Digital Backward Propagation: A Technique to Compensate Fiber Dispersion and Non-Linear Impairments

Asif, Rameez; Lin, Chien-Yu; Schmauß, Bernhard

doi:10.5772/25410

Cited by 6 publications

(2 citation statements)

References 51 publications

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“…Digital Back Propagation Provided that the channel characteristics are known, DBP is commonly referred as using split-step inverse NLSE solution to pre-compensate or post-compensate the deterministic effects in channels at the transmitter or receiver [14]. The working principle of DBP is straightforward.…”

Section: Nonlinearity Control Methodsmentioning

confidence: 99%

Analysis of optical back propagation under non-ideal optical phase conjugation and amplifier noise

2014

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The continuous growth in the demand of transmission capacity requires high data rates in today's fiber-optic communication systems. Fiber nonlinearity is considered to be the major obstacle in the development of communication capacity. Optical back propagation is one of the ways to address this problem. This thesis explores the performances of optical back propagation under several practical non-ideal conditions. It compares the results of optical back propagation with other nonlinearity control techniques such as digital back propagation and mid-link optical phase conjugation.Optical back propagation is an all optical process which builds into the optical communication systems to compensate for the phase noise caused by fiber nonlinear effects. Aside from previously established simulation results in the literature of optical back propagation under ideal cases, this thesis demonstrates simulation results of optical back propagation under several non-ideal cases. It demonstrates a 5.7dB of power penalty that occurs with a 5dB of optical signal to noise ratio degradation in the system.For further investigation into the optical back propagation system, advanced modulation formats of the optical signals and higher transmission baud rate effects are studied.The results demonstrated in this thesis can also be used to determine the optimum operating system parameters under non-ideal conditions in optical back propagation systems.ii Sommaire La croissance incessante de la demande pour la capacité de transmission crée un besoin pour des taux de transmission de donnéesélevés dans les systèmes de communication par fibres optiques d'aujourd'hui. La non-linéarité de la fibre est considérée comme un obstacle majeur dans le développement de la capacité de communication. La rétro-propagation optique est une des façons de répondreà ce problème. Cette thèse explore les performances de la rétro-propagation optique dans plusieurs conditions pratiques et imparfaites. Les résultats obtenus avec la rétro-propagation optique sont comparésà ceux obtenus avec d'autres techniques de contrôle de la non-linéarité telles que la rétro-propagation numérique et la conjugaison de phase optiqueà mi-chemin.La rétro-propagation optique est un procédé entièrement optique qui s'introduit dans les systèmes de communication optiques pour compenser le bruit de phase causé par les effets non-linéaires de la fibre. En plus des résultats de simulation institués précédemment dans la documentation pour la rétro-propagation dans des conditions idéales, les résultats de simulation pour la rétro-propagation dans des conditions imparfaites sont présentés dans cette thèse. Il est démontré qu'une perte de puissance de 5.7dB est obtenue lorsque la dégradation du rapport signal sur bruit optique dans le système est de 5dB.Pour de plus amples investigations du système de rétro-propagation optique, des formats de modulation avancés pour le signal optique ainsi que l'effet de l'augmentation de la vitesse de transmission en bauds sontétudiés.Les résultats présen...

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Section: Nonlinearity Control Methodsmentioning

confidence: 99%

Analysis of optical back propagation under non-ideal optical phase conjugation and amplifier noise

2014

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“…Many digital compensation techniques for different impairments have been already presented [6][7][8]. Among these techniques, the digital backward propagation (DBP) method has proved to be quite promising for jointly compensating linear and nonlinear impairments [9]. This method is based on solving the nonlinear Schrödinger equation (NLSE) in the backward direction starting with the received signal as the input and producing the signal at the transmitter as its output [10].…”

Section: Introductionmentioning

confidence: 99%

Advanced perturbation technique for digital backward propagation in WDM systems

2013

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An improved digital backward propagation (DBP) is proposed to compensate inter-nonlinear effects and dispersion jointly in WDM systems based on an advanced perturbation technique (APT). A non-iterative weighted concept is presented to replace the iterative in analytical recursion expression, which can dramatically simplify the complexity and improve accuracy compared to the traditional perturbation technique (TPT). Furthermore, an analytical recursion expression of the output after backward propagation is obtained initially. Numerical simulations are executed for various parameters of the transmission system. The results indicate that the advanced perturbation technique will relax the step size requirements and reduce the oversampling factor when launch power is higher than −2 dBm. We estimate this technique will reduce computational complexity by a factor of around seven with respect to the conventional DBP.

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DOSnet as a non-black-box PDE solver: When deep learning meets operator splitting

Liu

Sun

et al. 2023

Journal of Computational Physics

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Digital Backward Propagation: A Technique to Compensate Fiber Dispersion and Non-Linear Impairments

Cited by 6 publications

References 51 publications

Analysis of optical back propagation under non-ideal optical phase conjugation and amplifier noise

Analysis of optical back propagation under non-ideal optical phase conjugation and amplifier noise

Advanced perturbation technique for digital backward propagation in WDM systems

DOSnet as a non-black-box PDE solver: When deep learning meets operator splitting

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