Abstract

We examine the impact of filtering on self-homodyne coherent WDM systems using the interleaved polarization division-multiplexing scheme. To investigate the performance limit and to provide more insight into previously obtained experimental results, we perform numerical simulations in which different filter shapes and filter bandwidths are used. It is shown that with proper prefiltering of the data and filtering of the pilot tone in the receiver, performance can approach that of an intradyne system. This would make it possible to implement coherent systems with high spectral efficiency without any digital signal processing in the receiver.

© 2011 IEEE

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  1. N. Kikuchi, S. Sasaki, "Sensitivity improvement of incoherent multilevel (30-Gbit/s 8QAM and 40-Gbit/s 16QAM) signaling with non-Euclidian metric and MSPE (multi symbol phase estimation)," Optical Fiber Communication Conf. (2009) pp. Paper OWG1.
  2. T. Pfau, S. Hoffmann, R. Noé, "Hardware-efficient coherent digital receiver concept with feedforward carrier recovery for M-QAM constellations," J. Lightw. Technol. 27, 989-999 (2009).
  3. H. Sun, K.-T. Wu, K. Roberts, "Real-time measurements of a 40 Gb/s coherent system," Opt. Exp. 16, 873-879 (2008).
  4. P. Winzer, A. Gnauck, C. Doerr, M. Magarini, L. Buhl, "Spectrally efficient long-haul optical networking using 112-Gb/s polarization-multiplexed 16-QAM," J. Lightw. Technol. 28, 547-556 (2010).
  5. A. Sano, "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. Optical Fiber Communication Conf. (2010) pp. Paper PDPB7.
  6. X. Zhou, "64-Tb/s (640 $\times$ 107-Gb/s) PDM 36-QAM transmission over 320 km using both pre- and post-transmission digital equalization," Optical Fiber Communication Conf. (2010) pp. Paper PDPB9.
  7. A. Sano, "100$\,\times\,$120 Gb/s PDM 64-QAM transmission over 160 km using linewidth-tolerant pilotless digital coherent detection," Eur. Conf. Optical Communication (2010) pp. Paper PD2.4.
  8. S. Okamoto, "512-QAM (54 Gbit/s) coherent optical transmission over 150 km with an optical bandwidth of 4.1 GHz," Eur. Conf. Optical Communication (2010) pp. Paper PD2.3.
  9. T. Miyazaki, F. Kubota, "PSK self-homodyne detection using a pilot carrier for multibit/symbol transmission with inverse-RZ signal," IEEE Photon. Technol. Lett. 17, 1334-1336 (2005).
  10. M. Nakamura, Y. Kamio, T. Miyazaki, "Linewidth-tolerant real-time 40-Gbit/s 16-QAM self-homodyne detection using a pilot carrier and ISI suppression based on electronic digital processing," Opt. Lett. 35, 13-15 (2010).
  11. M. Nakamura, Y. Kamio, "30-Gbps (5-Gsymbol/s) 64-QAM self-homodyne transmission over 60 km SSMF using phase-noise cancelling technique and ISI-suppression based on electronic digital processing," Opt. Fiber Communication Conf. (2009) pp. Paper OWG4.
  12. M. Nakamura, Y. Kamio, T. Miyazaki, "PMD- and dispersion-tolerance of QPSK homodyne detection using a polarization-multiplexed pilot carrier," Eur. Conf. Optical Communication (2006) pp. Paper Mo4.2.6.
  13. H. Wernz, "112 Gb/s Polmux RZ-DQPSK with fast polarization tracking based on interference control," Optical Fiber Communication Conf. (2009) pp. Paper OTuN4.
  14. C. R. Doerr, L. Chen, "Monolithic PDM-DQPSK receiver in silicon," Eur. Conf. Optical Communication (2010) pp. Paper PD3.6.
  15. M. Sjödin, P. Johannisson, Z. Tong, M. Karlsson, P. Andrekson, "OSNR requirements for self-homodyne coherent systems," IEEE Photon. Technol. Lett. 22, 91-93 (2010).
  16. M. Sjödin, E. Agrell, G.-W. Lu, P. Johannisson, M. Karlsson, P. Andrekson, "Interleaved polarization division multiplexing in self-homodyne coherent WDM systems," Eur. Conf. Optical Communication (2010) pp. Paper Mo.1.C.3.
  17. A. J. Viterbi, A. M. Viterbi, "Nonlinear estimation of PSK-modulated carrier phase with application to burst digital transmission," IEEE Trans. Inf. Theory IT-29, 543-551 (1983).
  18. R. G. Gallager, Principles of Digital Communicatioyn (Cambridge Univ. Press, 2008).
  19. A. Gnauck, P. Winzer, S. Chandrasekhar, X. Liu, B. Zhu, D. Peckham, "10$\,\times\,$224-Gb/s WDM transmission of 28-Gbaud PDM 16-QAM on a 50-GHz Grid over 1200 km of fiber," Opt. Fiber Communication Conf. (2010) pp. Paper PDPB8.

2010

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

M. Sjödin, P. Johannisson, Z. Tong, M. Karlsson, P. Andrekson, "OSNR requirements for self-homodyne coherent systems," IEEE Photon. Technol. Lett. 22, 91-93 (2010).

M. Nakamura, Y. Kamio, T. Miyazaki, "Linewidth-tolerant real-time 40-Gbit/s 16-QAM self-homodyne detection using a pilot carrier and ISI suppression based on electronic digital processing," Opt. Lett. 35, 13-15 (2010).

2009

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

2008

H. Sun, K.-T. Wu, K. Roberts, "Real-time measurements of a 40 Gb/s coherent system," Opt. Exp. 16, 873-879 (2008).

2005

T. Miyazaki, F. Kubota, "PSK self-homodyne detection using a pilot carrier for multibit/symbol transmission with inverse-RZ signal," IEEE Photon. Technol. Lett. 17, 1334-1336 (2005).

1983

A. J. Viterbi, A. M. Viterbi, "Nonlinear estimation of PSK-modulated carrier phase with application to burst digital transmission," IEEE Trans. Inf. Theory IT-29, 543-551 (1983).

IEEE Photon. Technol. Lett.

T. Miyazaki, F. Kubota, "PSK self-homodyne detection using a pilot carrier for multibit/symbol transmission with inverse-RZ signal," IEEE Photon. Technol. Lett. 17, 1334-1336 (2005).

M. Sjödin, P. Johannisson, Z. Tong, M. Karlsson, P. Andrekson, "OSNR requirements for self-homodyne coherent systems," IEEE Photon. Technol. Lett. 22, 91-93 (2010).

IEEE Trans. Inf. Theory

A. J. Viterbi, A. M. Viterbi, "Nonlinear estimation of PSK-modulated carrier phase with application to burst digital transmission," IEEE Trans. Inf. Theory IT-29, 543-551 (1983).

J. Lightw. Technol.

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

J. Lightw. Technol.

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

Opt. Exp.

H. Sun, K.-T. Wu, K. Roberts, "Real-time measurements of a 40 Gb/s coherent system," Opt. Exp. 16, 873-879 (2008).

Opt. Lett.

Other

N. Kikuchi, S. Sasaki, "Sensitivity improvement of incoherent multilevel (30-Gbit/s 8QAM and 40-Gbit/s 16QAM) signaling with non-Euclidian metric and MSPE (multi symbol phase estimation)," Optical Fiber Communication Conf. (2009) pp. Paper OWG1.

R. G. Gallager, Principles of Digital Communicatioyn (Cambridge Univ. Press, 2008).

A. Gnauck, P. Winzer, S. Chandrasekhar, X. Liu, B. Zhu, D. Peckham, "10$\,\times\,$224-Gb/s WDM transmission of 28-Gbaud PDM 16-QAM on a 50-GHz Grid over 1200 km of fiber," Opt. Fiber Communication Conf. (2010) pp. Paper PDPB8.

M. Sjödin, E. Agrell, G.-W. Lu, P. Johannisson, M. Karlsson, P. Andrekson, "Interleaved polarization division multiplexing in self-homodyne coherent WDM systems," Eur. Conf. Optical Communication (2010) pp. Paper Mo.1.C.3.

A. Sano, "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. Optical Fiber Communication Conf. (2010) pp. Paper PDPB7.

X. Zhou, "64-Tb/s (640 $\times$ 107-Gb/s) PDM 36-QAM transmission over 320 km using both pre- and post-transmission digital equalization," Optical Fiber Communication Conf. (2010) pp. Paper PDPB9.

A. Sano, "100$\,\times\,$120 Gb/s PDM 64-QAM transmission over 160 km using linewidth-tolerant pilotless digital coherent detection," Eur. Conf. Optical Communication (2010) pp. Paper PD2.4.

S. Okamoto, "512-QAM (54 Gbit/s) coherent optical transmission over 150 km with an optical bandwidth of 4.1 GHz," Eur. Conf. Optical Communication (2010) pp. Paper PD2.3.

M. Nakamura, Y. Kamio, "30-Gbps (5-Gsymbol/s) 64-QAM self-homodyne transmission over 60 km SSMF using phase-noise cancelling technique and ISI-suppression based on electronic digital processing," Opt. Fiber Communication Conf. (2009) pp. Paper OWG4.

M. Nakamura, Y. Kamio, T. Miyazaki, "PMD- and dispersion-tolerance of QPSK homodyne detection using a polarization-multiplexed pilot carrier," Eur. Conf. Optical Communication (2006) pp. Paper Mo4.2.6.

H. Wernz, "112 Gb/s Polmux RZ-DQPSK with fast polarization tracking based on interference control," Optical Fiber Communication Conf. (2009) pp. Paper OTuN4.

C. R. Doerr, L. Chen, "Monolithic PDM-DQPSK receiver in silicon," Eur. Conf. Optical Communication (2010) pp. Paper PD3.6.

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