1. Faculty of Electronics, Saint Petersburg Electrotechnical University “LETI”, Saint Petersburg 197022, Russia
2. Saint Petersburg Marine Technical University, Saint Petersburg 198303, Russia
3. A.F. Ioffe Physical-Technical Institute of the Russian Academy of Sciences, Saint Petersburg 194021, Russia
4. Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus