Photonic crystals (PhC) offer wide opportunities for creation of small-type components, which allow to downsize the existing integrated circuits. The operation of these devises is based on the presence of photonic bandgap. Size and period of photonic crystal determine effective range of wavelength for the concrete functional element. The creation of PhC structures on the basis of functional materials with the characteristics being switched by external electric/magnetic field allow to manage the propagation parameters of electromagnetic field inside them. The majority of research in the sphere of PhC waveguides is based on the modeling of their characteristics. Herewith 2 models are used: model of dielectric channels in air and model of ordered group of holes in functional material. The advantage of the first model waveguides lies in the fact that they are single-mode. The literature also offers variants of calculation of deflecting and bisected waveguides. But such a configuration of the waveguide does not provide the acceptable level of losses for the creation of actually functioning prototypes, working in the optical range. PhC structures, based on the second model are much more diverse and allow to create waveguides of more complicated construction, for example, optical T- and Y-couplers, interferometers and so on. This work presents the result of the systematical research using the method of numerical simulation of transmission spectra for PhC waveguides with different type of ordering and structure parameters. The modeling of the characteristics of 2D PhC structures was carried out with the help of software package . The following parameters were used for modeling: wavelength of 400 – 800 nm, ratio of period of the structure to wavelength 0,24≤a/λ≤ 0,42; ratio of hole diameter to period 0,5 ≤d/a≤ 0,9. Photonic crystals based on silicon and gallium arsenide with quadratic and hexagonal ordering were investigated. BaTiO3 films was investigated because this type of materials are popular when creating integrated circuits. Transmission properties of this films was calculated and measured at 632 nm wavelength and was made a PhC structure with bandgap for the same wavelength. This work is partly supported by Russian Foundation of Basic Research and Russian Ministry of Science and Education.