In order to realize the regime of strong coupling between Bloch modes of periodically structured dielectric and
surface plasmon polariton modes of corrugated metal film we prepared 2-dimensional slab hybrid plasmonicphotonic
crystals. Angle-resolved transmission/reflectance spectroscopy was used to assess the composition of
guided modes in such hybrid crystals. In the case of a monolayer photonic crystal encapsulated in a plasmonic
waveguide we achieved the splitting of major resonances, which was interpreted in terms of mode hybridization and
controlling the spatial localization of modes.