Okayama, H.; Onawa, Y.; Shimura, D.; Takahashi, H.; Yaegashi, H.; Sasaki, H.: 'Wavelength filter using twin one-dimensional photonic crystal cavity silicon waveguides', Electronics Letters, 2019, 55, (2), p. 107-109, DOI: 10.1049/el.2018.7469
IET Digital Library, https://digital-library.theiet.org/;jsessionid=3s2an8aj5a7f1.x-iet-live-01content/journals/10.1049/el.2018.7469