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:
Abstract
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.
