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1 2004

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Differential interferometry in planar waveguide structures with ferronematic layer

Tyszkiewicz C., Pustelny T.

Optica Applicata

2004

Vol. 34, nr 4

507-514

The paper presents a differential interferometry phenonenon in a planar optical structure, which uses a ferronematic layer of a liquid crystal. This layer changes propagation conditions for TM modes in external magnetic field. Due to the magnetic field action on a ferronematic layer whichcovers the planar waveguide coated with an additional orientative layer, the ellipsoid of the refractive index changes its orientation in a polarization plane of the TM mode. In consequence, the phase difference of the TM mode occurs under magnetic field influence. This paper provides an analysis of the influence of a thickness and a refractive index of the orientative layer on interference phenomenon in analyzed structure.