Premium
Theoretical characterization of multilayer photonic crystals having a 2D periodicity
Author(s) -
Diana Roberto,
Giorgio Agostino,
Gina Perri Anna
Publication year - 2005
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.584
Subject(s) - photonic crystal , grating , harmonics , physics , optics , band gap , refractive index , microwave , bloch wave , photonic bandgap , floquet theory , formalism (music) , optoelectronics , condensed matter physics , quantum mechanics , voltage , nonlinear system , art , musical , visual arts
We present a new, very accurate and fast model of photonic bandgap (PBG) structure characterized by a two‐dimensional (2D) periodic change of the refractive index and finite height, therefore named quasi 3D PBG. The new model is based on the Floquet–Bloch formalism and allows to find all the propagation characteristics including the space harmonics and the total field distribution, the propagation constants, the guided and radiated power and modal loss induced by the 2D grating. A clear explanation of the physical phenomena occurring when a wave propagates inside the 2D periodic structure is presented, including the photonic bandgap formation and the radiation effects. The approach does not require any theoretical approximation, and can be applied to study rigorously any PBG‐based multilayer structures. We have applied the model to investigate several structures for both optical and microwave applications. Copyright © 2005 John Wiley & Sons, Ltd.