Modal analysis of a super-elliptical Bragg waveguide with a small number of periodic cladding layers based on a very simple analytical technology

AbstractIn this paper, the dispersion characteristics of a plasma filled elliptical Bragg waveguide is investigated. The modal characteristic equations of the proposed Bragg waveguide for both ω > ωp and ω < ωp are derived. The effects of plasma frequency, numbers of cladding layers and the eccentricity of elliptical Bragg waveguide on the dispersion characteristics are studied. The analysis shows that the introduction of plasma in the proposed waveguide allows to control the propagation of modes.

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Modal analysis of separate-confinement heterojunction lasers with inhomogeneous cladding layers

Optics Letters ◽

10.1364/ol.8.000283 ◽

1983 ◽

Vol 8 (5) ◽

pp. 283 ◽

Cited By ~ 11

Author(s):

W. Streifer ◽

R. D. Burnham ◽

D. R. Scifres

Keyword(s):

Modal Analysis ◽

Cladding Layers

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Modal analysis of dielectric-sleeve-loaded circular waveguide for dual-mode radiator applications

IEE Proceedings H Microwaves Antennas and Propagation ◽

10.1049/ip-h-2.1987.0072 ◽

1987 ◽

Vol 134 (4) ◽

pp. 369 ◽

Cited By ~ 3

Author(s):

M.S. Leong ◽

P.S. Kooi ◽

S.P. Yeo

Keyword(s):

Modal Analysis ◽

Circular Waveguide ◽

Dual Mode ◽

Dielectric Sleeve

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Modal Analysis of Turbulent Flow near an Inclined Bank–Longitudinal Structure Junction

Journal of Hydraulic Engineering ◽

10.1061/(asce)hy.1943-7900.0001856 ◽

2021 ◽

Vol 147 (3) ◽

pp. 04020100

Author(s):

Nasser Heydari ◽

Panayiotis Diplas ◽

J. Nathan Kutz ◽

Soheil Sadeghi Eshkevari

Keyword(s):

Turbulent Flow ◽

Modal Analysis ◽

Longitudinal Structure

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Optically Detected Magnetic Resonance and Double Beam Photoluminescence of CdS/HgS/CdS Nanoparticles

MRS Proceedings ◽

10.1557/proc-536-257 ◽

1998 ◽

Vol 536 ◽

Author(s):

H. Porteanu ◽

A. Glozman ◽

E. Lifshitz ◽

A. Eychmüller ◽

H. Weller

Keyword(s):

Optical Properties ◽

Magnetic Resonance ◽

Cds Nanoparticles ◽

Electron Hole ◽

Cladding Layer ◽

Double Beam ◽

Optically Detected Magnetic Resonance ◽

Optically Detected ◽

Cladding Layers ◽

Hole Recombination

AbstractCdS/HgS/CdS nanoparticles consist of a CdS core, epitaxially covered by one or two monolayers of HgS and additional cladding layers of CdS. The present paper describes our efforts to identify the influence of CdS/HgS/CdS interfaces on the localization of the photogenerated carriers deduced from the magneto-optical properties of the materials. These were investigated by the utilization of optically detected magnetic resonance (ODMR) and double-beam photoluminescence spectroscopy. A photoluminescence (PL) spectrum of the studied material, consists of a dominant exciton located at the HgS layer, and additional non-excitonic band, presumably corresponding to the recombination of trapped carriers at the interface. The latter band can be attenuated using an additional red excitation. The ODMR measurements show the existence of two kinds of electron-hole recombination. These electron-hole pairs maybe trapped either at a twin packing of a CdS/HgS interface, or at an edge dislocation of an epitaxial HgS or a CdS cladding layer.

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Effect of Bass Bar Tension on Modal Parameters of a Violin's Top Plate

Archives of Acoustics ◽

10.2478/aoa-2014-0015 ◽

2015 ◽

Vol 39 (1) ◽

pp. 145-149 ◽

Cited By ~ 3

Author(s):

Ewa B. Skrodzka ◽

Bogumił B.J. Linde ◽

Antoni Krupa

Keyword(s):

Modal Analysis ◽

Experimental Modal Analysis ◽

Mode Shapes ◽

Modal Parameters ◽

Normal Value ◽

Modal Damping

Abstract Experimental modal analysis of a violin with three different tensions of a bass bar has been performed. The bass bar tension is the only intentionally introduced modification of the instrument. The aim of the study was to find differences and similarities between top plate modal parameters determined by a bass bar perfectly fitting the shape of the top plate, the bass bar with a tension usually applied by luthiers (normal), and the tension higher than the normal value. In the modal analysis four signature modes are taken into account. Bass bar tension does not change the sequence of mode shapes. Changes in modal damping are insignificant. An increase in bass bar tension causes an increase in modal frequencies A0 and B(1+) and does not change the frequencies of modes CBR and B(1-).

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