Polarimetric difference interferometer made by ion exchange method*

Abstract
The paper presents investigations on a planar and channel polarimetric interferometer made by ion exchange in glass for sensor applications.The dependence of the difference of propagation constants of orthogonal modes of the same order on the refractive index of the cover, for planar waveguides obtained during the ion exchange K⁺-Na⁺ in the glass BK-7 were determined. Similar measurements have been made for the exchange of Ag⁺-Na⁺, determining also the influence of the heating time on those parameters.