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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 29, Iss. 17 — Sep. 1, 2011
  • pp: 2570–2576

Multiplier-Free Intrachannel Nonlinearity Compensating Algorithm Operating at Symbol Rate

Zhenning Tao, Liang Dou, Weizhen Yan, Lei Li, Takeshi Hoshida, and Jens C. Rasmussen

Journal of Lightwave Technology, Vol. 29, Issue 17, pp. 2570-2576 (2011)


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Abstract

Intrachannel nonlinearity is considered a major distortion in high-capacity transmission systems particular for the case without inline optical chromatic dispersion compensation. In this paper, a low-complexity intrachannel nonlinear compensator operating at the symbol rate is proposed based on the nonlinear perturbation predistortion for the dual-polarization quadrature phase-shift keying (DP-QPSK) systems. Compared with the widely studied backpropagation algorithm, the proposed algorithm achieves comparable performance with significantly reduced complexity and halved sampling speed in digital signal processing and digital-to-analog converters. The proposed algorithm is demonstrated in a 43 Gb/s DP-QPSK transmission experiment over 1500 km. In addition to the experimental demonstration, numerical simulation verifies that the proposed algorithm is quite robust by tolerating significant uncertainties of link parameters and span-by-span inhomogeneity in the links.

© 2011 IEEE

Citation
Zhenning Tao, Liang Dou, Weizhen Yan, Lei Li, Takeshi Hoshida, and Jens C. Rasmussen, "Multiplier-Free Intrachannel Nonlinearity Compensating Algorithm Operating at Symbol Rate," J. Lightwave Technol. 29, 2570-2576 (2011)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-29-17-2570

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