Estimating Crosstalk Between Diagonal Cores in Four-Core Fibers with Square Lattice Structure

Nakagawa, Mayu; Ohzeki, Masaki; Sasaki, Y.; Takenaga, Katsuhiro; Ichii, Kentaro

doi:10.23919/oecc/psc53152.2022.9850117

Cited by 5 publications

(14 citation statements)

References 5 publications

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“…Fig. 1(b) shows a cross section of the fabricated step-index profile UC-4CF with the standard 125-m cladding [24]. Assuming that all cores are homogeneous (identical), coupled-power equations are given by [24,25] + 𝑔(𝑃 4 − 𝑃 2 ), (1b)…”

Section: Solutions Of Coupled-power Equationsmentioning

confidence: 99%

“…The exact solutions of Eqs. (1a)-(1d) with and without 𝑔 have been derived by Liang et al [25] and Nakagawa et al [24], respectively. In Refs.…”

Section: Solutions Of Coupled-power Equationsmentioning

confidence: 99%

“…In Refs. [24,25], only the results are presented; thus, we show the procedure for deriving the exact solutions in Appendix.…”

Section: Solutions Of Coupled-power Equationsmentioning

confidence: 99%

“…When core 𝑖 is excited with incident power 𝑃 in , 𝑃 𝑖 (𝑧 = 0) = 𝑃 in , the exact solutions [24,25] satisfy the power conservation relation as…”

Section: Solutions Of Coupled-power Equationsmentioning

confidence: 99%

“…In general, adjacent XT ( XT adj ), i.e., intercore XT between adjacent cores, grows linearly with fiber length [20,21,22,23]. More recently, Nakagawa et al [24] have measured intercore XT in a square-layout UC-4CF and found a very interesting behavior of XT diag that grows quadratically with fiber length.…”

Section: Introductionmentioning

confidence: 99%

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Behavior of intercore crosstalk in square-layout uncoupled four-core fibers

Koshiba

Kimura

Nakagawa

et al. 2022

IEICE Electron. Express

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Recently, a very interesting behavior of crosstalk (XT) between diagonal cores (diagonal XT) in a square-layout uncoupled four-core fiber (UC-4CF) that grows quadratically with fiber length has been reported. In this paper, the behavior of intercore XT in squarelayout UC-4CFs is investigated on the basis of a coupled-power theory. To make it easy to understand the physical mechanism of intercore XT behavior, we derive an approximate solution of coupled-power equations. We show that there exists a range of fiber lengths within which the diagonal XT grows quadratically. Finally, we propose a heterogeneous square-layout UC-4CF in which intercore XT could be further suppressed.

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Section: Solutions Of Coupled-power Equationsmentioning

confidence: 99%

“…The exact solutions of Eqs. (1a)-(1d) with and without 𝑔 have been derived by Liang et al [25] and Nakagawa et al [24], respectively. In Refs.…”

Section: Solutions Of Coupled-power Equationsmentioning

confidence: 99%

“…In Refs. [24,25], only the results are presented; thus, we show the procedure for deriving the exact solutions in Appendix.…”

Section: Solutions Of Coupled-power Equationsmentioning

confidence: 99%

“…When core 𝑖 is excited with incident power 𝑃 in , 𝑃 𝑖 (𝑧 = 0) = 𝑃 in , the exact solutions [24,25] satisfy the power conservation relation as…”

Section: Solutions Of Coupled-power Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Behavior of intercore crosstalk in square-layout uncoupled four-core fibers

Koshiba

Kimura

Nakagawa

et al. 2022

IEICE Electron. Express

Self Cite

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Monitoring of Power Over Fiber Signals Using Intercore Crosstalk in ARoF 5G NR Transmission

Altuna,

López-Cardona,

Vázquez

2023

J. Lightwave Technol.

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Power over Fiber (PoF) needs safety and resilience operation of the infrastructure. In this paper, we propose a new crosstalk-based remote monitoring technique of PoF signals in Spatial Division Multiplexing optical networks with no additional consumption at the remote radio head (RRH).We demonstrate this technique in a 250 m 7-core Multicore Fiber (MCF) transmitting three multiplexed 256-QAM 5G NR optical signals with a total throughput of 1.8 Gbps, a low-speed communications channel between a Central Office and a Remote Radio Head (RRH), and a PoF signal delivering to feed the RRH's control board. The 5G NR optical signals are received at the RRH with EVM values within the limits stablished in the 3GPP 5G standard. The low-speed communications channel remotely manages the power supplied to a Radio Frequency Power Amplifier located at the RRH. The PoF signal is used to supply up to 131 mW to the control board of the RRH. The monitoring channel can accurately follow the optical power injected into the MCF or the optical power received at the RRH thanks to a real-time algorithm and an ad-hoc Matlab application, which also allows to control the PoF source and the low-speed communications channel.

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Unified Analytical Model Based on Lorentzian and Squared Lorentzian Power Spectrum Densities for Evaluating Crosstalk in Multicore Fibers

Koshiba,

Saitoh

2024

J. Lightwave Technol.

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Estimating Crosstalk Between Diagonal Cores in Four-Core Fibers with Square Lattice Structure

Cited by 5 publications

References 5 publications

Behavior of intercore crosstalk in square-layout uncoupled four-core fibers

Behavior of intercore crosstalk in square-layout uncoupled four-core fibers

Monitoring of Power Over Fiber Signals Using Intercore Crosstalk in ARoF 5G NR Transmission

Unified Analytical Model Based on Lorentzian and Squared Lorentzian Power Spectrum Densities for Evaluating Crosstalk in Multicore Fibers

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