We present a multicore fiber dedicated for next generation transmission systems. To overcome the issue of multicore fibers' integration with existing transmission systems, the fiber is designed in such a way that the transmission parameters for each core (i.e., chromatic dispersion, attenuation, bending loss, etc.) are in total accordance with the obligatory standards for telecommunication single core fibers (i.e., ITU-T G.652 and G.657). We show the results of numerical investigations and measurements carried out for the fabricated fiber, which confirm low core-to-core crosstalk and compatibility with standard single-core single-mode transmission links making the fiber ready for implementation in the near future.
In the present study, the inuence of Al and Ga admixture on the lattice parameters and the Curie point TC of the La(Fe, Co, Si)13 compound was discussed. The measurements were carried out on ribbon samples of LaFe11.0Co0.8Si1.2, LaFe11.0Co0.8(Si0.4Al0.6)1.2 and LaFe11.0Co0.8Si1.1Ga0.1 alloys. The samples were subjected to annealing in the inert gas atmosphere at 1323 K for 24 h. The change of lattice parameters a with admixture of Al and Ga was determined from the X-ray diraction analysis. Furthermore, changes of the Curie point with the alloy composition were observed.
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