Computer modelling of optoelectronic elements, fiber optics elements and fiber optics communication systems. Electromagnetic waves interaction with nonhomogeneous and nonlinear media, nonlinear optics, laser physics, optoelectronics, fiber optics communication. Theoretical investigation of electromagnetic wave interaction with nonlinear and laser active medium, wave propagation through the multilayer structures and modulated media, laser active elements and photonic communication components computer modelling.