Skip to Main content Skip to Navigation
Theses

Etude théorique et expérimentale des matériaux à bandes interdites photoniques bidimensionnels en micro-onde : application à l'ultraréfraction

Abstract : We study the properties of two-dimensional dielectric and metallic photonic band gap materials at microwaves frequencies. We examine the ultrarefractivity and super prism effects between 6 GHz and 16 GHz. The numerical study is concentrated on finite and infinite two-dimensional structures. In the case of the finite structures we used a finite element software. For the infinite structures we used the the plane wave method. The experimental study is concentrated on the verification of the numerical predictions. We show that a dielectric photonic band gap material behaves like a homogeneous and isotropic medium in the first allowed frequencies band. At the edge of the forbidden band, we obtain the ultrarefractive effect. Then we study the effect of distribution of defects on the ultrarefraction properties in the dielectric structure, and we will show that the surface defects change the trajectory of the electromagnetic wave and allow the excitation of new electromagnetic modes. These properties may lead to an improvement of the antennas output and of the wavelength multiplexers. In the case of a metallic photonic band gap, we show numerically and by experiments that it behaves like a homogeneous medium whose effective index lies between 0 and 1 in its first allowed band. In its forbidden frequency band, we prove that the defects created on surface of metallic structures change the trajectory of electromagnetic wave and allow the excitation of new electromagnetic modes
Document type :
Theses
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-00178075
Contributor : Soumia Massaoudi <>
Submitted on : Wednesday, October 10, 2007 - 10:18:57 AM
Last modification on : Wednesday, September 16, 2020 - 4:56:15 PM
Long-term archiving on: : Sunday, April 11, 2010 - 10:40:27 PM

Identifiers

  • HAL Id : tel-00178075, version 1

Collections

Citation

Soumia Massaoudi. Etude théorique et expérimentale des matériaux à bandes interdites photoniques bidimensionnels en micro-onde : application à l'ultraréfraction. Physique [physics]. Université Paris Sud - Paris XI, 2005. Français. ⟨tel-00178075⟩

Share

Metrics

Record views

347

Files downloads

5747