Numerical simulation of an arbitrarily ended asymmetrical slab waveguide by guided-mode extracted integral equations

2002 ◽  
Vol 19 (8) ◽  
pp. 1649 ◽  
Author(s):  
Dao Ngoc Chien ◽  
Masahiro Tanaka ◽  
Kazuo Tanaka
Keyword(s):  
Numerical Simulation ◽  
Integral Equations ◽  
Slab Waveguide ◽  
Guided Mode

scholarly journals Polarization-independent all-dielectric guided-mode resonance filter according to binary grating and slab waveguide dimensions

2021 ◽  
Author(s):  
Hyeon Sang Bark ◽  
in hyung baek ◽  
GEONG RYUL KIM ◽  
Young Uk Jeong ◽  
Kyuha Jang ◽  
...  
Keyword(s):  
Slab Waveguide ◽  
Guided Mode ◽  
Guided Mode Resonance ◽  
Binary Grating ◽  
Polarization Independent

scholarly journals Dynamic near-field microwave diagnostics of lungs.

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
L.A. Bokeria ◽  
◽  
T.T. Kakuchaya ◽  
A.M. Kuular ◽  
Ye.S. Maksimovitch ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Inverse Problems ◽  
Integral Equations ◽  
Near Field ◽  
Experimental Studies ◽  
Heart Activity ◽  
Blood Content ◽  
Air Content ◽  
Microwave Diagnostics ◽  
Biomedical Diagnostics

Results of theoretical and experimental studies of the method of the near-field microwave tomography of the thorax are presented. Integral equations of inverse tomography problem of 3D blood- and air content inhomogeneities by data of multisensory measurements are obtained. Methods of air and blood content profiling in processes of breathing and heart activity by data of bistatic measurements of the scattered signal are proposed and solving algorithms of inverse problems are studied in the numerical simulation. Multifrequency and pulse measurements of scattered signals are carried out in processes of cardiorespiratory activity. By data of bistatic measurements of scattered signals parameters from the thorax, profiling relative air- and blood content profiles has been realized. Application possibilities of the method in the biomedical diagnostics are considered.

scholarly journals SPECIFICS OF FORMING OF STRESS BEHAVIOR OF CONTAINING BLOCK OF UNDERGROUND CONSTRUCTIONS OF HYDROTECHNICAL COMPLEX IN PROCESS OF ITS ERACTION

2019 ◽  
Vol 2 (4) ◽  
pp. 20-25
Author(s):  
Lidiya Gakhova
Keyword(s):  
Numerical Simulation ◽  
Power Plant ◽  
Integral Equations ◽  
Cross Section ◽  
Hydro Power ◽  
Strain Behavior ◽  
Stress Behavior ◽  
Full Cross Section ◽  
Finite Integral ◽  
Underground Constructions

On the results of numerical simulation of stress-strain behavior of containing block near machinery hall and transformer room of Rogunskaya Hydro Power Plant carried out using method of finite integral equations for model of linear deformable quasi-isotropic surrounding of laminated rock solid the character, regularities and specifics of stress behavior distribution of containing block are established. The estimation of impact of gradual revelation of full cross section of machinery hall on changing of elastic convergence “machinery hall bottom – cope” and forming of nonelastic deformation zones near its contour is given.

scholarly journals Differentiation of Optical Signals with Dielectric Ridges on Top of a Slab Waveguide

Vestnik RFFI ◽  
2019 ◽  
pp. 35-45
Author(s):  
Victor A. Soifer ◽  
Nikita V. Golovastikov ◽  
Leonid L. Doskolovich ◽  
Evgeni A. Bezus ◽  
Dmitry A. Bykov
Keyword(s):  
Numerical Simulation ◽  
Oblique Incidence ◽  
Spatial Differentiation ◽  
Slab Waveguide ◽  
High Quality ◽  
Optical Signals ◽  
Quality Differentiation ◽  
Analog Computing ◽  
Planar Structures ◽  
Simulation Results

We propose two simple planar structures that enable spatial differentiation of the profile of optical beams propagating in a slab waveguide. The differentiator operating in transmission consists of a single subwavelength dielectric ridge on the surface of a slab waveguide. The differentiator operating in reflection consists of two grooves on the surface of a slab waveguide. In both cases the differentiation is performed at oblique incidence of the beam and is associated with the resonant excitation of the considered structures eigenmodes localized at the ridge or at the ridge between two grooves. It is shown that the required balance between the differentiation quality and the amplitude of the differentiated beam can be achieved by manipulating the quality factor of the resonance. The presented numerical simulation results demonstrate high-quality differentiation. The proposed differentiator may find application in ultrafast analog computing and signal processing systems.

scholarly journals Optical bistable devices based on guided-mode resonance in slab waveguide gratings

2009 ◽  
Vol 17 (26) ◽  
pp. 23459 ◽  
Author(s):  
Quang Minh Ngo ◽  
Sangin Kim ◽  
Seok Ho Song ◽  
Robert Magnusson
Keyword(s):  
Slab Waveguide ◽  
Guided Mode ◽  
Guided Mode Resonance ◽  
Waveguide Gratings
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