Statistics of mode couplings induced by concatenated multiple connections in weakly-coupled few-mode fibers

被引：1
作者：
Igarashi K. [1 ]
Kawabata G. [1 ]
机构：
[1] Osaka University, 2-1 Yamadaoka, Suita, Osaka
来源：
Igarashi, Koji (iga@comm.eng.osaka-u.ac.jp) | 1600年 / Elsevier B.V., Netherlands卷 / 467期
基金：
日本学术振兴会;
关键词：
Few-mode fiber; Mode division multiplexing;
D O I：
10.1016/j.optcom.2020.125685
中图分类号：
学科分类号：
摘要：
We numerically investigate the statistical characteristics of mode couplings induced by concatenated multiple few-mode fiber connections with lateral misalignments in weakly-coupled mode division multiplexed (MDM) systems. For the currently-feasible connectors, the probability of the crosstalk ratio being smaller than -20 dB is remarkably degraded as increasing the number of the connections. The currently-feasible connectors are not applicable to the weakly-coupled MDM systems. In order to suppress the mode crosstalk by smaller than -20 dB, the misalignment deviation is required to be smaller than 0.04, which corresponds to be 0.3% of the mode field diameter of the fundamental mode. In addition, we propose the simple model giving us intuitional understanding for mode couplings induced by few-mode fiber connections. © 2020 Elsevier B.V.
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