Spacing-Tailored Multicore Fiber Interface for Efficient FIFO Devices

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

1 Scopus Citations
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Author(s)

  • Wei Ji
  • Zihao Shen
  • Ruowei Yu
  • Caoyuan Wang
  • Zhengyu Yan
  • Liying Liu
  • Lei Xu
  • Wei Chen
  • Limin Xiao

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)5682-5688
Journal / PublicationJournal of Lightwave Technology
Volume40
Issue number16
Online published24 May 2022
Publication statusPublished - 15 Aug 2022

Abstract

Multicore fibers (MCFs) have attracted intense attention to overcome the capacity limit of single-core optical fiber communication system. However, as indispensable connection devices between the MCF and the individual single mode fiber (SMF), fan-in and fan-out (FIFO) devices are challenging to achieve overall performance in terms of coupling efficiency, crosstalk, return loss, and device compactness. Here we develop an MCF reverse-tapering technique to increase the core-to-core spacing of the MCF and construct a spacing-tailored interface between the MCF and the normal SMF bundle. The fabricated FIFO device for the small-core MCF with narrow core-to-core spacing of 35 µm features a low average coupling loss (∼0.6 dB), extraordinarily low crosstalk (<−65 dB) and a return loss (<−60 dB) without using any bridge elements, where the remarkably low crosstalk is about 20 dB lower than using special bridge fibers for the same type of MCF. The flexibility of reverse tapering of MCFs can overcome its intrinsic integration challenge and provide a powerful approach to constructing all-fiber FIFO devices with compact construction and excellent overall performance.

Research Area(s)

  • Bridges, Couplings, Crosstalk, fan-in and fan-out devices, Fires, Multicore fibers, Optical fiber devices, Optical fiber networks, Optical fibers, space division multiplexing

Citation Format(s)

Spacing-Tailored Multicore Fiber Interface for Efficient FIFO Devices. / Ji, Wei; Shen, Zihao; Yu, Ruowei et al.

In: Journal of Lightwave Technology, Vol. 40, No. 16, 15.08.2022, p. 5682-5688.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review