Compensation of intra-channel nonlinear fibre impairments using simplified digital back-propagation algorithm
Danish Rafique,Marco Mussolin,Marco Forzati,Jonas Martensson,Mohsan N. Chugtai,Andrew D. Ellis +5 more
TLDR
A digital back-propagation simplification method is investigated 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 with no inline compensation.Abstract:
We investigate a digital back-propagation simplification 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 (20x80km) with no inline compensation. Through numerical simulation, we report up to 80% reduction in required back-propagation steps to perform nonlinear compensation, in comparison to the standard back-propagation algorithm. This method takes into account the correlation between adjacent symbols at a given instant using a weighted-average approach, and optimization of the position of nonlinear compensator stage to enable practical digital back-propagation.read more
Citations
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Journal ArticleDOI
Performance limits in optical communications due to fiber nonlinearity
TL;DR: How predictions were made from the outset of research in laser based optical communications and how they have evolved to their present form, accurately predicting the performance of coherently detected communication systems are described.
Journal ArticleDOI
Nonlinear Interference Mitigation: Methods and Potential Gain
Ronen Dar,Peter J. Winzer +1 more
TL;DR: In this paper, the potential benefits of digital nonlinearity compensation (NLC) techniques in fully loaded coherent wavelength-division multiplexed (WDM) transmission systems were explored. And the authors showed that while the BP gain is similar to single-carrier systems, PPRN removal can have a much stronger effect, particularly for higher order QAM systems, implying that SCM can be advantageous not only for constant modulus formats such as QPSK, but also for high spectral efficiency systems.
Journal ArticleDOI
Reduced Complexity Digital Back-Propagation Methods for Optical Communication Systems
Antonio Napoli,Zied Maalej,Vincent A. J. M. Sleiffer,Maxim Kuschnerov,Danish Rafique,Erik Timmers,Bernhard Spinnler,Talha Rahman,L.D. Coelho,Norbert Hanik +9 more
TL;DR: Two proposals to reduce the hardware complexity required by digital back-propagation are discussed, one confirms and extends published results for non-dispersion managed link, while the second introduces a novel method applicable to dispersion managed links, showing complexity reductions in the order of 50% and up to 85%, respectively.
Journal ArticleDOI
Probabilistic 16-QAM Shaping in WDM Systems
Chunpo Pan,Frank R. Kschischang +1 more
TL;DR: In this paper, a probabilistic shaping scheme for optical WDM systems, where nonlinear interference noise depends on the input optical signal power distribution, is proposed, and an example system is developed for a transmission distance around $3280$ Âkm.
Journal ArticleDOI
Nonlinear inverse synthesis technique for optical links with lumped amplification.
TL;DR: A modified scheme of the NIS method is proposed, which can be used effectively in standard optical links with lumped amplifiers, such as, erbium-doped fiber amplifiers (EDFAs).
References
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Book
Nonlinear Fiber Optics
TL;DR: The field of nonlinear fiber optics has advanced enough that a whole book was devoted to it as discussed by the authors, which has been translated into Chinese, Japanese, and Russian languages, attesting to the worldwide activity in the field.
Journal ArticleDOI
Approaching the Non-Linear Shannon Limit
TL;DR: In this article, the authors review the recent progress of information theory in optical communications and describe the current experimental results and associated advances in various individual technologies which increase the information capacity, and confirm the widely held belief that the reported capacities are approaching the fundamental limits imposed by signal-to-noise ratio and the distributed nonlinearity of conventional optical fibres, resulting in the reduction in the growth rate of communication capacity.
Journal ArticleDOI
Application of the Manakov-PMD equation to studies of signal propagation in optical fibers with randomly varying birefringence
TL;DR: In this article, the Manakov-polarization mode dispersion (PMD) equation is used to model both non-return-to-zero (NRZ) and soliton signal propagation in optical fibers with randomly varying birefringence.
Journal ArticleDOI
Coherent Equalization and POLMUX-RZ-DQPSK for Robust 100-GE Transmission
C.R.S. Fludger,T. Duthel,D. van den Borne,C. Schulien,E.-D. Schmidt,T. Wuth,J. C. Geyer,E. de Man,Khoe Giok-Djan,H. de Waardt +9 more
TL;DR: In this paper, the use of a coherent digital receiver for compensation of linear transmission impairments and polarization demultiplexing in a transmission system compatible with a future 100-Gb/s Ethernet standard is discussed.
Journal ArticleDOI
Electronic compensation of chromatic dispersion using a digital coherent receiver.
TL;DR: Results of a 42.8Gbit/s nonlinear transmission experiment, using polarization multiplexed QPSK data at 10.7GBaud, with 4 bits per symbol is presented, which allows the digital coherent receiver to be compensated digitally after transmission over 6400km of standard single mode fiber.
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