Attenuation planar waveguides with an absorbing cover*

Abstract
The paper summarizes the experimental work carried out so far, involving investigations on the influence of the absorption of the planar waveguide cover on the attenuation of the guided modes - a phenomenon being a fundamental element of the functioning of optic sensors based on the effect of the absorption change of the cover. Theoretical fundamentals of this phenomenon have been discussed, a new measurement method has been presented.