1.2 Pb/s throughput transmission using a 160 μm cladding, 4-core, 3-mode fiber
Date
2019
Authors
Luis, R.S.
Rademacher, G.
Puttnam, B.J.
Eriksson, T.A.
Furukawa, H.
Ross-Adams, A.
Gross, S.
Withford, M.
Riesen, N.
Sasaki, Y.
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Journal article
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Journal of Lightwave Technology, 2019; 37(8):1798-1804
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Abstract
This paper extends a recent demonstration of 1.2 Pb/s transmission using a few-mode multi-core fiber with a cladding diameter of 160 μm. The fiber was a 3.37 km, 4-core, 3-mode few-mode multi-core fiber with spatial multiplexing and demultiplexing performed with especially designed mode-selective couplers. We transmitted 368 wavelength division multiplexed spatial super channels across the C and L bands. We selected polarization-division-multiplexed-256-quadrature amplitude modulation format to maximize the generalized mutual information of the transmitted signals, which were decoded using punctured soft-decision forward error correction with a code rate granularity of 0.01. The maximum crosstalk of the system was -31 dB between LP 11 modes of adjacent cores, leading to a Q-factor penalty of approximately 0.5 dB. We estimated the system mode-dependent loss values ranging from 3 dB to 5 dB across C and L bands with negligible wavelength dependence.
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Copyright 2019 IEEE