMF-28 using PDM-CSRZ-QPSK modulation," IEEE Photon. Technol. Lett. 24, 1157-1159 (2012).

2011 (2)

J.-X. Cai, Y. Cai, C. R. Davidson, D. G. Foursa, A. Lucero, O. Sinkin, W. Patterson, A. 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).

X. Zhou, J. Yu, M.-F. Huang, Y. Shao, T. Wang, L. Nelson, P. Magill, M. Birk, P. I. Borel, D. W. Peckham, R. Lingle, Jr.B. Zhu, "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 (1)

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

2009 (2)

X. Zhou, J. Yu, "Multi-level, multi-dimensional coding for high-speed and high-spectral-efficiency optical transmission," J. Lightw. Technol. 27, 3641-3653 (2009).

"Hardware-efficient coherent digital receiver with feedforward carrier recovery for -QAM constellations," J. Lightw. Technol. 27, 989-999 (2009).

2006 (1)

J. Yu, Z. Jia, L. Yi, Y. Su, G.-K. Chang, T. Wang, "Optical millimeter-wave generation or up-conversion using external modulators," IEEE Photon. Technol. Lett. 18, 265-267 (2006).

IEEE Photon. Technol. Lett. (3)

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

Z. Dong, J. Yu, Z. Jia, H.-C. Chien, X. Li, G.-K. Chang, "7 × 144 Gb/s/ch N-WDM transmission over 1600-km SMF-28 using PDM-CSRZ-QPSK modulation," IEEE Photon. Technol. Lett. 24, 1157-1159 (2012).

J. Yu, Z. Jia, L. Yi, Y. Su, G.-K. Chang, T. Wang, "Optical millimeter-wave generation or up-conversion using external modulators," IEEE Photon. Technol. Lett. 18, 265-267 (2006).

J. Lightw. Technol. (4)

"Hardware-efficient coherent digital receiver with feedforward carrier recovery for -QAM constellations," J. Lightw. Technol. 27, 989-999 (2009).

X. Zhou, J. Yu, "Multi-level, multi-dimensional coding for high-speed and high-spectral-efficiency optical transmission," J. Lightw. Technol. 27, 3641-3653 (2009).

X. Zhou, J. Yu, M.-F. Huang, Y. Shao, T. Wang, L. Nelson, P. Magill, M. Birk, P. I. Borel, D. W. Peckham, R. Lingle, Jr.B. Zhu, "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, Y. Cai, C. R. Davidson, D. G. Foursa, A. Lucero, O. Sinkin, W. Patterson, A. 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).

Other (9)

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. Eur. Conf. Opt. Commun. (2010) pp. 1-3.

J. Yu, X. Zhou, Y.-K. Huang, S. Gupta, M.-F. Huang, T. Wang, P. Magill, "112.8-Gb/s PM-RZ-64QAM optical signal generation and transmission on a 12.5 GHz WDM grid," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2010) Paper OThM1.

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," presented at the OptoElectron. Commun. Conf. KaohsiungTaiwan (2011) Paper PDP6.

T. Kobayashi, A. Sano, A. Matsuura, M. Yoshida, T. Sakano, H. Kubota, Y. Miyamoto, K. Ishihara, M. Mizoguchi, M. Nagatani, "45.2 Tb/s C-band WDM transmission over 240 km using 538 Gb/s PDM-64QAM single carrier FDM signal with digital pilot tone," presented at the Eur. Conf. Opt. Commun. GenevaSwitzerland (2011) Paper Th.13.C.6.

A. Sano, T. Kobayashi, S. Yamanaka, A. Matsuura, H. Kawakami, Y. Miyamoto, K. Ishihara, H. Masuda, "102.3-Tb/s (224 × 548-Gb/s) C- and extended L-band all-Raman transmission over 240 km using PDM-64QAM single carrier FDM with digital pilot tone," presented at the Opt. Fiber Commun. Conf. Los AngelesCA (2012) Paper PDP5C.3.

X. Zhou, L. E. Nelson, R. Isaac, P. D. Magill, B. Zhu, D. W. Peckham, P. Borel, K. Carlson, "4000 km transmission of 50 GHz spaced, 10 × 494.85-Gb/s hybrid 32–64QAM using cascaded equalization and training-assisted phase recovery," presented at the Opt. Fiber Commun. Conf. Los AngelesCA (2012) Paper PDP5C.6.

T. Sugihara, T. Kobayashi, Y. Konishi, S. Hirano, K. Tsutsumi, K. Yamagishi, T. Ichikawa, S. Inoue, K. Kubo, Y. Takahashi, K. Goto, T. Fujimori, K. Uto, T. Yoshida, K. Sawada, S. Kametani, H. Bessho, T. Inoue, K. Koguchi, K. Shimizu, T. Mizuochi, "43 Gb/s DQPSK pre-equalization employing 6-bit, 43 GS/s DAC integrated LSI for cascaded ROADM filtering," presented at the Opt. Fiber Commun. Conf. San DiegoCA (2010) Paper PDPB6.

R. Cigliutti, A. Nespola, D. Zeolla, G. Bosco, A. Carena, V. Curri, F. Forghieri, Y. Yamamoto, T. Sasaki, P. Poggiolini, "Ultra-long-Haul transmission of 16 × 112 Gb/s spectrally-engineered DAC-generated Nyquist-WDM PM-16 QAM channels with 1.05× (symbol-rate) frequency spacing," presented at the Opt. Fiber Commun. Conf. Los AngelesCA (2012) Paper OTh3A.3.

www.Vitesse.com 100 G CI-BCH-4TM eFEC technology.

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