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Simplified Backpropagation Equalization in WDM Coherent Polarization Multiplexed Systems

Title
Simplified Backpropagation Equalization in WDM Coherent Polarization Multiplexed Systems
Type
Article in International Conference Proceedings Book
Year
2009
Authors
H. M. Salgado
(Author)
FEUP
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L. M. Pessoa
(Author)
Other
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I. Darwazeh
(Author)
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Conference proceedings International
Pages: 604-608
11th International Conference on Transparent Optical Networks
S Miguel, PORTUGAL, JUN 28-JUL 02, 2009
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FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering
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Authenticus ID: P-003-QDV
Abstract (EN): The digital equalization of fibre impairments in coherent optical communications allows for ultimate limits of spectral efficiency to be achieved, while reducing the cost and complexity compared to optical based solutions. Digital backpropagation (BP) was proposed recently as a reduced complexity approach for jointly compensating linear and non-linear impairments in single polarization coherent optical systems. Furthermore, polarization division multiplexed quadrature phase-shift keying (PDM-QPSK) has emerged as a promising format to increase spectral efficiency. Here we assess the performance of the simplified backpropagation equalization in both single channel and multiple channel transmission in combination with polarization multiplexing for different dispersion map configurations. It is shown that polarization multiplexing induces a degradation in performance due to cross-phase modulation polarization scattering, the backpropagation algorithm still overperforming linear equalization.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 5
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