Modified split-step fourier method for compensation of nonlinear fibre impairments

Author

Rafique, Danish ; Mussolin, Marco ; Forzati, Marco ; Mårtensson, Jonas ; Chugtai, Mohsan N. ; Ellis, Andrew D.

Author_Institution

Dept. of Electr. Eng./Phys., Univ. Coll. Cork, Cork, Ireland

fYear

2011

fDate

26-30 June 2011

Firstpage

1

Lastpage

4

Abstract

In this paper, we investigate a modified split-step Fourier method to enable computationally-efficient digital nonlinearity compensation for a coherently-detected 112 Gb/s polarization multiplexed quadrature phase shifted keying transmission over a 1,600 km link (20×80 km) with no inline compensation. We report up to 80% reduction in required stages to perform nonlinear compensation, in comparison to the conventional back-propagation algorithm. This method takes into account the correlation between adjacent symbols at a given instant using a weighted-average approach to enable practical digital nonlinearity compensation.

Keywords

Fourier transform optics; backpropagation; compensation; light transmission; multiplexing; nonlinear optics; optical fibre communication; optical fibre polarisation; optical links; quadrature phase shift keying; bit rate 112 Gbit/s; coherently-detected polarization; computationally-efficient digital nonlinearity compensation; distance 1600 km; modified split-step Fourier method; multiplexed quadrature phase shifted keying transmission; nonlinear fibre impairments; weighted-average approach; Adaptive filters; Band pass filters; Nonlinear optics; Optical fiber filters; Optical fibers; Optical receivers; Coherent communications; Kerr nonlinearity; advanced modulation formats; digital signal processing; nonlinear optics;

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks (ICTON), 2011 13th International Conference on

Conference_Location

Stockholm

ISSN

2161-2056

Print_ISBN

978-1-4577-0881-7

Electronic_ISBN

2161-2056

Type

conf

DOI

10.1109/ICTON.2011.5971017

Filename

5971017