We show the possibility of selective polarization generation in photonic crystal structure with the monolayer of metal nanoparticles. Optical properties of the monolayer are defined by the surface concentration and shape factor of the nanoparticles. Wavelength dependence of the monolayer reflectance and transmittance possesses a resonance behavior resulting from plasmon resonance in nanoparticles. We show that this allows, depending on the relative orientation of the monolayer anisotropy axis and the polarization direction of the light, to achieve the mode discrimination of the photonic structure.This work was supported by the Ministry of Education and Science of the Russian Federation (grant
numbers 14.Z50.31.0015, 3.5698.2017/9.10, 3.8388.2017/ITR) and the Russian Foundation for Basic Research (Projects Nos. 17-02-01382)
