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Crosstalk Impact on the Performance of Wideband Multicore-Fiber Transmission Systems

Luis, RS; Rademacher, G; Puttnam, BJ; Semrau, D; Killey, R; Bayvel, P; Awaji, Y; (2020) Crosstalk Impact on the Performance of Wideband Multicore-Fiber Transmission Systems. IEEE Journal of Selected Topics in Quantum Electronics , 26 (4) , Article 4400609. 10.1109/JSTQE.2020.2975662. Green open access

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Abstract

This work presents an evaluation of the crosstalk impact on the signal-to-noise ratio (SNR) of long-distance C and L band wavelength-division multiplexing (WDM) systems using homogeneous multicore fibers with weakly coupled cores. It is experimentally shown that the crosstalk-induced SNR penalty is independent of the transmission distance on sufficiently long uniform links. This results from the approximately linear scaling of the noise contributions from amplified spontaneous emission, fiber nonlinearity, and crosstalk with the transmission distance. The crosstalk-induced SNR penalty on C and L band WDM long distance links is experimentally evaluated, showing significant degradation of signals located towards the long edge of the L-band. Up to 3.8 dB penalty was observed on a 3866 km link, in agreement with theoretical predictions. We perform a theoretical analysis of the wavelength allocation of densely packed channels for long distance WDM systems with and without the presence of crosstalk. It is shown that these systems favor the use of relatively short transmission wavelength ranges to minimize the crosstalk impact at long wavelengths. This contrasts with systems without crosstalk, which favor the low loss wavelength region of the transmission fiber.

Type: Article
Title: Crosstalk Impact on the Performance of Wideband Multicore-Fiber Transmission Systems
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/JSTQE.2020.2975662
Publisher version: https://doi.org/10.1109/JSTQE.2020.2975662
Language: English
Additional information: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
Keywords: Science & Technology, Technology, Physical Sciences, Engineering, Electrical & Electronic, Quantum Science & Technology, Optics, Physics, Applied, Engineering, Physics, Signal to noise ratio, Crosstalk, Wavelength division multiplexing, Multicore processing, Wideband, Optical crosstalk, Optical signal processing, Spatial division multiplexing (SDM), multicore fiber (MCF), crosstalk, wavelength-division multiplexing (WDM), NOISE, PROPAGATION, MODEL, TIME
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10094975
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