The Enhanced Gaussian Noise Model Extended to Polarization-Dependent Loss

Serena, Paolo; Lasagni, Chiara; Bononi, A.

doi:10.1109/jlt.2020.3001722

Cited by 23 publications

(5 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Randomly varying signal powers randomize the generation of NLIN and affect its statistics in a rather nontrivial manner. This problem has been addressed in a recent study by Serena et al [116], where the GN model is extended so as to include the effects of PDL.…”

Section: B Polarization-dependent Lossmentioning

confidence: 99%

Challenges in Estimating the Information Capacity of the Fiber-Optic Channel

et al. 2022

View full text Add to dashboard Cite

Since its early commercial deployment in the late 1980s, optical fiber has evolved to become the predominant carrier of the globe's communications. Yet, after accommodating the world's exponentially growing appetite for transmitted data for more than three decades, its ability to continue doing so is being challenged by fundamental factors. In this article, we review these factors and examine their consequences in terms of information capacity. In particular, we review the difficulties that are imposed by the nonlinear nature of fiber-optic transmission on the assessment of the capacity and on the definition of fundamental concepts, such as bandwidth and spectral efficiency. We discuss relevant approximations and regimes of operation in which bounds for the capacity can be effectively assessed while covering a broad range of applications ranging from interdatacenter communications to links spanning transoceanic distances. We relate to a broad variety of transmission schemes and discuss the potential benefits of spatial multiplexing with multimode and multicore fibers.State-of-the-art transmission experiments are also reviewed and compared with theoretical capacity bounds.

show abstract

Section: B Polarization-dependent Lossmentioning

confidence: 99%

Challenges in Estimating the Information Capacity of the Fiber-Optic Channel

et al. 2022

View full text Add to dashboard Cite

show abstract

“…During the nonlinear regions (high power), the gap between the proposed closed-form GN model and SSFM QPSK simulation is around 0.5 dB and 2.4 dB in weak coupling, and 2 and 2.2 dB in strong coupling respectively for LP01 and LP11a/b modes. The difference between closed-form GN model with SSFM QPSK simulation is due to the assumption of the first-order perturbation, Gaussian signal and incoherent accumulation of nonlinear interference in the GN model [19][20][21][22][23]. During the linear region, as opposed to the nonlinear part, a linear channel like AWGN is considered, and thus the SNR is independent of the modulation format.…”

Section: Accuracy Of Proposed Closed-form Gn Modelmentioning

confidence: 99%

“…Then, the NLIN was extended to the enhanced GN (EGN) model [28][29][30], by including additional inter-channel interference terms that have been notably experienced in dense WDM systems. Afterwards, many extensions of EGN were presented [31], until the most recent one in which the polarization dependent loss was also considered [19]. It is, however, noticeable that for power allocation applications in common optical fibre links, the use of GN model is sufficient [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, analytical modelling of MDM-WDM systems allows more efficient analysis. In optical fibre communication, perturbative models; which are simple with acceptable accuracy, are more customary used for investigating the performance of optical fibre links [19]. Among these models, particular attention has been devoted to the GN model assuming that the frequency components in the interfering channels are statistically independent.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimal power allocation in nonlinear MDM‐WDM systems using Gaussian noise model

Amirabadi

Kahaei

Nezamalhosseini

et al. 2022

IET Optoelectronics

View full text Add to dashboard Cite

Mode-division multiplexing (MDM) using few-mode fibre (FMF) has received increasing attention to address the exponential growth of data traffic in long-haul optical communication systems. Also, combining the MDM with wavelength-division multiplexing (WDM) is a promising approach for dramatically growing the transmission capacity in such systems. However, a major barrier in this regard is the FMF nonlinear effects, which can significantly reduce the link performance. In this paper, in order to alleviate the FMF nonlinear effects, we focus on power allocation in FMF links by optimizing the input power of each optical WDM channel of each spatial mode, which leads to maximizing the total capacity transmission and also the minimum signal to noise ratio (SNR) margin. The FMF nonlinearity has been already modelled as the Gaussian noise (GN) for which no closed-form formulation has been developed so far. Here, we derive a closed-form GN model for this problem and verify it by comparing with the integral-form GN model and split-step Fourier method. In this approach, an optimal power is independently determined for each channel of each mode by optimizing a capacity maximization and a minimum SNR margin maximization problem in convex forms. The performance of different links including the single mode fibre-WDM, MDMsingle channel, and MDM-WDM are compared using computer simulations. These systems are comprehensively investigated in equal/non-equal required SNR as well as flat/ non-flat amplifier gain scenarios. It is shown that optimized power allocation to each channel of each mode has a significant enhancement in the minimum SNR margin maximization scheme compared to the best equal power allocation. Furthermore, this improvement is much more in non-equal required SNR and the non-flat amplifier gain scenarios, showing the efficiency of the established approach in practical communication links.

show abstract

“…Proposing a low-complexity model for the interaction of ASE and NLI in heterogeneous spans based on perturbation theory [15], [41], [42] --FWM Among the first extensions to the GN model considering stimulated Raman scattering and frequency-dependend loss with hybrid amplification [16], [43] Q SCI+XPM Closed-form GN model in presence of SRS and higher-order dispersion [44] --FWM Analysis of SSFM complexity in ultra wideband systems and proposal of low-complexity GN and EGN model based on sampling [45] --FWM A first extension to the EGN model considering polarization-dependent loss [46] --…”

Section: Fwmmentioning

confidence: 99%