Proceedings PaperDifferential Interferometry In Studies Of Multi-Core Glass Fibres
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In the study, the value of the transverse interferometric method in determining the refractive profile of a four-core optical fibre*) with a two-layer core situated on the fibre axis was demonstrated. By means of the transverse interference method, using differential interference contrast with a fringe interference field, the refractive profile of the fibre was determined for a wavelength λ= 546 nm. For the interference measurements a shearing type microinterferometr - the Biolar PI microscope - was used.