1. ITMO University Kronverksky prospect 49 St. Petersburg 197101 Russia
2. Institute of Telecommunications Riga Technical University Azenes street 12 Riga 1048 Latvia
3. Institute of Nanotechnology of Microelectronics Russian Academy of Sciences Moscow 119991 Russia
4. Saint Petersburg Electrotechnical University “LETI” (ETU) 5 Prof. Popova Street 197376 St. Petersburg Russia
5. Departamento de Física de Materiales IFIMAC and Instituto “Nicolás Cabrera” Universidad Autónoma de Madrid 28049 Madrid Spain
6. School of Electrical Engineering Tel Aviv University Tel Aviv 69978 Israel
7. Center for Photonics and 2D Materials Moscow Institute of Physics and Technology Dolgoprudny 141700 Russia
8. Kotel'nikov Institute of Radio Engineering and Electronics Russian Academy of Sciences (Ulyanovsk branch) Goncharova Str.48 Ulyanovsk 432000 Russia