B. A. Abubakirov - Leading Engineer, Institute of Electronic Measurements KVARZ A. E. L-vov - Ph.D. (Eng.), Senior Research Scientist, Head of Department of Institute of Electronic Measurements KVARZ S. V. Pankov - Head of Sector of Institute of Electronic Measurements KVARZ G. I. Shishkov - Ph.D. (Eng.), Professor, Department of Physics and Technology of Optical Communication, Nizhny Novgorod State Technical University n.a. R.E. Alekseev V. V. Shcherbakov - Ph.D. (Eng.), Associate Professor, Department of Physics and Technology of Optical Communication, Nizhny Novgorod State Technical University n.a. R.E. Alekseev. E-mail: physics@nntu.nnov.ru