Characterization of Multimode Soliton Self-Frequency Shift

Year: 2022

Authors: Zitelli M., Ferraro M., Mangini F., Wabnitz S.

Autors Affiliation: Sapienza Univ Rome, Dept Informat Engn Elect & Telecommun DIET, I-00184 Rome, Italy; CNR, INO, Ist Nazl Ott, I-80078 Pozzuoli, Italy.

Abstract: Optical solitons in multimode fibers exhibit complex dynamics, and peculiar characteristics in terms of pulse duration and energy, which distinguish them from their single-mode counterparts. We propose a theory for Raman-induced soliton self-frequency shift in multimode fibers, that is compared against experimental data of 1-km multimode soliton propagation. Specific values of pulsewidth and energy are found, at which solitons show long-distance stability and better correspondence with the theory of self-frequency shift; those values depend on the input wavelength, but are not related to the duration of the input pulse. Raman delay is affected by a jitter, characterized by a Gaussian statistical distribution, whose standard deviation tends to stabilize to a constant value for increasing pulse energies.

Journal/Review: JOURNAL OF LIGHTWAVE TECHNOLOGY

Volume: 40 (24)      Pages from: 7914  to: 7921

More Information: This work was supported in part by the European Research Council through the European Union’s Horizon 2020 research and innovation Programme under Grants 874596, 740355, and 101081871, in part by the Italian Ministry of University and Research under Grant R18SPB8227, and in part by the Sapienza University of Rome under Grants RG12117A84DA7437 and AR22117A7B01A2EB.
KeyWords: Fiber nonlinear optics; optical solitons; Raman scattering
DOI: 10.1109/JLT.2022.3205846

Citations: 5
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