New type of multicore fiber

Kashima, Norio; Maekawa, E.; Nihei, Fumihiro

doi:10.1364/ofc.1982.thaa5

Cited by 12 publications

(2 citation statements)

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“…This phenomenon can be explained by the variation of equivalent propagation constant in outer cores due to bending and twisting effects [32]. Considering the fiber bending and twisting effects, the propagation constant difference between neighboring cores is a function of propagation distance and becomes zero at many positions during the propagation, if the bending radius is smaller than a specific threshold value of R pk , which is given by [32] R pk = n eff Λ/Δn eff (5) where n eff and Δn eff are the effective index of a core and the effective index difference between the non-identical cores, respectively, and Λ is the core-to-core distance. The crosstalk is degraded at bending radii < R pk due to indexmatching between non-identical cores [32,33,48].…”

Section: Heterogeneous Multicore Fibermentioning

confidence: 99%

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Multicore fibers for large capacity transmission

Saitoh

Matsuo

2013

Nanophotonics

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Abstract: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.

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Section: Heterogeneous Multicore Fibermentioning

confidence: 99%

“…The fabricated MCF in late 1970s was drawn from one preform including multiple cores. In 1982, another type of MCF, which is called bunch fiber, was proposed [5]. The bunch fiber is drawn from bunched multiple preforms and each preform includes one respective core.…”

Section: Introductionmentioning

confidence: 99%