[22a-D215-1~9] 3.14 Optical control devices and optical fibers

[22a-D215-3] Design of angle insensitive guided-mode-resonance bandpass filter

〇Zhiyu Yang¹, Seita Ishioka¹, Junichi Inoue¹, Kenji Kintaka², Shogo Ura¹ (1.Kyoto Inst. Tech., 2.AIST)

Keywords:guided-mode resonance, bandpass filter, angle insensitive

A waveguide mode resonance filter is configured by integrating a sub-wavelength grating on a transparent substrate and depends on the angle of incident light (incident angle, rotation angle, polarization angle). In this study, we proposed and examined a two-dimensional structure with a doubly periodic grating with 90° rotational symmetry as an angle-insensitive narrow bandpass filter. When the incident angle was within 3°, the transmittance of the design wavelength is 95% or more and FWHM of 9 nm independent of rotation angle and polarization angle by rigorous coupled-wave analysis.