DOI: https://doi.org/10.22184/1993-8578.2023.16.7-8.456.461

This paper presents the results of the study of the influence of geometrical design parameters of an integrated-optical (IO) polarization converter, realized based on a comb waveguide structure on silicon nitride on insulator (SNOI), on the polarization rotation efficiency and output optical power of the device. As a result, a mathematical model of an IO polarization converter with polarization rotation efficiency >96 % and output power >98 % was developed. The design of the polarization converter IO with a mirror-reflected polarization rotation section was also proposed, which allows reducing the influence of technological error of the device geometry reproducibility to ±215 nm.