Authors:
Bruno R. P. Pinheiro
;
João L. Rebola
and
Adolfo V. T. Cartaxo
Affiliation:
Instituto de Telecomunicações and Instituto Universitário de Lisboa (ISCTE-IUL), Portugal
Keyword(s):
Inter-core Crosstalk, Monte-Carlo Simulation, Multi-core Fibers, Optical Coherent Detection, Space-division Multiplexing.
Related
Ontology
Subjects/Areas/Topics:
Optical Communications and Networking
;
Optics
;
Photonics, Optics and Laser Technology
Abstract:
Inter-core crosstalk (ICXT) can limit the multi-core fiber (MCF) systems performance and transmission reach.
Over the last years, the impact of the ICXT on the performance of MCF optical communication systems with
coherent detection has been investigated in several works. However, the influence of the MCF parameters
and transmitted signal characteristics on the ICXT mechanism and the degradation induced by it on the performance
of coherent detection MCF systems are still to be completely assessed. In this work, the impact
of the ICXT on the performance of coherent detection MCF-based transmission systems is assessed through
numerical simulation considering fiber linear propagation. The metrics used to assess the MCF system performance
are the bit error rate (BER) and the optical signal-to-noise ratio (OSNR) penalty due to the ICXT.
Our results show that the BER and the OSNR penalty due to the detected ICXT, in MCF-based systems with
coherent detection, are influenced by the
skew, time misalignment between the transmitted signals and the
roll-off factor of the transmitted signals. In the range of skew and roll-off factors analyzed, the maximum
reduction of maximum ICXT level for a 1 dB OSNR penalty by appropriate choice of skew and roll-off factor
does not exceed 1.7 dB.
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