Multicarrier Digital Backpropagation for 400G Optical Superchannels

Guiomar, Fernando P.; Amado, Sofia B.; Ferreira, Rui A. C.; Reis, Jacklyn D.; Rossi, Sandro; Chiuchiarelli, Andrea; Oliveira, Juliano R. F.; Teixeira, A.; Pinto, Armando N.

doi:10.1109/jlt.2015.2512661

Cited by 21 publications

(9 citation statements)

References 35 publications

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“…However, this technique, known also as total-field DBP (TF-DBP), faces the constraint of unavailability of high-speed ADC/DAC for real implementation. Furthermore, it requires a smaller step size to give better performance than the single-channel DBP [49]. A coupled-equation DBP (CE-DBP) approach has been proposed to reduce the complexity of TF-DBP [49].…”

Section: Nonlinear Sectionmentioning

confidence: 99%

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A Survey on Fiber Nonlinearity Compensation for 400 Gb/s and Beyond Optical Communication Systems

Amari

Dobre

Venkatesan

et al. 2017

IEEE Commun. Surv. Tutorials

112

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Optical communication systems represent the backbone of modern communication networks. Since their deployment, different fiber technologies have been used to deal with optical fiber impairments such as dispersion-shifted fibers and dispersion-compensation fibers. In recent years, thanks to the introduction of coherent detection based systems, fiber impairments can be mitigated using digital signal processing (DSP) algorithms. Coherent systems are used in the current 100 Gbps wavelength-division multiplexing (WDM) standard technology. They allow the increase of spectral efficiency by using multilevel modulation formats, and are combined with DSP techniques to combat linear fiber distortions. In addition to linear impairments, the next generation 400 Gbps and 1 Tbps WDM systems are also more affected by the fiber nonlinearity due to the Kerr effect. At high input powers, fiber nonlinear effects become more important and their compensation is required to improve the transmission performance.Several approaches have been proposed to deal with the fiber nonlinearity. In this paper, after a brief description of the Kerr-induced nonlinear effects, a survey on fiber nonlinearity compensation (NLC) techniques is provided. We focus on the well-known NLC techniques and discuss their performance, as well as their implementation and complexity. An extension of the inter-subcarrier nonlinear interference canceler approach is also proposed. A performance evaluation of the well-known NLC techniques and the proposed approach is provided in the context of Nyquist and super-Nyquist superchannel systems.

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Section: Nonlinear Sectionmentioning

confidence: 99%

“…Furthermore, it requires a smaller step size to give better performance than the single-channel DBP [49]. A coupled-equation DBP (CE-DBP) approach has been proposed to reduce the complexity of TF-DBP [49]. CE-DBP introduces an XPM coupling term to deal with the nonlinear interference caused by adjacent subcarriers.…”

Section: Nonlinear Sectionmentioning

confidence: 99%

A Survey on Fiber Nonlinearity Compensation for 400 Gb/s and Beyond Optical Communication Systems

Amari

Dobre

Venkatesan

et al. 2017

IEEE Commun. Surv. Tutorials

112

View full text Add to dashboard Cite

show abstract

“…However, the natural extension of DBP to multi-carrier transmission based on a full-field approach comes at the expense of increased complexity, bringing DBP computational effort far beyond the limits of state-of-the-art electronics [18]. Advanced techniques are therefore required to exploit the full potential of DBP applied to optical superchannels [19], improving the tradeoff between complexity and performance.…”

Section: Nonlinear Mitigation Techniques For Optical Superchannelsmentioning

confidence: 99%

Advanced Techniques for Digital Nonlinear Compensation in Multi-carrier Optical Transmission Systems

Guiomar¹

2016

Frontiers in Optics 2016

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“…ULTICARRIER modulation (MCM) is considered to be a key enabling technique for use in fading dispersive optical communications systems due to its large signal transmission capacity, excellent adaptability to system impairments, good flexibility and reconfigurability, as well as relatively high cost-effectiveness [1]. As one of the most widely researched MCM techniques, over the past ten years, optical orthogonal frequency division multiplexing (OOFDM) has gained overwhelming attention in the optical communication research and development (R&D) community, as OOFDM is equipped with additional highly desired features such as software-controllable optimum trade-offs among the following parameters: achievable signal transmission capacity, spectral efficiency and transceiver complexity [2]- [5].…”

Section: Introductionmentioning

confidence: 99%

Subcarrier Grouping-Enabled Improvement in Transmission Performance of Subcarrier Index-Power Modulated Optical OFDM for IM/DD PON Systems

Halabi

Chen

Giddings

et al. 2018

J. Lightwave Technol.

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As an improved variant of a previously published subcarrier index-power modulated optical orthogonal frequency division multiplexing (SIPM-OOFDM), a signal transmission technique termed subcarrier index-power modulated OOFDM with subcarrier grouping (SIPM-SG-OOFDM) is proposed and investigated for the first time. In SIPM-SG-OOFDM, each symbol is divided into multiple subcarrier groups, each of which is assigned with a specific power pattern according to an incoming data sequence. As such, in comparison with conventional OOFDM, extra information bits are conveyed without significantly compromising the transceiver complexity. In addition, subcarrier grouping also offers highly desired zero-overhead automatic error correction at the receiver. Detailed analysis and numerical simulations are undertaken to identify optimum SIPM-SG-OOFDM transceiver parameters and also to explore the corresponding maximum achievable transmission performances over passive optical network systems based on intensity-modulation and direct-detection. It is shown that, compared to SIPM-OOFDM, SIPM-SG-OOFDM not only increases the signal transmission capacity by 11% but also improves the system power budget by approximately 1.0dB.

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Multicarrier Digital Backpropagation for 400G Optical Superchannels

Cited by 21 publications

References 35 publications

A Survey on Fiber Nonlinearity Compensation for 400 Gb/s and Beyond Optical Communication Systems

A Survey on Fiber Nonlinearity Compensation for 400 Gb/s and Beyond Optical Communication Systems

Advanced Techniques for Digital Nonlinear Compensation in Multi-carrier Optical Transmission Systems

Subcarrier Grouping-Enabled Improvement in Transmission Performance of Subcarrier Index-Power Modulated Optical OFDM for IM/DD PON Systems

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