leaky modes
Leaky modes of a left-handed slab
... materials, leaky modes, complex plane analysis 1 Introduction Left-handed materials [1] have long been considered a theoretical ...guided modes [3,4] or behave as a perfect lens ...of leaky ...
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Finite element computation of leaky modes in straight and helical elastic waveguides
... 1 Introduction For embedded structures, the energy leakage into the surrounding medium yields wave attenuation along the guide axis, which limits the application of guided wave technique for non destructive evaluation ...
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A millimeter-wave Bessel beam launcher through the excitation of higher-order leaky modes
... Abstract—We present a Bessel beam launcher based on a radial leaky-wave antenna operating at millimeter waves. With respect to a design method proposed by one of the Authors in a lower frequency range, a new ...
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Trapped modes and reflectionless modes as eigenfunctions of the same spectral problem
... resonances, sometimes known as leaky modes or quasi normal modes in literature [ 1 , 4 , 32 , 25 , 3 , 34 , 39 , 40 , 27 ]. Complex resonances provide the backbone of phenomena of wave propagation. ...
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Large mode area leaky optical fiber fabricated by MCVD
... multimode excitation is visible. The intensity profile was extremely sensitive to launching conditions and fiber bending. For longer lengths of the fiber, the profiles became smoother and their sensitivity to launching ...
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Birefringence analysis of multilayer leaky cladding optical fibre
... Leaky modes in fibres have always been a matter of interest in designing photonic devices such as bent waveguides [1], depressed inner cladding (DIC) single-mode (SM) fibres [2] and polarizers ...Recently ...
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Higher-Order Leaky-Mode Bessel-Beam Launcher
... For this reason, here we propose a Bessel-beam launcher at millimeter waves using higher-order TM leaky modes. The structure is again based on a radial waveguide loaded by a capacitive sheet. However, in ...
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Advanced radiating systems based on leaky waves and nondiffracting waves
... dominant leaky modes has a null on the ground plane (x = 0) and a minimum at the substrate-superstrate interface (x = h 1 ), these two locations give rise to zero or negligible graphene/SS interaction, ...
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Large-mode-area leaky optical fibre fabricated by MCVD
... Recently, new single mode LMA structures were proposed, which were composed of a multimode core and a structured cladding acting as a modal filter and guiding through total internal reflection of leaky ...
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Birefringence analysis of multilayer leaky cladding optical fibre
... Leaky modes in fibres have always been a matter of interest in designing photonic devices such as bent waveguides [1], depressed inner cladding (DIC) single-mode (SM) fibres [2] and polarizers ...Recently ...
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Additive manufacturing of modulated triple-ridge leaky-wave antenna
... dual-polarized leaky-wave antenna (LWA) suitable for bi-directional communication links at a fixed frequency has been recently proposed by some of the authors ...single leaky-mode ...
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Non-destructive testing of nuclear structures behind screen using leaky lamb waves
... as leaky Lamb ...called leaky attenuation: it has been theorized in the sixties [17] (see FIGURE ...The leaky attenuation coefficient quantifies the ability of the leaky Lamb mode to re-emit ...
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Collective irregular dynamics in balanced networks of leaky integrate-and-fire neurons
... 1 Introduction The use of simple models proves often very helpful to identify and characterize the mechanisms underlying general dynamical phenomena. Computational neuroscience is a field where this approach is ...
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Leaky waveguide deflector for 40 Gs/s all-optical analog-to-digital converters
... the leaky optical waveguide deflection ...The leaky wave is diffracted after propagation through superstrate-prism and is transmitted into the air at output angle of θ o ...
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Collective Lyapunov modes
... collective modes is not determined a ...Lyapunov modes should play central roles in tackling these fundamental issues left hitherto unexplored, which we believe deserve rather high computational cost needed ...
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Optimization Procedure for Planar Leaky-Wave Antennas With Flat-Topped Radiation Patterns
... topped leaky-wave source for phased arrays with reduced scan losses,” Proceedings of the 8th European Conference on Antennas and Propaga- tion (EuCAP), 2014, ...tapered leaky-wave antennas in hy- brid ...
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Prose, poésie, modes de signification et modes de rationalité aux origines de la philosophie.
... construction du mythe de souveraineté dans les cosmogonies mythiques , et la question des modes de rationalité de la période archaïque 7 (je reviens ci-dessous sur ce dernier point). L’introduction situe l’ouvrage ...
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Carbon storage: the economic efficiency of storing CO2 in leaky reservoirs
... Microeconomics of leakage This short review of the literature shows that the leakage rates over 1%/year tend to be on the high side, while leakage rates less than 0.1%/year tend to be acceptable. This section uses a ...
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Computational passive imaging of thermal sources with a leaky chaotic cavity
... In this article, we demonstrate passive imaging of thermal sources in the X-band frequency regime using a leaky chaotic cavity attached to two ports. We reconstruct the distribution of localized and extended ...
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Modes de transfert thermique
... Chapitre IV: Conduction en régime transitoire IV-1 Conduction avec températures limites imposées IV-2 Méthodes numériques différences finies en régime transitoire Exercices corrigés Chap[r] ...
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