We introduce and experimentally demonstrate the concept of all-optical beam switching in graded-index multimode optical fibers. Nonlinear coupling between orthogonally polarized seed and signal beams permits to control the spatial beam quality at the fiber output. Remarkably, we show that even a few-mode control beam whose power is about ten times lower than that of the total beam may substantially enhance the quality of an intense, highly multimode signal beam. We propose a simple geometrical representation of the beam switching operation, whose validity is quantitatively confirmed by the experimental mode decomposition of the output beam. All-optical switching of multimode beams may find important applications in high-power beam delivery and fiber lasers.

Multimode optical fiber beam-by-beam cleanup / Ferraro, Mario; Mangini, Fabio; Leventoux, Yann; Tonello, Alessandro; Zitelli, Mario; Mansuryan, Tigran; Sun, Yifan; Fevrier, Sebastien; Krupa, Katarzyna; Kharenko, Denis; Wabnitz, Stefan; Couderc, Vincent. - In: JOURNAL OF LIGHTWAVE TECHNOLOGY. - ISSN 0733-8724. - 41:10(2023), pp. 3164-3174. [10.1109/JLT.2023.3239385]

Multimode optical fiber beam-by-beam cleanup

Ferraro, Mario;Mangini, Fabio;Zitelli, Mario;Sun, Yifan;Wabnitz, Stefan;Couderc, Vincent
2023

Abstract

We introduce and experimentally demonstrate the concept of all-optical beam switching in graded-index multimode optical fibers. Nonlinear coupling between orthogonally polarized seed and signal beams permits to control the spatial beam quality at the fiber output. Remarkably, we show that even a few-mode control beam whose power is about ten times lower than that of the total beam may substantially enhance the quality of an intense, highly multimode signal beam. We propose a simple geometrical representation of the beam switching operation, whose validity is quantitatively confirmed by the experimental mode decomposition of the output beam. All-optical switching of multimode beams may find important applications in high-power beam delivery and fiber lasers.
2023
optical fibers; Kerr effect; optical switching; optical signal processing
01 Pubblicazione su rivista::01a Articolo in rivista
Multimode optical fiber beam-by-beam cleanup / Ferraro, Mario; Mangini, Fabio; Leventoux, Yann; Tonello, Alessandro; Zitelli, Mario; Mansuryan, Tigran; Sun, Yifan; Fevrier, Sebastien; Krupa, Katarzyna; Kharenko, Denis; Wabnitz, Stefan; Couderc, Vincent. - In: JOURNAL OF LIGHTWAVE TECHNOLOGY. - ISSN 0733-8724. - 41:10(2023), pp. 3164-3174. [10.1109/JLT.2023.3239385]
File allegati a questo prodotto
File Dimensione Formato  
Ferraro_Multimode_pre-print_2023.pdf

accesso aperto

Note: preprint
Tipologia: Documento in Pre-print (manoscritto inviato all'editore, precedente alla peer review)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 3.46 MB
Formato Adobe PDF
3.46 MB Adobe PDF
Ferraro_Multimode_2023.pdf

solo gestori archivio

Note: reprint
Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 1.32 MB
Formato Adobe PDF
1.32 MB Adobe PDF   Contatta l'autore

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1679161
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 6
  • ???jsp.display-item.citation.isi??? 6
social impact