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The Gaussian Noise Model in the Presence of Inter-channel Stimulated Raman Scattering

Semrau, D; Killey, RI; Bayvel, P; (2018) The Gaussian Noise Model in the Presence of Inter-channel Stimulated Raman Scattering. Journal of Lightwave Technology , 36 (14) pp. 3046-3055. 10.1109/JLT.2018.2830973. Green open access

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Abstract

A Gaussian noise (GN) model, precisely accounting for an arbitrary frequency dependent signal power profile along the link, is presented. This allows accurate evaluation of the impact of inter-channel stimulated Raman scattering (ISRS) on the optical Kerr nonlinearity. Additionally, the frequency dependent fiber attenuation can be taken into account and transmission systems that use hybrid amplification schemes can be modeled, where distributed Raman amplification is partly applied over the optical spectrum. For the latter two cases, a set of coupled ordinary differential equations must be numerically solved to obtain the signal power profile yielding a semianalytical model. However for lumped amplification and negligible variation in fiber attenuation, a less complex and fully analytical model is presented denoted as the analytical ISRS GN model. The derived model is exact to first-order for Gaussian modulated signals and extensively validated by numerical split-step simulations. A maximum deviation of only 0.1 dB in nonlinear interference power between simulations and the ISRS GN model is reported. The model is applied to a transmission system that occupies the entire C + L band (10 THz optical bandwidth). At optimum launch power, changes of up to 2 dB in nonlinear interference power due to ISRS are reported. The ISRS GN model is quantitatively compared with other models published in the literature and found to be significantly more accurate.

Type: Article
Title: The Gaussian Noise Model in the Presence of Inter-channel Stimulated Raman Scattering
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/JLT.2018.2830973
Publisher version: https://doi.org/10.1109/JLT.2018.2830973
Language: English
Additional information: This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/
Keywords: C + L band transmission, first-order perturbation, gaussian noise model, nonlinear interference, nonlinear distortion, optical fiber communications, stimulated raman scattering
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10051143
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