Abstract

A cavity-resonator-integrated guided-mode resonance filter (CRIGF) consists of a grating coupler (GC) and a pair of distributed-Bragg reflectors (DBRs) on a thin-film dielectric waveguide, and provides a narrowband reflection spectrum for an incident small-diameter beam. A lens-less direct coupling of CRIGF to a single-mode optical fiber is theoretically and experimentally studied. A field-profile matching was discussed with alignment tolerance between CRIGF and the fiber. Design, fabrication, and characterization of CRIGF were described for an operation wavelength of 1540 nm. The aperture size and a nonuniform fill factors of the GC were investigated in order to realize high-efficiency coupling with an incident Gaussian beam of a 10.5-μm diameter. GeO₂:SiO₂ guiding core and Si-N cladding layers were deposited on a SiO₂ glass substrate, and GC and DBRs were formed in the cladding layer by the electron-beam direct writing lithography. The lens-less direct coupling was demonstrated with wavelength selective coupling of the maximum efficiency of 50% and full-width at half-maximum of 1.3 nm.

© 2015 IEEE

Determination of cavity length of cavity-resonator-integrated guided-mode resonance filter

Junichi Inoue, Tomohiro Kondo, Kenji Kintaka, Kenzo Nishio, and Shogo Ura
Opt. Express 23(3) 3020-3026 (2015)

Polarization-independent guided-mode resonance filter with cross-integrated waveguide resonators

Kenji Kintaka, Tatsuya Majima, Koji Hatanaka, Junichi Inoue, and Shogo Ura
Opt. Lett. 37(15) 3264-3266 (2012)

Cavity-resonator-integrated guided-mode resonance filter for aperture miniaturization

Kenji Kintaka, Tatsuya Majima, Junichi Inoue, Koji Hatanaka, Junji Nishii, and Shogo Ura
Opt. Express 20(2) 1444-1449 (2012)

Wavelength division multiplexer based on cavity-resonator-integrated guided-mode resonance filters for a compact multi-wavelength light source

Junichi Inoue, Atsushi Tsuji, Kenji Kintaka, Kenzo Nishio, and Shogo Ura
Opt. Express 26(3) 2212-2219 (2018)

Reflection characteristics of a cavity-resonator-integrated guided-mode resonance mirror for a microdiameter Gaussian beam

Akari Watanabe, Keisuke Ozawa, Shunsuke Teranishi, Aika Taniguchi, Junichi Inoue, Kenji Kintaka, and Shogo Ura
Appl. Opt. 62(13) 3496-3501 (2023)