Modelling Leaky Waves in Planar Dielectric Waveguides Edik Ayryan, Dmitry Divakov, Alexandre Egorov, Konstantin Lovetskiy and Leonid Sevastianov EPJ Web Conf., 226 (2020) 02003 Published online: 20 January 2020 DOI: 10.1051/epjconf/202022602003