Tunable narrowband optical filters using superconductor/dielectric generalized Thue-Morse photonic crystals
Sign Up to like & getrecommendations! Published in 2019 at "Microelectronic Engineering"
DOI: 10.1016/j.mee.2019.04.016
Abstract: Abstract A narrowband tunable transmission optical filters according to hybrid dielectric/ superconductor quasi-photonic structures are designed using the transfer-matrix method (TMM) and The two-fluid model. The structure layers are arranged using Generalized Thue-Morse (GTM) sequence… read more here.
Keywords: optical filters; photonic band; superconductor; morse ... See more keywords
Novel optical filters based on curved grating structure
Sign Up to like & getrecommendations! Published in 2017 at "Optics Communications"
DOI: 10.1016/j.optcom.2016.11.035
Abstract: Abstract A novel modified Rowland grating structure is proposed in this paper. Optical filters with the proposed structure are designed and fabricated with both high input and output angles. The passband width, coupling loss of… read more here.
Keywords: based curved; filters based; grating structure; structure ... See more keywords
Silicon waveguide as virtual photonic bandgap structure array for realizing compact optical filters
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Electromagnetic Waves and Applications"
DOI: 10.1080/09205071.2020.1839568
Abstract: ABSTRACT An engineered silicon rib waveguide on Silicon-On-Insulator platform which can act as virtual photonic bandgap structure is proposed. Selective periodic etching of materials from a rib waveguide is done to create a periodic rib-ridge… read more here.
Keywords: virtual photonic; structure; photonic bandgap; optical filters ... See more keywords
Features of the Spectral Characteristics of Narrow-Band Optical Filters with Oblique Incidence of the Radiation Beam
Sign Up to like & getrecommendations! Published in 2019 at "Technical Physics Letters"
DOI: 10.1134/s1063785019050122
Abstract: The performance of narrow-band optical filters on the basis of frustrated total internal reflection was analyzed taking into account the Gaussian distribution of the angle of radiation incidence. The spectral characteristics of these optical filters… read more here.
Keywords: optical filters; spectral characteristics; radiation; narrow band ... See more keywords
Performance analysis of waveguide-mode resonant optical filters with stochastic design parameters.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.003106
Abstract: The performance of optical filters with resonant waveguide gratings is investigated numerically in a stochastic context, assuming random fluctuations of various design variables. Specifically, we derive stochastic models based on polynomial chaos expansions, whose involved… read more here.
Keywords: performance analysis; analysis; design parameters; optical filters ... See more keywords
Angle- and polarization-independent mid-infrared narrowband optical filters using dense arrays of resonant cavities.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.037481
Abstract: We report design and experimental verification of narrowband mid-infrared optical filters with transmission characteristics that are practically constant over a wide range of incident angles. The filter employs a dense array of dielectric resonant cavities… read more here.
Keywords: angle polarization; polarization independent; resonant cavities; mid infrared ... See more keywords
Narrow-band tunable optical filters based on cascaded Fabry-Perot cavities.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.456069
Abstract: Narrow-band tunable optical filters (TOF) based on three cascaded Fabry-Perot (FP) cavities are demonstrated. The FP cavities are fabricated with Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT), which is a transparent electro-optic ceramic. With a reflective design, the optical signal… read more here.
Keywords: fabry perot; cascaded fabry; narrow band; optical filters ... See more keywords
SNAP microwave optical filters.
Sign Up to like & getrecommendations! Published in 2021 at "Optics letters"
DOI: 10.1364/ol.433077
Abstract: If the originally flat bottom of a wide quantum well with multiple eigenstates is periodically modulated, its eigenvalues rearrange into denser groups separated by wider gaps. We show that this effect, if implemented in an… read more here.
Keywords: microwave optical; snap microwave; optical filters;
Better magneto-optical filters with cascaded vapor cells.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.459291
Abstract: Single-cell magneto-optical Faraday filters find great utility and are realized with either "wing" or "line center" spectral profiles. We show that cascading a second cell with independent axial (Faraday) or transverse (Voigt) magnetic field leads… read more here.
Keywords: magneto optical; vapor cells; better magneto; filters cascaded ... See more keywords
Electrostatically Tuned Optical Filters Based on Hybrid Plasmonic-Dielectric Thin Films for Hyperspectral Imaging
Sign Up to like & getrecommendations! Published in 2021 at "Micromachines"
DOI: 10.3390/mi12070767
Abstract: Hyperspectral imaging has a wide range of uses, from medical diagnostics to crop monitoring; however, conventional hyperspectral imaging systems are relatively slow, bulky, and rather costly. In this paper, we present an inexpensive, compact tunable… read more here.
Keywords: filters based; hyperspectral imaging; optical filters; electrostatically tuned ... See more keywords
Optical Filters Based on Cholesteric, Blue and Sphere Mesophases
Sign Up to like & getrecommendations! Published in 2022 at "Polymers"
DOI: 10.3390/polym14224898
Abstract: An optical filter is one of the indispensable devices in massive and high-speed communication, optical signal processing, and display. Twist-structure liquid crystals, cholesteric liquid crystals, blue-phase liquid crystals, and sphere-phase liquid crystals show potential application… read more here.
Keywords: cholesteric blue; filters based; liquid crystals; based cholesteric ... See more keywords