My research interests consist of polarization effects in nano-optics, spin-orbit interaction and angular momentum of propagating light and of surface waves. I did a research on geometric Berry phases in optics, investigated optical effects induced by an interaction of light with space-variant subwavelength gratings and explored surface-plasmon polariton (SPP) based spin-orbit interaction on spatially inhomogeneous surface corrugations. The effects, such as the plasmonic angular Doppler effect, Aharonov-Bohm effect and the optical spin-Hall effect were experimentally and theoretically studied.