Journal ArticleDOI
Diffraction analysis of dielectric surface-relief gratings
M. G. Moharam,Thomas K. Gaylord +1 more
TLDR
In this article, a dielectric surface-relief grating is analyzed using rigorous coupled-wave theory and the analysis applies to arbitrary grating profiles, groove depths, angles of incidence, and wavelengths.Abstract:
Diffraction by a dielectric surface-relief grating is analyzed using rigorous coupled-wave theory. The analysis applies to arbitrary grating profiles, groove depths, angles of incidence, and wavelengths. Example results for a wide range of groove depths are presented for sinusoidal, square-wave, triangular, and sawtooth gratings. Diffraction efficiencies obtained from the present method of analysis are compared with previously published numerical results. To obtain large diffraction efficiencies (greater than 85%) for gratings with typical substrate permittivities, it is shown that the grating profile should possess even symmetry.read more
Citations
More filters
Journal ArticleDOI
Applied validity of effortless method for design of sinusoidal surface microstructure
TL;DR: In this paper, the authors used scalar diffraction theory and effective medium theory to predict transmittance of the optical elements when the normalized period is more than three wavelengths of incident light within the error less than 5% at normal incidence.
Proceedings ArticleDOI
Compound period grating coupler for double beams generation and steering
Dachuan Wu,Wei Guo,Yasha Yi +2 more
TL;DR: In this paper, a compound period grating coupler was proposed by combining two component periods together to generate two outcoupling beams simultaneously, and the two beams both response to the wavelength tuning, and thus approximately double the steering range.
A feasibility study to determine and verify the effective permittivities of a subwavelength metallic periodic structure
Seyoung Moon,Donghyun Kim +1 more
TL;DR: In this paper, an effective medium theory (EMT) was proposed to estimate the optical characteristics of periodically structured devices by analytically obtaining an approximate effective index of a periodic structure.
Journal ArticleDOI
Optical Response to Submicron Digital Elements Simulated by FDTD Wavelets with Refractive Impulse
TL;DR: In this article, the authors used finite difference time domain (FDTD) results that are phase analyzed as sources for Huygens wavelets on fine scales much shorter than the wavelength used.
Proceedings ArticleDOI
Characterization of inhomogeneous samples by spectroscopic Mueller polarimetry
Martin Foldyna,A. De Martino,Razvigor Ossikovski,Enric Garcia-Caurel,Denis Cattelan,Christophe Licitra +5 more
TL;DR: In this paper, the authors studied the case of small grating boxes surrounded by bare silicon, in conditions where both the gratings and the substrate were illuminated by the Mueller polarimeter beam.
References
More filters
Journal ArticleDOI
Rigorous coupled-wave analysis of planar-grating diffraction
M. G. Moharam,Thomas K. Gaylord +1 more
TL;DR: In this article, a rigorous coupled-wave approach is used to analyze diffraction by general planar gratings bounded by two different media, and the analysis is based on a state-variables representation and results in a unifying, easily computer-implementable matrix formulation.
Journal ArticleDOI
Theory of Periodic Dielect Waveguides
TL;DR: In this paper, the propagation of electromagnetic waves along open periodic, dielectric waveguides is formulated as a rigorous and exact boundary-value problem, and the characteristic field solutions are shown to be of the surface-wave or leaky-wave type, depending on the ratio of periodicity to wavelength (d/lambda).
Journal ArticleDOI
Analysis and Design of Grating Couplers
Theodor Tamir,S. T. Peng +1 more
TL;DR: In this paper, simple design criteria for grating couplers which transfer the energy of a beam into or out of an optical waveguide are developed based on an accurate perturbation analysis of the guiding properties of dielectric gratings.
Journal ArticleDOI
Rigorous diffraction theory for transmission phase gratings with deep rectangular grooves
TL;DR: In this article, the diffraction of light by deep rectangular-groove transmission phase gratings is treated by solving Maxwell's equations numerically, and results are given for the light diffracted into the zero order by gratings with grating constants d in the range λ < d < 5λ, aspect ratio b (= linewidth/d), 0 < b < 1, and grating depths a < 5 λ, assuming a refractive index n 0 = 1.
Journal ArticleDOI
Analysis of grating-coupled radiation in GaAs:GaAlAs lasers and waveguides - I
TL;DR: In this paper, a general formulation for arbitrary-shaped gratings which need not be small in size was developed for radiated power from traveling waves as a function of grating tooth height, tooth width, refractive index, waveguide thickness, and period.