Buscar
Mostrando ítems 1-10 de 380
The two-impurity Anderson model: An effective medium approach
(2002-03-01)
The two-impurity Anderson model is solved within a effective medium approach. All impurity parameters are modelled via Slater atomic orbitals. Impurity spectral densities and spin correlation functions are readily computed. ...
Thermal tunability of photonic bandgaps in photonic crystal fibers selectively filled with nematic liquid crystal
(2010-12-01)
We address the bandgap effect and the thermo-optical response of high-index liquid crystal (LC) infiltrated in photonic crystal fibers (PCF) and in hybrid photonic crystal fibers (HPCF). The PCF and HPCF consist of solid-core ...
Multilayer Perceptron Models for Band Diagram Prediction in bi-dimensional Photonic Crystals
(2019-01-11)
We modeled Multilayer Perceptron (MLP) Artificial Neural Network for predicting band diagrams (BD) of bi-dimensional photonic crystals. Datasets for MLP training were created by relating geometric and material properties ...
Multilayer Perceptron Models for Band Diagram Prediction in bi-dimensional Photonic Crystals
(Ieee, 2018-01-01)
We modeled Multilayer Perceptron (MLP) Artificial Neural Network for predicting band diagrams (BD) of bi-dimensional photonic crystals. Datasets for MLP training were created by relating geometric and material properties ...
Recent developments in chalcogenide photonic crystal fibres
(2011-09-26)
Elaboration of low-losses highly non linear chalcogenide optical fibers for the generation of efficient non linear effects in the infrared remains a challenge. In recent years, much work has been devoted to the study of ...
Fabrication and analysis of self-assembled photonic crystals structures
(IEEE, 2007-01-01)
This paper presents the fabrication and analysis of a three-dimensional FCC photonic crystal (PhC) based on a self-assembly synthesis of monodispersive latex spheres. Experimental optical characterization, achieved by ...
Nonlinear effects generation in suspended core chalcogenide fibre
(2011-06-15)
In this work we report our achievements in the elaboration and optical characterizations of low-losses suspended core optical fibers elaborated from As2S3 glass. For preforms elaboration, alternatively to other processes ...
Profilometry of semiconductor components by two-colour holography with Bi12TiO20 crystals
(2009-09-14)
We studied the shape measurement of semiconductor components by holography with photorefractive Bi12TiO20 crystal as holographic medium and two diode lasers emitting in the red region as light sources. By properly tuning ...
CRYSTALLIZATION PROCESS AND CHEMICAL DISORDER IN FLASH EVAPORATED AMORPHOUS GALLIUM ANTIMONIDE FILMS
(Materials Research Society, 1994-01-01)
Designing artificial neural networks for band structures computations in photonic crystals
(2019-01-01)
We modeled Multilayer Perceptron and Extreme Learning Machine Artificial Neural Networks (ANNs) for computing band structures (BSTs) and photonic band gaps (PBGs) of 2D and 3D photonic crystals (PhCs). We aim at providing ...