A Closed-Form Approximation of the Gaussian Noise Model in the Presence of Inter-Channel Stimulated Raman Scattering

Abstract

An accurate, closed-form expression evaluating the nonlinear interference (NLI) power in coherent optical transmission systems in the presence of inter-channel stimulated Raman scattering (ISRS) is derived. The analytical result enables a rapid estimate of the signal-to-noise ratio (SNR) and avoids the need for integral evaluations and split-step simulations. The formula also provides new insight into the underlying parameter dependence of ISRS on the NLI. The proposed result is applicable for dispersion unmanaged, ultra-wideband transmission systems that use optical bandwidths of up to 15 THz. The accuracy of the closed-form expression is compared to numerical integration of the ISRS Gaussian Noise model and split-step simulations in a point-to-point transmission, as well as in a mesh optical network scenario.

arXiv commentVersion 2: The plots of figure 4 and 5 were placed out of order in version 1. In version 2, they have been swapped and are now in correct order

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• The Gaussian Noise Model in the Presence of Inter-channel Stimulated Raman Scattering
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Cited by in corpus (6)

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• High-Cardinality Geometrical Constellation Shaping for the Nonlinear Fibre Channel
• Optimising O-to-U Band Transmission Using Fast ISRS Gaussian Noise Numerical Integral Model
• Modelling the delayed nonlinear fiber response in coherent optical communications
• Accurate Closed-Form Real-Time EGN Model Formula Leveraging Machine-Learning over 8500 Thoroughly Randomized Full C-Band Systems