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Digital Post-Compensation Using Volterra Series Transfer Function

Guiomar, F. P. ; Reis, J.D. ; Teixeira, A. ; Pinto, A. N.

IEEE Photonics Technology Letters Vol. 23, Nº 19, pp. 1412 - 1414, October, 2011.

ISSN (print): 1041-1135
ISSN (online): 1041-1135

Scimago Journal Ranking: 1,54 (in 2011)

Digital Object Identifier:

We propose a non-iterative digital backward propagation technique, based on an inverse modified Volterra series transfer function to post-compensate transmission linear and nonlinear impairments in the presence of optical noise. Using a single-channel 40 Gb/s non-return to zero quadrature phase-shift keying optical signal propagated over 20x80 km of standard single-mode fiber, and performing digital post-compensation around the Nyquist rate, our compensation algorithm is able to surpass the maximum accuracy obtained with a symmetric split-step Fourier method, enabling to increase the nonlinear tolerance by approximately 2 dB.