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http://hdl.handle.net/10071/17227
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Title: Characterization of the stochastic time evolution of short-term average intercore crosstalk in multicore fibers with multiple interfering cores
Authors: Alves, T. M. F.
Cartaxo, A. V. T.
Issue Date: 2018
Publisher: The Optical Society
Abstract: A theoretical model for the stochastic time evolution of the intercore crosstalk (ICXT) in homogeneous weakly-coupled multicore fibers (MCF) with multiple interfering cores is proposed and validated experimentally. The model relies on the introduction of non-stationary time varying random phase shifts at every center point between the phase matching points of the MCF where the di erence of the e ective refractive indexes of the core of the originating signal and the core su ering from ICXT is zero. Closed form-expressions for the autocovariance of the short-term average ICXT (STAXT) with stationary and non-stationary phase shift models in MCFs with multiple excited cores are derived and validated by comparison with experimental results. These expressions enable estimating the decorrelation time of the STAXT generated by multiple interfering cores from the decorrelation times of the STAXT generated by each pair of cores. The proposed model and the ICXT measurements taken continuously over more than 150 hours show that the decorrelation time of the STAXT generated by multiple interfering cores exceeds the one obtained for the pair of cores with shorter decorrelation time. The proposed model is increasingly important to simulate and design MCF-based systems where the ICXT dynamics must be properly accounted for to develop e cient ICXT-tolerant techniques.
Peer reviewed: yes
URI: https://ciencia.iscte-iul.pt/id/ci-pub-54109
http://hdl.handle.net/10071/17227
DOI: 10.1364/OE.26.004605
ISSN: 1094-4087
Appears in Collections:IT-RI - Artigo em revista internacional com arbitragem científica

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