Table of Contents
International Journal of Microwave Science and Technology
Volume 2009 (2009), Article ID 160321, 10 pages
http://dx.doi.org/10.1155/2009/160321
Research Article

Floquet's Unit Cell Design for Periodic Structures at Optical Frequencies

1National Nanotechnology Laboratory of CNR-INFM, Università del Salento, Distretto Tecnologico-ISUFI, Via Arnesano, 73100 Lecce, Italy
2IMM-CNR Sezione Lecce, University Campus, Lecce-Monteroni, 73100 Lecce, Italy

Received 25 March 2009; Accepted 7 July 2009

Academic Editor: Kamya Yekeh Yazdandoost

Copyright © 2009 Alessandro Massaro et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We present a new theoretical approach regarding the design of 2D periodic structure at optical frequencies. The model is based on Floquet's theory and on the variational equivalent circuit. The distributed circuit model is developed through the use of the microwave network theory and the optical theory of the step discontinuities. This approach analyzes 2D dielectric periodic structures with high dielectric contrast by the transmission line model including variational equivalent circuits. The 3D Finite Element Method (FEM) model validates Floquet's design theory of the grating resonance and provides the design optimization of an optical GaAs periodic waveguide.