In the transmission of relatively low power telecom signals, the performance of space-division multiplexed (SDM) transmission systems employing multimode graded-index fiber (GIF) is mostly affected by linear random mode-coupling (RMC) [1], [2]. The study and characterization of power exchanges among the propagating modes, owing to fiber imperfections and bending [3], is of utmost importance in SDM systems, because it involves an appropriate optimization of modal multiplexing and de-multiplexing techniques. Here we propose a 3D modal reconstruction method, using as input condition spatio-temporal bullets Ep(x,y,0,t)=Ap(0,t)Fp(x,y) , describing individual modes, while accounting for laser linewidth and pulse temporal shape. The input 3D bullets are independently propagated using the GNLSE, accounting for chromatic and modal dispersion [4]. RMC is accounted by adding a random phase between modes at input, and weighting the output modal power by power fractions |c i | 2 provided by the experiments; hence, the total output bullet field is given by Etot=∑Mi=1ciEi(x,y,z,t) . By integrating |Etot|2 vs. time, the output near-field is obtained; whereas integration vs. (x,y) yields the instantaneous power profile.

Spatio-Temporal Mode Characterization of Disordered Weakly Nonlinear Graded-Index Multimode Fibers / Zitelli, Mario; Couderc, Vincent; Ferraro, Mario; Mangini, Fabio; Parra-Rivas, Pedro; Sun, Yifan; Wabnitz, Stefan. - (2023), pp. 1-1. (Intervento presentato al convegno 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) tenutosi a Munich, Germany) [10.1109/CLEO/Europe-EQEC57999.2023.10232658].

Spatio-Temporal Mode Characterization of Disordered Weakly Nonlinear Graded-Index Multimode Fibers

Zitelli, Mario;Couderc, Vincent;Ferraro, Mario;Mangini, Fabio;Parra-Rivas, Pedro;Sun, Yifan;Wabnitz, Stefan
2023

Abstract

In the transmission of relatively low power telecom signals, the performance of space-division multiplexed (SDM) transmission systems employing multimode graded-index fiber (GIF) is mostly affected by linear random mode-coupling (RMC) [1], [2]. The study and characterization of power exchanges among the propagating modes, owing to fiber imperfections and bending [3], is of utmost importance in SDM systems, because it involves an appropriate optimization of modal multiplexing and de-multiplexing techniques. Here we propose a 3D modal reconstruction method, using as input condition spatio-temporal bullets Ep(x,y,0,t)=Ap(0,t)Fp(x,y) , describing individual modes, while accounting for laser linewidth and pulse temporal shape. The input 3D bullets are independently propagated using the GNLSE, accounting for chromatic and modal dispersion [4]. RMC is accounted by adding a random phase between modes at input, and weighting the output modal power by power fractions |c i | 2 provided by the experiments; hence, the total output bullet field is given by Etot=∑Mi=1ciEi(x,y,z,t) . By integrating |Etot|2 vs. time, the output near-field is obtained; whereas integration vs. (x,y) yields the instantaneous power profile.
2023
2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
multimode optical fibers; Kerr effect; random mode coupling
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Spatio-Temporal Mode Characterization of Disordered Weakly Nonlinear Graded-Index Multimode Fibers / Zitelli, Mario; Couderc, Vincent; Ferraro, Mario; Mangini, Fabio; Parra-Rivas, Pedro; Sun, Yifan; Wabnitz, Stefan. - (2023), pp. 1-1. (Intervento presentato al convegno 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) tenutosi a Munich, Germany) [10.1109/CLEO/Europe-EQEC57999.2023.10232658].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1689552
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