Experimental Analysis on Variations and Accuracy of Crosstalk in Trench-Assisted Multi-core Fibers

Hui Yuan; Alessandro Ottino; Yunnuo Xu; Arsalan Saljoghei; Tetsuya Hayashi; Tetsuya Nakanishi; Eric Sillekens; Lidia Galdino; Polina Bayvel; Zhixin Liu; Georgios Zervas

arXiv · 2008.08034

Experimental Analysis on Variations and Accuracy of Crosstalk in Trench-Assisted Multi-core Fibers

Hui Yuan·Alessandro Ottino·Yunnuo Xu·Arsalan Saljoghei·Tetsuya Hayashi·Tetsuya Nakanishi·Eric Sillekens·Lidia Galdino·Polina Bayvel·Zhixin Liu·Georgios Zervas

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Abstract

Space division multiplexing using multi-core fiber (MCF) is a promising solution to cope with the capacity crunch in standard single-mode fiber based optical communication systems. Nevertheless, the achievable capacity of MCF is limited by inter-core crosstalk (IC-XT). Many existing researches treat IC-XT as a static interference, however, recent research shows that IC-XT varies with time, wavelength and baud rate. This inherent stochastic feature requires a comprehensive characterization of the behaviour of MCF to its application in practical transmission systems and the theoretical understanding of IC-XT phenomenon. In this paper, we experimentally investigate the IC-XT behaviour of an 8-core trench-assisted MCF in a temperature-controlled environment, using popular modulation formats. We compare the measured results with the theoretical prediction to validate the analytical IC-XT models previously developed. Moreover, we explore the effects of the measurement configurations on the IC-XT accuracy and present an analysis on the IC-XT step distribution. Our results indicate that a number of transmission parameters have significant influence on the strength and volatility of IC-XT. Moreover, the averaging time of the power meter and the observation time window can affect the value of the observed IC-XT, the degrees of the effects vary with the type of the source signals.

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Hui Yuan, Alessandro Ottino, Yunnuo Xu, Arsalan Saljoghei, Tetsuya Hayashi, Tetsuya Nakanishi, Eric Sillekens, Lidia Galdino, Polina Bayvel, Zhixin Liu, Georgios Zervas. 2020-08-07. Experimental Analysis on Variations and Accuracy of Crosstalk in Trench-Assisted Multi-core Fibers. https://arxiv.org/abs/2008.08034

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