Crosstalk variation of multi-core fibre due to fibre bend

Hayashi, Tetsuya; Nagashima, Toru; Shimakawa, Osamu; Sasaki, Takashi; Sasaoka, Eisuke

doi:10.1109/ecoc.2010.5621143

Cited by 83 publications

(60 citation statements)

References 5 publications

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“…Theoretically, the maximum normalized-power transferred between cores can be effectively suppressed by introducing slightly different cores, if there is no perturbation in MCFs. Based on this concept, several heterogeneous MCFs have been fabricated [32,34] and it was found that there is large differences between the earlier theoretical prediction and the measured crosstalk in heterogeneous MCFs. Hayashi et al have revealed that this discrepancy originates from the large perturbation which occurred in actual MCFs and that the bending perturbation is crucial for predicting the crosstalk in heterogeneous MCFs [32].…”

Section: Heterogeneous Multicore Fibermentioning

confidence: 99%

“…Based on this concept, several heterogeneous MCFs have been fabricated [32,34] and it was found that there is large differences between the earlier theoretical prediction and the measured crosstalk in heterogeneous MCFs. Hayashi et al have revealed that this discrepancy originates from the large perturbation which occurred in actual MCFs and that the bending perturbation is crucial for predicting the crosstalk in heterogeneous MCFs [32]. In a bent heterogeneous MCF, when the bending radius is smaller than a specific value, there is a linear relation between a bending radius in a logarithmic scale and a crosstalk values as in a homogeneous MCF.…”

Section: Heterogeneous Multicore Fibermentioning

confidence: 99%

“…Coupled MCFs supporting single transverse mode and multi transverse modes have been investigated for high power fiber laser applications [9,10], since they are able to be used as large-mode-area (LMA) fibers, while the coupled MCFs supporting a few supermodes can be used as few-mode fibers (FMFs) for large capacity transmission experiments with mode-division multiplexing (MDM) technique [11][12][13][14]. In terms of core arrangement in uncoupled MCFs, homogeneous MCFs with identical multiple cores [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] and heterogeneous MCFs with several kinds of different cores [31][32][33][34][35] have been reported. In addition, each core can be designed to support not only single mode but also few modes and multi modes, and they can be called single-mode MCF (SM-MCF), few-mode MCF (FM-MCF) [36][37][38][39][40][41][42], and multimode MCF (MM-MCF) [43], respectively.…”

Section: Crosstalk and Core Density In Multicore Fibersmentioning

confidence: 99%

“…The crosstalk in actual MCFs shows statistical characteristics and a coupled-mode theory [32,47,48] and a coupledpower theory [48][49][50] ,…”

Section: Crosstalk and Core Density In Multicore Fibersmentioning

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%

Section: Heterogeneous Multicore Fibermentioning

confidence: 99%

Section: Crosstalk and Core Density In Multicore Fibersmentioning

confidence: 99%

“…The crosstalk in actual MCFs shows statistical characteristics and a coupled-mode theory [32,47,48] and a coupledpower theory [48][49][50] ,…”

Section: Crosstalk and Core Density In Multicore Fibersmentioning

confidence: 99%

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Multicore fibers for large capacity transmission

Saitoh

Matsuo

2013

Nanophotonics

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“…However, one of the most critical issues impending efficient usage of MCF as OI, is inter-core crosstalk [10][11][12][13]. The intercore crosstalk inevitably occurs due to the mode coupling between the adjacent cores, and as a consequence limits the transmission performance of ultra-short and short-reach optical interconnects.…”

Section: Introductionmentioning

confidence: 99%

Augmenting data rate performance for higher order modulation in triangular index profile multicore fiber interconnect

Mishra

Priye

Rahman

2016

Optics Communications

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent repository link AbstractA triangular profile multicore fiber (MCF) optical interconnect (OI) is investigated to augment performance that typically degrades at high data rates for higher order modulation in a short reach transmission system. Firstly, probability density functions (PDFs) variation with inter-core crosstalk is calculated for 8-core MCF OI with different index profile in the core and it was observed that the triangular profile MCF OI is the most crosstalk tolerant. Next, symbol error probability (SEP) for higher order quadrature phase shift keying (QPSK) modulated signal due to inter-core crosstalk is analytically obtained and their dependence on typical characteristic parameters are examined. Further, numerical simulations are carried out to compare the error performance of QPSK for step index and triangular index MCF OI by generating eye diagram at 40 Gbps per channel. Finally, it is shown that MCF OI with triangular index profile supporting QPSK has double spectral efficiency with tolerable trade off in SEP as compared with those of binary phase shift keying (BPSK) at high data rates which is scalable up to 5 Tbps.

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