S. A. Kapustin – Post-graduate Student,
Department of Physics and Technology of Optical Communication,
Nizhny Novgorod State Technical University n.a. R.E. Alekseev
E-mail: physics@nntu.ru
S. B. Raevskij – Dr.Sc. (Eng.), Professor,
Department of Physics and Technology of Optical Communication,
Nizhny Novgorod State Technical University n.a. R.E. Alekseev
L. G. Rudoyasova – Ph.D. (Eng.), Associate Professor,
Department of Physics and Technology of Optical Communication,
Nizhny Novgorod State Technical University n.a. R.E. Alekseev