Quasi-periodic photonic crystal Fabry–Perot optical filter based on Si/SiO₂ for visible-laser spectral selectivity

Abstract

We report on a 1D quasi-periodic photonic crystal Fabry–Perot optical filter Cs(Si/SiO2)3(SiO2/Si)3 for spectral selectivity of visible light and 1.55 µm laser. A material transparency interval of 1.03–2.06 µm makes Si a unique choice of high refractive index material. Owing to the CIE 1931 standard and equal inclination interference, the designed structure can be successfully fabricated with a certain color (brown, khaki, or blue) corresponding to the different Cs physical thickness d and response R(λ). In addition, the peak transmittance Tmax of the proposed structure can reach as high as 92.56% (Cs = 20 nm), 90.83% (Cs = 40 nm), and 88.85% (Cs = 60 nm) with a relatively narrow full width at half maximum of 4.4, 4.6, and 4.8 nm at 1.55 µm. The as-prepared structure indicates that it is feasible for a photonic crystal Fabry–Perot optical filter to achieve visible-laser (1.55 µm) spectral selectivity.

Optical properties of 1D quasiperiodic structures containing graphene-based hyperbolic metamaterials

“…Quasiperiodic (QP) structures, where they can be defined as an intermediate system between a periodic crystal and the random amorphous solids [1,2], have attracted much attention due to many practical purposes [3][4][5][6][7][8][9]. A one-dimensional (1D) QP structures can be produced by stacking layers according to the substitution rules.…”

Low-Threshold Optical Bistability Based on Photonic Crystal Fabry–Perot Cavity with Three-Dimensional Dirac Semimetal

“…The idea of using photonic crystal structures instead of mirrors in a Fabry-Perot (FP) cavity to fabricate optical devices with resonant modes and tunable characteristics is seeing acceptance. Optical devices based on the PhC FP cavity such as optical absorption devices [13], optical filters [14], slow-light and nonlinear devices [15], multiplexers [16], and optical 1-bit comparator [17,18] have also been reported.…”

Efficient Modulation of Photonic Bandgap and Defect Modes in All‐Dielectric Photonic Crystals by Energetic Ion Beams

“…[ 3,4 ] The wavelength of the defect mode (also named as localized or cavity mode) locates inside the PBG, leading to the filtering effect for the sensing, detection, and communication. Based on these features, PCs have been used to construct a variety of photonic devices, such as omnidirectional reflectors, [ 5–7 ] filters, [ 3,8–10 ] lasers, [ 8,11 ] fibers, [ 12,13 ] optical switches, [ 14–17 ] photonic radiative coolers, [ 18 ] and camouflages. [ 19,20 ]…”