Abstract

We demonstrate an optical Nyquist pulse TDM (Nyquist OTDM) transmission at 160 Gbaud with a substantial increase in the dispersion tolerance compared with a conventional OTDM transmission. Optical Nyquist pulses can be bit-interleaved to ultrahigh symbol rate without suffering from intersymbol interference due to its zero-crossing property at every symbol interval. This allows the signal bandwidth to be greatly narrowed compared to typical pulse waveforms such as Gaussian or sech profile. By virtue of this property, a dispersion tolerance over ± 8 ps/nm was successfully realized in 160 Gbaud, 525 km transmission.

©2012 Optical Society of America

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References

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  1. E. Ip and J. M. Kahn, “Digital equalization of chromatic dispersion and polarization mode dispersion,” J. Lightwave Technol. 25(8), 2033–2043 (2007).
    [Crossref]
  2. S. J. Savory, “Digital filters for coherent optical receivers,” Opt. Express 16(2), 804–817 (2008).
    [Crossref] [PubMed]
  3. T. Richter, E. Palushani, C. Schmidt-Langhorst, M. Nölle, R. Ludwig, and C. Schubert, “Single wavelength channel 10.2 Tb/s TDM-data capacity using 16-QAM and coherent detection,” Optical Fiber Communication Conference (OFC2011), PDPA9.
  4. M. Nakazawa, K. Kasai, M. Yoshida, and T. Hirooka, “Novel RZ-CW conversion scheme for ultra multi-level, high-speed coherent OTDM transmission,” Opt. Express 19(26), B574–B580 (2011).
    [Crossref] [PubMed]
  5. M. Nakazawa, T. Hirooka, P. Ruan, and P. Guan, “Ultrahigh-speed “orthogonal” TDM transmission with an optical Nyquist pulse train,” Opt. Express 20(2), 1129–1140 (2012).
    [Crossref] [PubMed]
  6. K. Kasai, J. Hongo, H. Goto, M. Yoshida, and M. Nakazawa, “The use of a Nyquist filter for reducing an optical signal bandwidth in a coherent QAM optical transmission,” IEICE Electron. Express 5(1), 6–10 (2008).
    [Crossref]
  7. G. Bosco, A. Carena, V. Curri, P. Poggiolini, and F. Forghieri, “Performance limits of Nyquist-WDM and CO-OFDM in high-speed PM-QPSK systems,” IEEE Photon. Technol. Lett. 22(15), 1129–1131 (2010).
    [Crossref]
  8. X. Zhou, L. E. Nelson, P. Magill, B. Zhu, and D. W. Peckham, “8x450-Gb/s, 50-GHz spaced, PDM-32QAM transmission over 400 km and one 50 GHz-grid ROADM,” Optical Fiber Communication Conference (OFC2011), PDPB3.
  9. R. Schmogrow, M. Meyer, S. Wolf, B. Nebendahl, D. Hillerkuss, B. Baeuerle, M. Dreschmann, J. Meyer, M. Huebner, J. Becker, C. Koos, W. Freude, and J. Leuthold, “150 Gbit/s Real-Time Nyquist Pulse Transmission Over 150 km SSMF Enhanced by DSP with Dynamic Precision,” Optical Fiber Communication Conference (OFC2012), OM2A.6.
  10. G. Baxter, S. Frisken, D. Abakoumov, H. Zhou, I. Clarke, A. Bartos, and S. Poole, “Highly programmable wavelength selective switch based on liquid crystal on silicon switching elements,” Optical Fiber Communication Conference (OFC2006), OTuF2.
  11. H. Nyquist, “Certain topics in telegraph transmission theory,” AIEE Trans. 47, 617–644 (1928).

2012 (1)

2011 (1)

2010 (1)

G. Bosco, A. Carena, V. Curri, P. Poggiolini, and F. Forghieri, “Performance limits of Nyquist-WDM and CO-OFDM in high-speed PM-QPSK systems,” IEEE Photon. Technol. Lett. 22(15), 1129–1131 (2010).
[Crossref]

2008 (2)

K. Kasai, J. Hongo, H. Goto, M. Yoshida, and M. Nakazawa, “The use of a Nyquist filter for reducing an optical signal bandwidth in a coherent QAM optical transmission,” IEICE Electron. Express 5(1), 6–10 (2008).
[Crossref]

S. J. Savory, “Digital filters for coherent optical receivers,” Opt. Express 16(2), 804–817 (2008).
[Crossref] [PubMed]

2007 (1)

1928 (1)

H. Nyquist, “Certain topics in telegraph transmission theory,” AIEE Trans. 47, 617–644 (1928).

Bosco, G.

G. Bosco, A. Carena, V. Curri, P. Poggiolini, and F. Forghieri, “Performance limits of Nyquist-WDM and CO-OFDM in high-speed PM-QPSK systems,” IEEE Photon. Technol. Lett. 22(15), 1129–1131 (2010).
[Crossref]

Carena, A.

G. Bosco, A. Carena, V. Curri, P. Poggiolini, and F. Forghieri, “Performance limits of Nyquist-WDM and CO-OFDM in high-speed PM-QPSK systems,” IEEE Photon. Technol. Lett. 22(15), 1129–1131 (2010).
[Crossref]

Curri, V.

G. Bosco, A. Carena, V. Curri, P. Poggiolini, and F. Forghieri, “Performance limits of Nyquist-WDM and CO-OFDM in high-speed PM-QPSK systems,” IEEE Photon. Technol. Lett. 22(15), 1129–1131 (2010).
[Crossref]

Forghieri, F.

G. Bosco, A. Carena, V. Curri, P. Poggiolini, and F. Forghieri, “Performance limits of Nyquist-WDM and CO-OFDM in high-speed PM-QPSK systems,” IEEE Photon. Technol. Lett. 22(15), 1129–1131 (2010).
[Crossref]

Goto, H.

K. Kasai, J. Hongo, H. Goto, M. Yoshida, and M. Nakazawa, “The use of a Nyquist filter for reducing an optical signal bandwidth in a coherent QAM optical transmission,” IEICE Electron. Express 5(1), 6–10 (2008).
[Crossref]

Guan, P.

Hirooka, T.

Hongo, J.

K. Kasai, J. Hongo, H. Goto, M. Yoshida, and M. Nakazawa, “The use of a Nyquist filter for reducing an optical signal bandwidth in a coherent QAM optical transmission,” IEICE Electron. Express 5(1), 6–10 (2008).
[Crossref]

Ip, E.

Kahn, J. M.

Kasai, K.

M. Nakazawa, K. Kasai, M. Yoshida, and T. Hirooka, “Novel RZ-CW conversion scheme for ultra multi-level, high-speed coherent OTDM transmission,” Opt. Express 19(26), B574–B580 (2011).
[Crossref] [PubMed]

K. Kasai, J. Hongo, H. Goto, M. Yoshida, and M. Nakazawa, “The use of a Nyquist filter for reducing an optical signal bandwidth in a coherent QAM optical transmission,” IEICE Electron. Express 5(1), 6–10 (2008).
[Crossref]

Nakazawa, M.

Nyquist, H.

H. Nyquist, “Certain topics in telegraph transmission theory,” AIEE Trans. 47, 617–644 (1928).

Poggiolini, P.

G. Bosco, A. Carena, V. Curri, P. Poggiolini, and F. Forghieri, “Performance limits of Nyquist-WDM and CO-OFDM in high-speed PM-QPSK systems,” IEEE Photon. Technol. Lett. 22(15), 1129–1131 (2010).
[Crossref]

Ruan, P.

Savory, S. J.

Yoshida, M.

M. Nakazawa, K. Kasai, M. Yoshida, and T. Hirooka, “Novel RZ-CW conversion scheme for ultra multi-level, high-speed coherent OTDM transmission,” Opt. Express 19(26), B574–B580 (2011).
[Crossref] [PubMed]

K. Kasai, J. Hongo, H. Goto, M. Yoshida, and M. Nakazawa, “The use of a Nyquist filter for reducing an optical signal bandwidth in a coherent QAM optical transmission,” IEICE Electron. Express 5(1), 6–10 (2008).
[Crossref]

AIEE Trans. (1)

H. Nyquist, “Certain topics in telegraph transmission theory,” AIEE Trans. 47, 617–644 (1928).

IEEE Photon. Technol. Lett. (1)

G. Bosco, A. Carena, V. Curri, P. Poggiolini, and F. Forghieri, “Performance limits of Nyquist-WDM and CO-OFDM in high-speed PM-QPSK systems,” IEEE Photon. Technol. Lett. 22(15), 1129–1131 (2010).
[Crossref]

IEICE Electron. Express (1)

K. Kasai, J. Hongo, H. Goto, M. Yoshida, and M. Nakazawa, “The use of a Nyquist filter for reducing an optical signal bandwidth in a coherent QAM optical transmission,” IEICE Electron. Express 5(1), 6–10 (2008).
[Crossref]

J. Lightwave Technol. (1)

Opt. Express (3)

Other (4)

X. Zhou, L. E. Nelson, P. Magill, B. Zhu, and D. W. Peckham, “8x450-Gb/s, 50-GHz spaced, PDM-32QAM transmission over 400 km and one 50 GHz-grid ROADM,” Optical Fiber Communication Conference (OFC2011), PDPB3.

R. Schmogrow, M. Meyer, S. Wolf, B. Nebendahl, D. Hillerkuss, B. Baeuerle, M. Dreschmann, J. Meyer, M. Huebner, J. Becker, C. Koos, W. Freude, and J. Leuthold, “150 Gbit/s Real-Time Nyquist Pulse Transmission Over 150 km SSMF Enhanced by DSP with Dynamic Precision,” Optical Fiber Communication Conference (OFC2012), OM2A.6.

G. Baxter, S. Frisken, D. Abakoumov, H. Zhou, I. Clarke, A. Bartos, and S. Poole, “Highly programmable wavelength selective switch based on liquid crystal on silicon switching elements,” Optical Fiber Communication Conference (OFC2006), OTuF2.

T. Richter, E. Palushani, C. Schmidt-Langhorst, M. Nölle, R. Ludwig, and C. Schubert, “Single wavelength channel 10.2 Tb/s TDM-data capacity using 16-QAM and coherent detection,” Optical Fiber Communication Conference (OFC2011), PDPA9.

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Figures (6)

Fig. 1
Fig. 1 Experimental setup for 160 Gbaud Nyquist pulse transmission over 525 km (a), and the waveforms of 40 GHz and 160 Gbaud OTDM Nyquist pulses (b).

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Fig. 2
Fig. 2 160 Gbaud Nyquist pulses after 525 km transmission with residual dispersion of 0 (a-1) and 3.0 ps/nm (b-1). (a-2) and (b-2) are the corresponding demultiplexed waveforms.

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Fig. 3
Fig. 3 160 Gbaud Gaussian pulses after 525 km transmission with residual dispersion of 0 (a-1) and 3.0 ps/nm (b-1). (a-2) and (b-2) are the corresponding demultiplexed waveforms.

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Fig. 4
Fig. 4 BER characteristics for 160 Gbaud-525 km transmission with Nyquist (a) and Gaussian (b) pulses.

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Fig. 5
Fig. 5 Comparison of the receiver sensitivity between Nyquist and Gaussian pulses for various residual dispersion values.

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Fig. 6
Fig. 6 Growth of the zero level at the adjacent symbol point t = T against dispersion. The red and blue curves are the results for optical Nyquist and Gaussian pulses, respectively.

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Equations (1)

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r(t)= sin(πt/T) πt/T cos(απt/T) 1− (2αt/T) 2 ,     R(f)={ 1,                                                   0≤|f|≤ 1−α 2T 1 2 { 1−sin[ π 2α (2T|f|−1) ] },    1−α 2T ≤|f|≤ 1+α 2T 0,                                                         |f|≥ 1+α 2T

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