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Time Domain Simulation of Optical MIMO Channels

Köhnke H., Bartmann P., Ahrens A., Lochmann S.

Przegląd Elektrotechniczny

2015

R. 91, nr 4

56--59

In recent years the interest in optical multiple-input multiple-output (MIMO) transmission has increased significantly. Focus of this work is the development of a time domain model of optical MIMO channels using modal diversity. Next to modal and chromatic dispersion, modal crosstalk caused by mode combiner, splitter, splices and also modal coupling within the transmitting fiber can be taken into account. The simulated MIMO impulse responses are validated by practical measurements. The channel measurements confirm the accuracy of the proposed time domain model.

W artykule omawia się optyczny system transmisji typu MIMO (multiple input – multiple output). Zaproponowano model czasowy optycznego kanału MIMO. Wzięto pod uwagę modalną i chromatyczną dyspersję , modalny crosstalk (przesłuch) oraz modalne sprzężenie włókna optycznego.

TDR-based examination of DSL transmission line

Opalska K., Burd A.

Electronics and Telecommunications Quarterly

2008

Vol. 54, No 3

357-366

The paper presents results of TDR-based DSL line characterization. Measurement and computer analysis results are included for two distinct modes of TDR system: step and pulse. Measurement results emphasize the influence of a skin effect, which significantly limits measurement system resolution and accuracy. Results of numerous simulations allow for estimation of the dependence of reflected signal parameters on testing pulse width and/or length of line being examined.