Affiliation: | 1.ITMO University, 197101, St. Petersburg, Russia ;2.St. Petersburg State Electrotechnical University “LETI,”, 197376, St. Petersburg, Russia ;3.Joint Research Center “Materials Science and Characterization in Advanced Technology,” Ioffe Institute, 194021, St. Petersburg, Russia ;4.Connector Optics LLC, 194292, St. Petersburg, Russia ; |