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Differential interferometry in planar waveguide structures with ferronematic layer

Author(s): Cuma Tyszkiewicz | Tadeusz Pustelny

Journal: Optica Applicata
ISSN 0078-5466

Volume: 34;
Issue: 4;
Start page: 507;
Date: 2004;
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Keywords: differential interferometry | planar optics | ferronematic liquid crystals | magnetooptic effects

The paper presents a differential interferometry phenomenon 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 which covers 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.

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