Journal ArticleDOI
Guided-mode resonance filters of finite aperture
TLDR
In this article, the authors investigate the properties of finite-aperture waveguide-grating resonance filters by means of rigorous electromagnetic theory and an approximate model, and provide an optical-engineering model for the estimation of the minimum grating size required to achieve a high resonance-wavelength reflectivity.Abstract:
The operation of optical narrowband reflection filters based on resonance anomalies of waveguide gratings is well established for gratings of infinite extent. We investigate the properties of finite-aperture waveguide-grating resonance filters by means of rigorous electromagnetic theory and an approximate model. The rigorous approach illustrates the scattering of optical energy from the guided mode at and near the edges of the element, which leads to a reduced diffraction efficiency into the backward-diffracted zeroth order. The approximate approach provides an optical-engineering model for the estimation of the minimum grating size required to achieve a high resonance-wavelength reflectivity.read more
Citations
More filters
Journal ArticleDOI
Coupled-mode theory of resonant-grating filters
TL;DR: In this paper, an approximate closed-form expression for the loss in a planar phase grating is derived by using coupled-mode theory, which can be used to determine the spectral and angular width of a resonant-grating filter.
Journal ArticleDOI
Controlling the spectral response in guided-mode resonance filter design
TL;DR: Techniques for controlling spectral width are used in conjunction with thin-film techniques in the design of guided-mode resonance filters to provide simultaneous control over line-shape symmetry, sideband levels, and spectral width.
Journal ArticleDOI
Investigation of the effect of finite grating size on the performance of guided-mode resonance filters
Robert R. Boye,Raymond K. Kostuk +1 more
TL;DR: A simple analytical model based on the attenuation properties of the waveguide and a fixed length of the grating aperture is developed, which is in good agreement with experimental filters formed with subwavelength period photoresist gratings and solgel waveguides.
Journal ArticleDOI
Cavity-resonator-integrated guided-mode resonance filter for aperture miniaturization
TL;DR: A guided-mode resonance filter integrated in a waveguide cavity resonator constructed by two distributed Bragg reflectors is designed and fabricated for miniaturization of aperture size.
Patent
Methods for using resonant waveguide-grating filters and sensors
TL;DR: In this paper, a waveguide grating device, contacting the waveguide with a medium, propagating a signal having at least one signal attribute through waveguide, and comparing the modified signal attribute to a known signal attribute is used to detect a parameter of the medium.