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

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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Hauptverfasser: Rafique, D., Mussolin, M., Forzati, M., Martensson, J., Chugtai, M. N., Ellis, A. D.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
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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Beschreibung
Zusammenfassung: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.
ISSN:2162-7339
DOI:10.1109/ICTON.2011.5971017