Yu. G. Belov – 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: bel266@nntu.ru

B. I. Voroshilov – Chief Designer on EKB, JSC “FSPC “Nizhny Novgorod Research Institute of Radio Engineering” E-mail: voroshilov_b@nniirt.ru

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: mr.vasmal@mail.ru

I. A. Nefed’ev – Senior Lecturer of Department of Physics and Technology of Optical Communication, Nizhny Novgorod State Technical University n.a. R.E. Alekseev

E-mail: ra3tvj@mail.ru