Inter-Core Crosstalk in Multicore Fibers: Impact on 56-Gbaud/{\lambda}/Core PAM-4 Transmission
Aleksejs Udalcovs, Rui Lin, Oskars Ozolins, Lin Gan, Lu Zhang, Xiaodan, Pang, Richard Schatz, Anders Djupsj\"obacka, Ming Tang, Songnian Fu, Deming, Liu, Weijun Tong, Sergei Popov, Gunnar Jacobsen, and Jiajia Chen
TL;DR
This paper experimentally investigates how inter-core crosstalk affects high-speed 56-Gbaud PAM-4 signal quality in multicore fibers, highlighting the wavelength dependence of crosstalk in weakly-coupled seven-core fibers over 2.5 km.
Contribution
It provides new experimental insights into the wavelength-dependent impact of inter-core crosstalk on high-speed data transmission in multicore fibers.
Findings
Crosstalk varies with wavelength in the 1540-1560 nm range.
Crosstalk significantly degrades signal quality after 2.5 km.
Impact differs between weakly-coupled and uncoupled fibers.
Abstract
We experimentally demonstrate the impact of inter-core crosstalk in multicore fibers on 56Gbaud PAM-4 signal quality after 2.5-km transmission over a weakly-coupled and uncoupled sevencore fibers, revealing the crosstalk dependence on carrier central wavelength in range of 1540-1560 nm.
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Taxonomy
TopicsOptical Network Technologies · Advanced Optical Network Technologies · Semiconductor Lasers and Optical Devices