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[IEEE TENCON 2019 - 2019 IEEE Region 10 Conference (TENCON) - Kochi, India (2019.10.17-2019.10.20)] TENCON 2019 - 2019 IEEE Region 10 Conference (TENCON) - Dispersion Behavior of Fundamental Supermodes in Homogeneous Strongly Coupled Multicore Optical Fibers for Different Core Counts and Layouts
摘要： In this paper, dispersion behavior of fundamental supermode in homogeneous strongly-coupled multicore fibers (SC-MCFs) have been investigated using the finite element method based simulation platform and MATLAB. Further, to observe the impacts of core count and core layout on the dispersion behavior of fundamental supermode, the core count and layout dependent dispersion behavior have been investigated. The different core layouts considered are namely, linear, triangular, square, rectangular, square lattice structure (SLS), circular and hexagonal one ring structure (ORS) and circular dual ring structure (DRS), while the different core counts are 3-Core, 4-Core, 6-Core, and 12-Core. It has been observed that the core layouts of homogeneous SC-MCFs with the closely packed structures for the different core counts have the lowest value of D(λ) (magnitude of maximum dispersion), as compared to the other layouts. Moreover, it has been observed that in some of the core layouts, such as 4-Core square, 6-Core circular, and 12-Core circular DRS, the dispersion behaviors are nearly flat over a certain wavelength range, which is desirable for the high speed DWDM applications. Therefore, the analysis presented in this paper may be useful for the selection of core layouts in homogeneous SC-MCF with significantly low dispersion level or the flattened dispersion behavior.
关键词： dispersion,core count,Multicore optical fiber,strongly coupled,core layout,homogeneous,supermodes
更新于2025-09-12 10:27:22
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Thermal Effects on Modal Properties of Dual-Core Yb-Doped Fibers
摘要： The impact of thermo-optic refractive-index changes arising from the core heat load in a dual-core fiber amplifier is studied through finite-element based numerical simulations. Trends in coupling lengths, effective area, core overlaps of fundamental and higher-order supermodes, effects of asymmetric heat loads, and thermo-optic mode coupling parameters are quantified. It is concluded that the coupling between cores is only moderately altered by the overall heat load, but can be strongly sensitive to asymmetric loads. The influence of the core coupling strength is demonstrated to be very important on the supermode effective area, besides the shrinking due to thermal effects. While the thermo-optic index perturbations can lead to guidance of higher-order supermodes, it seems realistic to maintain single-mode operation through gain suppression of the higher-order modes. On the other hand, thermo-optic couplings between fundamental supermodes are found to be quite strong.
关键词： dual-core fiber,fiber amplifier,supermodes,thermo-optic,thermal effects
更新于2025-09-04 15:30:14