[PDF] Top 20 Tunable photonic structures based on silicon and liquid crystals

... approach based on both aforementioned methods for the design and analysis of optical properties of 1D ...periodic structures with an infinite number of periods, m and for one predicted filling ...contrast ... See full document

... Silicon-based photonic bandgap (PBG) structures have received much attention in the research community as an established technology for fabricating high-performance optical elements 1-5 ...the ... See full document

... waveguide structures [6], in ring resonators [7], which can be tuned by injecting carriers with Δn <10 -4 , so they have a relatively small tunable ...of liquid crystals with a large range ... See full document

... thermochromic liquid crystals used in thermography are similar to those of rugate porous silicon, having narrow reflectance peaks with width 30 to 40 nm ...Thermochromic liquid crystal ... See full document

... with liquid crystals (LC) tunable terahertz absorber exploits the critical coupling between periodically arranged patch resonators and external field as discussed by ...with silicon (Si) ...of ... See full document

... (3D) photonic crystal with complete band gap is ...3D silicon-based photonic crystals with 3D complete band gap, such as double-angled reactive ion etching [12], macropore formation in ... See full document

... a Silicon-On-Insulator (SOI) ...a silicon device layer thickness of ...nano-scale structures with a lattice constant of 1600 nm and a Si wall thickness of 1040 ...PhC structures were selected ... See full document

... Photonic crystals (PCs) are materials with a regular change in the refractive index, ...atomic crystals, arises for structures with appropriate values of refractive index, symmetry and ...a ... See full document

... anisotropic photonic crystal (PCs) based on holographic polymer-dispersed liquid crystals (HPDLCs) that are fabricated using two-beam interference with various pitch and exposure ... See full document

... engineering, liquid crystal displays, remote sensing, optics and others are the fields where it is crucial to calculate a transmittance, reflectance and absorbance coefficients of the layered structures in a ... See full document

... Prior to the experiment, p-type silicon (100) wafers with resistivity of 0.01–10.0 Ω•cm, were subjected to standard degreasing procedures. These samples were then subjected to varying anodic currents and etch ... See full document

... with liquid [92] or other dielec- tric material ...dispersion-compensated structures: instead of de- signing the waveguide with a flattened dispersion curve, a dispersive slow light waveguide is followed by ... See full document

... For PPC1, if we take the thickness ratio d to be equal to 0.01, we get only one photonic band gap that lies in the normalized frequency range from 1.322 to 1.358 centered at 1.340 with a forbidden band width of ... See full document

... waveguide structures in particular (see Fig. 1). We calculate the photonic dispersion by combining a numerical approach (aperiodic-Fourier Modal Method) and Perturbation Theory, which allows us to examine a ... See full document

... anisotropic crystals but it can be induced artificially for optically isotropic materials by stress, chemical regeneration, dissolving, electric or magnetic inductions and, finally, by re-alignment and spreading ... See full document

... Abstract—Fractal structures have been widely used in many fields of science, such as biology, physics and chemistry. In this article, we analyze the basic properties of a fractal-like square lattice of air holes, ... See full document

... multi-layer structures are available to study photon propagation on disordered structures and light ...Devices based on silicon homo- junction are recently been ...p-Si based ... See full document

... Twisted structures with graded pitches show broad bands in their reflection spectra and metal-like ...dimensional photonic crystal, and the dispersion relation characte- rizing this kind of twisted ... See full document

... Photonic crystals are multidimensional periodic structures. The period is of the order of optical wavelength. They have many similarities to solid state crystals. The most important among them ... See full document

... nematic liquid crystals that can be easily controlled by externally ap- plied ac ...dye-doped liquid crystals proved particularly interesting and beneficial not only for the richness of ... See full document