title: Polarization-independent guided-mode resonance filter with cross-integrated waveguide resonators.
abstract: A cavity-resonator-integrated guided-mode resonance filter (CRIGF) has been proposed and investigated in order to realize high-efficiency narrowband reflection with a small aperture. The CRIGF consists of a grating coupler integrated in a cavity resonator constructed by a pair of distributed Bragg reflectors on a thin-film waveguide. This time, orthogonally crossed integration of two CRIGFs was demonstrated in order to obtain polarization-independent reflection spectrum. An SiO2-based device with 10 μm aperture was designed and fabricated for around 850 nm wavelength operation, and narrowband polarization-independent reflection was confirmed experimentally.
authors.affiliation: National Institute of Advanced Industrial Science and Technology, Ikeda, Osaka, Japan. kintaka.kenji@aist.go.jp
authors.forename: Kenji
authors.initials: K
authors.lastname: Kintaka
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Majima
authors.forename: Koji
authors.initials: K
authors.lastname: Hatanaka
authors.forename: Junichi
authors.initials: J
authors.lastname: Inoue
authors.forename: Shogo
authors.initials: S
authors.lastname: Ura