Yamada, M.; Aozasa, S.; Ono, H.: 'Broadband ASE light source for 1800 nm wavelength region', Electronics Letters, 2012, 48, (23), p. 1489-1490, DOI: 10.1049/el.2012.2850
IET Digital Library, https://digital-library.theiet.org/;jsessionid=3hvr6djlu200i.x-iet-live-01content/journals/10.1049/el.2012.2850