A Closed-Form Expression for the Gaussian Noise Model in the Presence of Inter-Channel Stimulated Raman Scattering Extended for Arbitrary Loss and Fibre Length

A closed-form formula for the nonlinear interference (NLI) estimation using the Gaussian noise (GN) model in the presence of inter-channel stimulated Raman scattering (ISRS) is derived. The formula enables accurate estimation of the NLI evolution along any portion of the fibre span together with arb...

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Bibliographic Details
Published in:Journal of lightwave technology Vol. 41; no. 11; pp. 3577 - 3586
Main Authors: Buglia, H., Jarmolovicius, M., Vasylchenkova, A., Sillekens, E., Galdino, L., Killey, R. I., Bayvel, P.
Format: Journal Article
Language:English
Published: New York IEEE 01.06.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Closed form solutions
closed-form approximation
Exact solutions
Fitting
Gaussian noise model
inter-channel stimulated Raman scattering
Mathematical models
nonlinear distortion
nonlinear interference
Numerical integration
optical fiber communications
Optical fibers
Optical scattering
Optimization
Raman spectra
Random noise
S+C+L band transmission
Signal to noise ratio
Ultra-wideband transmission
Ultrawideband
ISSN:0733-8724, 1558-2213
Online Access:Get full text
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Description
Summary:A closed-form formula for the nonlinear interference (NLI) estimation using the Gaussian noise (GN) model in the presence of inter-channel stimulated Raman scattering (ISRS) is derived. The formula enables accurate estimation of the NLI evolution along any portion of the fibre span together with arbitrary values of optical fibre losses. The formula also accounts for wavelength-dependent fibre parameters, variable modulation formats and launch power profiles. The formula is suitable for ultra-wideband (UWB) optical transmission systems and its accuracy is assessed for a system with 20 THz optical bandwidth over the entire S-, C-, and L- band through comparison with numerical integration of the ISRS GN model and split-step Fourier method (SSFM) simulations in point-to-point transmission and inline NLI estimation scenarios.
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ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2023.3256185