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

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 compensatio...

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Bibliographic Details
Published in2011 13th International Conference on Transparent Optical Networks pp. 1 - 4
Main Authors Rafique, D., Mussolin, M., Forzati, M., Martensson, J., Chugtai, M. N., Ellis, A. D.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2011
Subjects
Adaptive filters
advanced modulation
advanced modulation formats
Band pass filters
Coherent communications
digital signal processing
Kerr nonlinearity
Nonlinear optics
Optical fiber filters
Optical fibers
Optical receivers
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ISBN1457708817
9781457708817
ISSN2162-7339
DOI10.1109/ICTON.2011.5971017

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Summary: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.
ISBN:1457708817
9781457708817
ISSN:2162-7339
DOI:10.1109/ICTON.2011.5971017