Results 241 to 250 of about 8,118 (290)

Asymptotic solutions of the leaky modes and PML modes in a Pekeris waveguide

open access: yesWave Motion, 2008
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Zhu, Jianxin, Lu, Ya Yan
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Behavioral feature of the space-wave leaky mode, the surface-wave leaky mode and the bound mode

2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017), 2002
We report here our recent discoveries relating to the dispersion behaviors of printed-circuit transmission lines. Such behaviors relate to those of both the bound dominant mode and the space-wave leaky modes propagating at rather low frequencies. The discovered behaviors affect significantly the performance of microwave and millimeter-wave integrated ...
M. Tsuji, H. Shigesawa
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Leaky Modes of Symmetrical Groove Guide

MTT-S International Microwave Symposium Digest, 2005
Both the odd and even higher modes of groove guide, a low-loss waveguide proposed some years ago for millimeter wavelengths and of interest again today, are investigated quantitatively. We verified an early prediction that all the odd higher modes leak, and we find that all even higher modes do also.
A. A. OLINER, LAMPARIELLO, Paolo
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Leaky modes on circular optical waveguides

Applied Optics, 1976
A nonabsorbing optical waveguide of circular cross section supports leaky modes in addition to the well-known bound modes. The detailed properties of these leaky modes are determined by solving the eigenvalue equation for the modes of a circular dielectric cylinder below their cutoff frequency.
R, Sammut, A W, Snyder
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Leaky modes on W-fibers: mode structure and attenuation

Applied Optics, 1977
The mode structure of a W-fiber has been discussed in conjunction with that of an SC-fiber using the WKB approximation, and the leaky mode attenuation coefficient has been derived using Poynting's vector theorem. Furthermore, a simplified expression for the attenuation coefficient of the W-fiber has been obtained and compared with that of the SC-fiber.
M, Maeda, S, Yamada
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Liquid level sensing based on leaky mode attenuation in a guided-mode–leaky-mode–guided-mode fiber structure

Optics Communications, 2014
Abstract A liquid level sensing scheme based on leaky mode attenuation and a corresponding liquid level sensor based on a guided-mode–leaky-mode–guided-mode (GLG) fiber structure are proposed, which aim at the liquid whose refractive index (RI) is higher than that of the silica fiber.
Linlin Xue, Di Che, Li Yang
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Quantized mode of a leaky cavity

Physical Review A, 2000
We use Thomson's classical concept of mode of a leaky cavity to develop a quantum theory of cavity damping. This theory generalizes the conventional system-reservoir theory of high-$Q$ cavity damping to arbitrary Q. The small system now consists of damped oscillators corresponding to the natural modes of the leaky cavity rather than undamped ...
S. M. Dutra, G. Nienhuis
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Effect of periodic strain on the leaky modes in single-mode fiber

Applied Optics, 1988
The effect of periodic strain on the beat wavelength between the guided LP(01) and the leaky LP(11) modes is approximated around the LP(11) mode cutoff. An abrupt change of the beat wavelength as a function of optical wavelength signifies the onset of the cutoff region.
H, Grebel, M, Mezhoudi
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Failure of the leaky-mode representation near the waveguide mode cutoff

Optics Letters, 1995
Improper eigenmodes of the planar waveguide dispersion relation, or leaky modes, are often used to represent the nonbound optical field in planar waveguides. Here we show that the improper leaky solutions give an inadequate description of the nonbound field for the important case of a waveguide just below cutoff.
R E, Smith, S N, Houde-Walter
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Leaky modes on a dielectric waveguide: orthogonality and excitation

Applied Optics, 1976
Because they are not proper spectral modes, leaky modes do not obey the usual power orthogonality relations for an ideal waveguide. Two methods for circumventing this problem are presented in this paper. One approach is to use the fact that weakly leaky modes are approximately power orthogonal within a restricted region of space to define a new set of ...
R, Sammut, A W, Snyder
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