Quasi-Vector Model of Propagation of Polarized Light in a Thin-Film Waveguide Lens
1 Peoples’ Friendship University of Russia (RUDN University), 117198, Moscow, Russia
2 Joint Institute for Nuclear Research, 141980, Dubna, Moscow region, Russia
* e-mail: firstname.lastname@example.org
Published online: 14 February 2018
Maxwell equations describe the propagation with diffraction of waveguide modes through a thin-film waveguide lens. If the radius of the thin-film lens is large, then the thickness of the lens varies slowly in the yz plane. For this case we propose the model, which is based on the assumption of a small change in the electromagnetic field in a direction y. Under this assumption the vector diffraction problem is reduced to a number of scalar diffraction problems. The solutions demonstrate the vector nature of the electromagnetic field, which allows us to call the proposed model a quasi-vector model.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).