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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 2 — Jan. 16, 2012
  • pp: 1360–1369

Mitigation of intra-channel nonlinearities using a frequency-domain Volterra series equalizer

Fernando P. Guiomar, Jacklyn D. Reis, António L. Teixeira, and Armando N. Pinto  »View Author Affiliations

Optics Express, Vol. 20, Issue 2, pp. 1360-1369 (2012)

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We address the issue of intra-channel nonlinear compensation using a Volterra series nonlinear equalizer based on an analytical closed-form solution for the 3rd order Volterra kernel in frequency-domain. The performance of the method is investigated through numerical simulations for a single-channel optical system using a 20 Gbaud NRZ-QPSK test signal propagated over 1600 km of both standard single-mode fiber and non-zero dispersion shifted fiber. We carry on performance and computational effort comparisons with the well-known backward propagation split-step Fourier (BP-SSF) method. The alias-free frequency-domain implementation of the Volterra series nonlinear equalizer makes it an attractive approach to work at low sampling rates, enabling to surpass the maximum performance of BP-SSF at 2× oversampling. Linear and nonlinear equalization can be treated independently, providing more flexibility to the equalization subsystem. The parallel structure of the algorithm is also a key advantage in terms of real-time implementation.

© 2011 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2330) Fiber optics and optical communications : Fiber optics communications

ToC Category:
Fibers, Fiber Devices, and Amplifiers

Original Manuscript: October 3, 2011
Revised Manuscript: December 17, 2011
Manuscript Accepted: December 19, 2011
Published: January 9, 2012

Virtual Issues
European Conference on Optical Communication 2011 (2011) Optics Express

Fernando P. Guiomar, Jacklyn D. Reis, António L. Teixeira, and Armando N. Pinto, "Mitigation of intra-channel nonlinearities using a frequency-domain Volterra series equalizer," Opt. Express 20, 1360-1369 (2012)

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