Design of a thin-film waveguide Luneburg lens within the framework of the asymptotic model of electromagnetic radiation
Danila A. Starikov1,2, Dmitriy V. Divakov,2; 1Joint Institute for Nuclear Research, Dudna, Russia; 2Peoples’ Friendship University of Russia, Moscow, Russia
Abstract
This work is devoted to designing thin-film waveguide Luneburg lens in the zeroth approximation of the asymptotic model of electromagnetic radiation assuming approximate "horizontal" boundary conditions.
Thin-film waveguide Luneburg lens is a four-layer waveguide consisting of a three-layer planar waveguide and a fourth layer with variable thickness placed on top. Variable thickness of the top waveguide layer leads the change to phase deceleration coefficient of the waveguide mode. In this case, the phase deceleration coefficient plays the role of the effective refractive index.
The works proposes and implements a numerical algorithm for calculating the variable thickness of the waveguide layer with error control based on the given approximate values of the effective refractive index.
Speaker
Danila A. Starikov
Joint Institute for Nuclear Research; Peoples’ Friendship University of Russia
Russia
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