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Authors: André Sandmann ; Andreas Ahrens and Steffen Lochmann

Affiliation: University of Technology and Business and Design, Germany

ISBN: 978-989-758-044-4

Keyword(s): Multiple-Input Multiple-Output System, Optical Fibre Transmission, Multimode fiber (MMF), Signal Deconvolution, Equalisation.

Related Ontology Subjects/Areas/Topics: Optical Communication Systems ; Optical Fiber Technologies ; Optical Modulation and Signal Processing ; Telecommunications

Abstract: Within the last years multiple-input multiple-output (MIMO) transmission has reached a lot of attention in the optical fibre community. Theoretically, the concept of MIMO is well understood. However, practical implementations of optical components are in the focus of interest for further computer simulations. That’s why in this contribution the specific impulse responses of the (2×2) MIMO channel, including a 1.4 km multi-mode fibre and optical couplers at both ends, are measured for operating wavelengths of 1326 nm and 1576 nm. Since semiconductor diode lasers, capable of working at different wavelengths, are used for the characterization of the underlying optical MIMO channel, inverse filtering is needed for obtaining the respective impulse responses. However, the process of inverse filtering also known as signal deconvolution is critical in noisy environments. That’s why different approaches such as Wiener and parametric filtering are studied with respect to different optimization criteria. Using these obtained impulse responses a baseband MIMO data transmission is modelled. In order to create orthogonal channels enabling a successful transmission, a MIMO zero forcing (ZF) equaliser is implemented and analysed. Our main results given as an open eye-diagram and calculated bit-error rates show the successful implementation of the MIMO transmission system. (More)

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Paper citation in several formats:
Sandmann, A.; Ahrens, A. and Lochmann, S. (2014). Equalisation of Measured Optical MIMO Channels.In Proceedings of the 5th International Conference on Optical Communication Systems - Volume 1: OPTICS, (ICETE 2014) ISBN 978-989-758-044-4, pages 37-44. DOI: 10.5220/0005019600370044

@conference{optics14,
author={André Sandmann. and Andreas Ahrens. and Steffen Lochmann.},
title={Equalisation of Measured Optical MIMO Channels},
booktitle={Proceedings of the 5th International Conference on Optical Communication Systems - Volume 1: OPTICS, (ICETE 2014)},
year={2014},
pages={37-44},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005019600370044},
isbn={978-989-758-044-4},
}

TY - CONF

JO - Proceedings of the 5th International Conference on Optical Communication Systems - Volume 1: OPTICS, (ICETE 2014)
TI - Equalisation of Measured Optical MIMO Channels
SN - 978-989-758-044-4
AU - Sandmann, A.
AU - Ahrens, A.
AU - Lochmann, S.
PY - 2014
SP - 37
EP - 44
DO - 10.5220/0005019600370044

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