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Theoretical characterization of multilayer photonic crystals having a 2D periodicity

✍ Scribed by Roberto Diana; Agostino Giorgio; Anna Gina Perri

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
479 KB
Volume
18
Category
Article
ISSN
0894-3370

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✦ Synopsis

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.

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