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Chapitre D'ouvrage Année : 2016

ADVANCES IN IMAGING AND ELECTRON PHYSICS

Kofi Edee
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Brahim Guizal
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Résumé

The purpose of this chapter is to present a unified theory for the numerical implementation of modal methods for the analysis of electromagnetic phenomena with specific boundary conditions. All the fundamental concepts that form the basis of our study will be detailed. In plasmonics and photonics in general, solving Maxwell equations involving irregular functions is common. For example, when the relative permittivity is a piecewise constant function describing a dielectric–metal interface, the eigenmodes of the propagation equation are solutions of Maxwell's equations subject to specific boundary conditions at the interfaces between homogenous media. Prior knowledge about the eigenmodes allows one to define more appropriate expansion functions, and the rate of convergence of the numerical scheme will depend on the choice of these functions. In this chapter, we present and explain, a unified numerical formalism that allows one to build, from a set of subsectional functions defined on a set of subintervals, expansion functions defined on a global domain by enforcing certain stresses deduced from electromagnetic field properties. Then numerical modal analysis of a plasmonic device, such as a ring resonator, is presented as an example of an application.
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Dates et versions

hal-01625151 , version 1 (27-10-2017)

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Kofi Edee, Jean-Pierre Plumey, Brahim Guizal. ADVANCES IN IMAGING AND ELECTRON PHYSICS: Unified Numerical Formalism of Modal Methods in Computational Electromagnetics and the Latest Advances: Applications in Plasmonics. PETER W. HAWKES. ADVANCES IN IMAGING AND ELECTRON PHYSICS, 197, Elsevier Inc., pp.45-103, 2016, ADVANCES IN IMAGING AND ELECTRON PHYSICS, 978-0-12-804811. ⟨10.1016/bs.aiep.2016.08.002⟩. ⟨hal-01625151⟩
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