Abstract

In this paper we demonstrate high-baud generation and transmission of PDM-64QAM signals. The 64QAM signal is generated using one single in-phase/quadrature (I/Q) modulator driven with eight-level signals synthesized by all binary electrical inputs. With hard-decision forward error correction (HD-FEC), we first demonstrate 11.2-GBd and 22.4-GBd PDM-64QAM transmissions over 320-km standard single mode fiber (SSMF). Then we specifically introduce a long memory filter (LMF) and prove its effectiveness in reflection compensation both theoretically and experimentally. With the aid of soft-decision FEC (SD-FEC), optical pre-shaping, and LMF, we transmit a 41.4-GBd PDM-64QAM signal over 1200-km SSMF. Finally, using per-channel 41.6-GBd PDM-64QAM with SD-FEC, we successfully demonstrate 50-GHz-spaced, 8 × 499-Gb/s transmission over 720-km SSMF. This is the first demonstration of400-Gb/s/ch WDM transmission on the 50-GHz ITU grid that uses a per-channel single-carrier scheme.

© 2013 IEEE

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  1. Y.-K. Huang, E. Ip, M.-F. Huang, B. Zhu, P. N. Ji, Y. Shao, D. W. Peckham, R. Lingle, Y. Aono, T. Tajima, T. Wang, "10 × 456-Gb/s DP-16QAM transmission over 8 × 100 km of ULAF using coherent detection with a 30-GHz analog-to-digital converter," OptoElectron. Comm. Conf. (OECC'10) SapporoJapan Paper PD3.
  2. V. A. J. M. Sleiffer, D. V. D. Borne, V. Veljanovski, M. Kuschnerov, M. Hirano, Y. Yamamoto, T. Sasaki, S. L. Jansen, H. D. Waardt, "Transmission of 448-Gb/s dual-carrier POLMUX-16QAM over 1230 km with 5 flexi-grid ROADM passes," Optical Conf. Comm. (OFC'12) Los AngelesCA Paper W4C3.
  3. H. Takahashi, K. Takeshima, I. Morita, H. Tanaka, "400-Gb/s optical OFDM transmission over 80 km in 50-GHz frequency grid," Europ.Conf. Optical Comm. (ECOC'10) TorinoItaly Paper Tu3C1.
  4. 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 PDM with digital pilot tone," Optical Conf. Comm. (OFC'12) Los AngelesCA Paper PDP5C3.
  5. X. Zhou, L. E. Nelson, P. D. Magill, R. Isaac, B. Zhu, D. W. Peckham, P. Borel, K. Carlson, "8 × 450-Gb/s, 50-GHz-spaced, PDM-32QAM transmission over 400 km and one 50 GHz-grid ROADM," Optical Conf. Comm. (OFC'11) Los AngelesCA Paper PDPB3.
  6. 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," Proc. Optical Conf. Comm. (OFC'12) Los AngelesCA Paper PDP5C6.
  7. ITU-T Recommendation G.975.1, Appendix I.9 (2004).
  8. D. Chang, F. Yu, Z. Xiao, Y. Li, N. Stojanovic, C. Xie, X. Shi, X. Xu, Q. Xiong, "FPGA verification of a single QC-LDPC code for 100 Gb/s optical systems without error floor down to BER of 10–15," Optical fiber Comm. Conf. (OFC) Los AngelesCA (2011) Paper OTuN2.
  9. I. Fatadin, S. J. Savory, D. Ives, "Compensation of quadrature imbalance in an optical QPSK coherent receiver," IEEE Photon. Technol. Lett. 20, 1733-1735 (2008).
  10. T. Pfau, S. Hoffmann, R. Noe, "Hardware-efficient coherent digital receiver concept with feed-forward carrier recovery for M-QAM constellations," J. Lightw. Technol. 27, 989-999 (2009).
  11. J. Yu, Z. Dong, H.-C. Chien, X. Xiao, Z. Jia, N. Chi, "30-Tb/s (3 × 12.84-Tb/s) signal transmission over 320 km usingPDM 64-QAM Modulation," Optical fiber Comm. Conf. (OFC) Los AngelesCA (2012) Paper OM2A4.
  12. X. Li, X. Chen, G. Goldfarb, E. Mateo, I. Kim, F. Yaman, G. Li, "Electronic post-compensation of WDM transmission impairments using coherent detection and digital signal processing," Optics Express 16, 880-888 (2008).
  13. A. H. Gnauck, P. J. Winzer, A. Konczykowska, F. Jorge, J.-Y. Dupuy, M. Riet, G. Charlet, B. Zhu, D. W. Peckham, "Generation and transmission of 21.4-Gbaud PDM 64-QAM using a high power DAC driving a single I/Q modulator," Optical fiber Comm. Conf. (OFC) Los AngelesCA (2011) Paper PDPB2.
  14. W.-R. Peng, H. Takahashi, T. Tsuritani, I. Morita, "On the long-memory filtering gain in an optical high-order QAM transmission," Opt. Exp. 21, 11021-11030 (2013).
  15. C. Xie, "Local oscillator phase noise induced penalties in optical coherent detection systems using electronic dispersion compensation," Optical fiber Comm. Conf. (OFC) San DiegoCAUSA (2009) Paper OMT4.
  16. W.-R. Peng, H. Takahashi, T. Tsuritani, I. Morita, "DAC-free generation and 1200-km transmission of 41-GBd PDM-64QAM using a single I/Q modulator," Proc. Opto-Electron. Comm. Conf. (OECC) BusanKorea (2012) Paper PDP1-3.
  17. W.-R. Peng, H. Takahashi, T. Tsuritani, I. Morita, "50-GHz-spaced, 8 × 499-Gb/s WDM transmission over 720-km SSMF using per-channel 41.6-GBd PDM-64QAM," Proc. Asia Comm. Photon.(ACP) GuangzhouChina (2012) Paper AF4C1.
  18. X. Zhou, L. E. Nelson, "400 G WDM transmission on the 50 GHz grid for future optical networks," IEEE J. Lightw. Technol. 30, 3779-3792 (2012).

2013 (1)

W.-R. Peng, H. Takahashi, T. Tsuritani, I. Morita, "On the long-memory filtering gain in an optical high-order QAM transmission," Opt. Exp. 21, 11021-11030 (2013).

2012 (1)

X. Zhou, L. E. Nelson, "400 G WDM transmission on the 50 GHz grid for future optical networks," IEEE J. Lightw. Technol. 30, 3779-3792 (2012).

2009 (1)

T. Pfau, S. Hoffmann, R. Noe, "Hardware-efficient coherent digital receiver concept with feed-forward carrier recovery for M-QAM constellations," J. Lightw. Technol. 27, 989-999 (2009).

2008 (2)

X. Li, X. Chen, G. Goldfarb, E. Mateo, I. Kim, F. Yaman, G. Li, "Electronic post-compensation of WDM transmission impairments using coherent detection and digital signal processing," Optics Express 16, 880-888 (2008).

I. Fatadin, S. J. Savory, D. Ives, "Compensation of quadrature imbalance in an optical QPSK coherent receiver," IEEE Photon. Technol. Lett. 20, 1733-1735 (2008).

IEEE J. Lightw. Technol. (1)

X. Zhou, L. E. Nelson, "400 G WDM transmission on the 50 GHz grid for future optical networks," IEEE J. Lightw. Technol. 30, 3779-3792 (2012).

IEEE Photon. Technol. Lett. (1)

I. Fatadin, S. J. Savory, D. Ives, "Compensation of quadrature imbalance in an optical QPSK coherent receiver," IEEE Photon. Technol. Lett. 20, 1733-1735 (2008).

J. Lightw. Technol. (1)

T. Pfau, S. Hoffmann, R. Noe, "Hardware-efficient coherent digital receiver concept with feed-forward carrier recovery for M-QAM constellations," J. Lightw. Technol. 27, 989-999 (2009).

Opt. Exp. (1)

W.-R. Peng, H. Takahashi, T. Tsuritani, I. Morita, "On the long-memory filtering gain in an optical high-order QAM transmission," Opt. Exp. 21, 11021-11030 (2013).

Optics Express (1)

X. Li, X. Chen, G. Goldfarb, E. Mateo, I. Kim, F. Yaman, G. Li, "Electronic post-compensation of WDM transmission impairments using coherent detection and digital signal processing," Optics Express 16, 880-888 (2008).

Other (13)

A. H. Gnauck, P. J. Winzer, A. Konczykowska, F. Jorge, J.-Y. Dupuy, M. Riet, G. Charlet, B. Zhu, D. W. Peckham, "Generation and transmission of 21.4-Gbaud PDM 64-QAM using a high power DAC driving a single I/Q modulator," Optical fiber Comm. Conf. (OFC) Los AngelesCA (2011) Paper PDPB2.

J. Yu, Z. Dong, H.-C. Chien, X. Xiao, Z. Jia, N. Chi, "30-Tb/s (3 × 12.84-Tb/s) signal transmission over 320 km usingPDM 64-QAM Modulation," Optical fiber Comm. Conf. (OFC) Los AngelesCA (2012) Paper OM2A4.

C. Xie, "Local oscillator phase noise induced penalties in optical coherent detection systems using electronic dispersion compensation," Optical fiber Comm. Conf. (OFC) San DiegoCAUSA (2009) Paper OMT4.

W.-R. Peng, H. Takahashi, T. Tsuritani, I. Morita, "DAC-free generation and 1200-km transmission of 41-GBd PDM-64QAM using a single I/Q modulator," Proc. Opto-Electron. Comm. Conf. (OECC) BusanKorea (2012) Paper PDP1-3.

W.-R. Peng, H. Takahashi, T. Tsuritani, I. Morita, "50-GHz-spaced, 8 × 499-Gb/s WDM transmission over 720-km SSMF using per-channel 41.6-GBd PDM-64QAM," Proc. Asia Comm. Photon.(ACP) GuangzhouChina (2012) Paper AF4C1.

Y.-K. Huang, E. Ip, M.-F. Huang, B. Zhu, P. N. Ji, Y. Shao, D. W. Peckham, R. Lingle, Y. Aono, T. Tajima, T. Wang, "10 × 456-Gb/s DP-16QAM transmission over 8 × 100 km of ULAF using coherent detection with a 30-GHz analog-to-digital converter," OptoElectron. Comm. Conf. (OECC'10) SapporoJapan Paper PD3.

V. A. J. M. Sleiffer, D. V. D. Borne, V. Veljanovski, M. Kuschnerov, M. Hirano, Y. Yamamoto, T. Sasaki, S. L. Jansen, H. D. Waardt, "Transmission of 448-Gb/s dual-carrier POLMUX-16QAM over 1230 km with 5 flexi-grid ROADM passes," Optical Conf. Comm. (OFC'12) Los AngelesCA Paper W4C3.

H. Takahashi, K. Takeshima, I. Morita, H. Tanaka, "400-Gb/s optical OFDM transmission over 80 km in 50-GHz frequency grid," Europ.Conf. Optical Comm. (ECOC'10) TorinoItaly Paper Tu3C1.

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 PDM with digital pilot tone," Optical Conf. Comm. (OFC'12) Los AngelesCA Paper PDP5C3.

X. Zhou, L. E. Nelson, P. D. Magill, R. Isaac, B. Zhu, D. W. Peckham, P. Borel, K. Carlson, "8 × 450-Gb/s, 50-GHz-spaced, PDM-32QAM transmission over 400 km and one 50 GHz-grid ROADM," Optical Conf. Comm. (OFC'11) Los AngelesCA Paper PDPB3.

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," Proc. Optical Conf. Comm. (OFC'12) Los AngelesCA Paper PDP5C6.

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

D. Chang, F. Yu, Z. Xiao, Y. Li, N. Stojanovic, C. Xie, X. Shi, X. Xu, Q. Xiong, "FPGA verification of a single QC-LDPC code for 100 Gb/s optical systems without error floor down to BER of 10–15," Optical fiber Comm. Conf. (OFC) Los AngelesCA (2011) Paper OTuN2.

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