V. A. Malakhov – Dr.Sc. (Eng.), Professor of Department of Physics and Technology of Optical Communication, Nizhny Novgorod State Technical University n.a. R.E. Alekseev

E-mail: physics@nntu.ru

A. A. Nikitin – Post-graduate Student, Department of Physics and Technology of Optical Communication, Nizhny Novgorod State

Technical University n.a. R.E. Alekseev; Engineer, FRPC “Measuring System Research Institute n.a. Yu.Ye. Sedakov”

A. S. Raevskij – Dr.Sc. (Phys.-Math.), Professor, Head of Department of Physics and Technology of Optical Communication, Nizhny Novgorod State Technical University n.a. R.E. Alekseev

The spectrum of the waves of a circular open dielectric waveguide, including the frequency sections corresponding to leaky waves, complex and slow improper waves, has been considered. The power flux density for these waves has been calculated. Analysis of the distribution of the real part of the power flux density along the radial coordinate has been carried out.

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