期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 38, 期 7, 页码 1668-1677出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2019.2959191
关键词
Modal dispersion; mode-dependent loss; optical fiber communications; space-division multiplexing
资金
- Italian Government
- project Innovating City Planning through Information and Communication Technologies (INCIPICT)
- PRIN 2017 project Fiber Infrastructure for Research on Space-Division Multipled Transmission (FIRST)
- Israel Science Foundation [1401/16]
Signal propagation in Space-Division Multiplexed (SDM) systems in the linear regime is dominated by the effects of modal dispersion (MD) and mode-dependent loss (MDL). While multiple models have been proposed for characterizing these phenomena separately or to study the effect of MD on MDL, the effect of MDL on the system MD has never been analyzed. In this article, wereport such an analysis, where the inclusion ofMDLis accounted for by introducing a complexMDvector t. We show that the signal delay spread, quantified by the duration of the intensity impulse response function, is not affected by the presence of MDL, and its functional dependence on t remains the same as in the absence of MDL (in which case t is a real-valued vector). The model, which represents SDM systems operating in the regime of strong coupling between modes, is validated by comparisonwith experimental data.
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