KIT | KIT-Bibliothek | Impressum | Datenschutz

Fast Single-Mode Fiber Nonlinearity Monitoring: An Experimental Comparison Between Split-Step and Nonlinear Fourier Transform-Based Methods

de Koster, Pascal; Schulz, Olaf; Koch, Jonas; Pachnicke, Stephan; Wahls, Sander ORCID iD icon 1
1 Institut für Industrielle Informationstechnik (IIIT), Karlsruher Institut für Technologie (KIT)

Abstract:

We experimentally investigate the problem of monitoring the Kerr-nonlinearity coefficient γ from transmitted and received data for a single-mode fiber link of 1600 km length. We compare the accuracy and speed of three different approaches. First, a standard split-step Fourier method is used to predict the output at various γ values, which are then compared to the measured output. Second, a recently proposed nonlinear Fourier transform (NFT)-based method, which matches solitonic eigenvalues in the transmitted and received signals for various γ values. Third, a novel fast version of the NFT-based method, which only matches the highest few eigenvalues. Although the NFT-based methods do not scale with link length, we demonstrate that the SSFM-based method is significantly faster than the basic NFT-based method for the considered link of 1600 km, and outperforms even the faster version. However, for a simulated link of 8000 km, the fast NFT-based method is shown to be faster than the SSMF-based method, although at the cost of a small loss in accuracy.


Verlagsausgabe §
DOI: 10.5445/IR/1000165039
Veröffentlicht am 28.11.2023
Originalveröffentlichung
DOI: 10.1109/JPHOT.2023.3322635
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Dimensions
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Industrielle Informationstechnik (IIIT)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2023
Sprache Englisch
Identifikator ISSN: 1943-0655, 1943-0647
KITopen-ID: 1000165039
Erschienen in IEEE Photonics Journal
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Band 15
Heft 6
Seiten Art.-Nr.: 7202313
Vorab online veröffentlicht am 09.10.2023
Schlagwörter Single-mode fiber, Kerr-nonlinearity, characterization, split-step Fourier method, nonlinear Schrödinger equation, nonlinear Fourier transform, forward scattering transform, solitons
Nachgewiesen in Scopus
Dimensions
Web of Science
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page