Characterization of Stimulated Raman Scattering in Field-Deployed Coupled-Core Multi-Core Fibers
Year: 2025
Type: article
Abstract: We report the first experimental characterization of stimulated Raman scattering (SRS) in coupled-core multi-core fibers (MCFs). The experiment was performed using field-deployed fibers, with two complementary methodologies. First, the effective Raman gain coefficient was directly measured over a bandwidth of 120 nm – covering the upper S-, C- and lower L-bands – with the Raman pump being injected into different combinations of fiber cores and using either co- or counter-propagating signal. Second, we analyzed the spectral power tilt induced by SRS when transmitting a wavelength-division multiplexed signal spanning the entire C-band from 1529.4 nm to 1564.2 nm, which was found to be in agreement with the Raman gain coefficient measurements. Measurements performed on a co-deployed standard single-mode fiber (SMF) produced similar results. This observation, together with the notion that the Raman gain coefficient should be similar in MCFs and SMFs, validates our earlier derived model of SRS in fibers with strong mode mixing.
Source: Journal of Lightwave Technology
Authors: Giammarco Di Sciullo, Lucas A. Zischler, Divya A. Shaji, Qi Wu, Ruben S. Luís, Robert Emmerich, Menno van den Hout, Benjamin J. Puttnam, Georg Rademacher, Chiara Lasagni, Paolo Serena, Alberto Bononi, Tetsuya Hayashi, Colja Schubert, Chigo Okonkwo, Roland Ryf, Luca Palmieri, Mark Shtaif, Andrea Marotta, Antonio Mecozzi, Cristian Antonelli
Institutions: University of L'Aquila, National Institute of Information and Communications Technology, Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute, Eindhoven University of Technology, University of Stuttgart, University of Parma, Sumitomo Electric Industries (Japan), University of Padua, Tel Aviv University
Language: English
Topic: Optical Network Technologies
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,645
Funders: European Commission, NextGenerationEU
OpenAlex ID: W7106016338