Hamaoka, F.; Nakamura, M.; Nagatani, M.; Wakita, H.; Yamazaki, H.; Kobayashi, T.; Nosaka, H.; Miyamoto, Y.: 'Electrical spectrum synthesis technique using digital pre-processing and ultra-broadband electrical bandwidth doubler for high-speed optical transmitter', Electronics Letters, 2018, 54, (24), p. 1390-1391, DOI: 10.1049/el.2018.6216
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1s5fwendjib4l.x-iet-live-01content/journals/10.1049/el.2018.6216