Multicore fibers for large capacity transmission

Nanophotonics

article

Kunimasa Saitoh¹  Shoichiro Matsuo¹ 

[1] Graduate School of Information Science and Technology, Hokkaido University

关键词: multicore fiber;    few-mode fiber;    crosstalk;    space division multiplexing;   

DOI  :  10.1515/nanoph-2013-0037

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

We experience Internet traffic growth of 100 times every 10 years. However, the capacity of existing standard single-mode fiber is approaching its fundamental limit regardless of significant realization of transmission technologies which allow for high spectral efficiencies. Space division multiplexing (SDM) based on multicore fibers (MCFs) has emerged as a solution to the problem of saturation of the capacity of optical transmission systems. This article presents the recent progress on the MCFs for future large capacity long-distance transmission systems. In MCFs, there is a tradeoff relationship between low crosstalk and high multiplicity, therefore the maximum number of cores and the core arrangement have to be carefully determined based on the required crosstalk level and core size. The state-of-the-art of fabricated MCFs and the transmission experiments using MCFs are reviewed. The current maximum capacity-distance product in MCF transmission is 368.2 (184.1+184.1) Pb/s/fiber km with the relative spatial efficiency of 4.7 compared with a standard single-mode fiber. In order to increase the spatial efficiency as well as the capacity-distance product further in MCFs, the possibility of heterogeneous MCFs and few-mode MCFs is also presented.

【 授权许可】

CC BY