Technical Papers and Presentations

Ici vous trouverez les présentations issues des Conférences COMSOL à travers le monde. Réalisées par des utilisateurs de COMSOL Multiphysics, ces présentations explorent tous les domaines actuels d'innovation. Les applications couvrent pratiquement tous les secteurs industriels et impliquent des phénomènes électriques, mécaniques, fluidiques et chimiques. Utilisez la recherche rapide pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt.

Analysis Of Linearly Polarized Modes

I. Avram, and I. Gavril Tarnovan
The Technical University of Cluj Napoca
Cluj, Romania

This paper presents a study on the propagation modes of electromagnetic waves through a step index fiber optics. To analyze the propagation of electromagnetic field, a simulation in Comsol 4.0 has been implemented using two different optical fibers. Obtaining the propagation modes, called linearly polarized modes (LPnm) to get their characterization according to the radial and azimuthal ...

Characterization of a 3D Photonic Crystal Structure Using Port and S-Parameter Analysis

M. Dong[1], M. Tomes[1], M. Eichenfield[2], M. Jarrahi[1], T. Carmon[1]
[1]University of Michigan, Ann Arbor, MI, USA
[2]Sandia National Laboratories, Albuquerque, NM, USA

We present a 3D port sweep method in a lossy silicon photonic crystal resonator to demonstrate the capabilities of COMSOL Multiphysics® for frequency domain analysis with input and output ports. This method benefits from the advantages of the S-parameter analysis to characterize the input and output coupling into the resonator. By pumping one end of the cavity with a CW plane wave, we are able ...

COMSOL Multiphysics in Plasmonics and Metamaterials

S. Sun [1,2], and G. Guo [2,3]
[1]Physics Division, National Center for Theoretical Sciences (North), National Taiwan University, Taipei 10617, Taiwan
[2]Department of Physics, National Taiwan University, Taipei 10617, Taiwan
[3]Graduate Institute of Applied Physics, National Chengchi University, Taipei 11605, Taiwan

This paper will present research about: * Effective-medium properties of metamaterials: A quasi-mode theory * 2D complete band gaps from 1D photonic crystal * Optical microcavities

A Study of Optical Sensor Based on Fiber Bragg Grating Using COMSOL Multiphysics®

C. Gavrila[1] and I. Lancranjan[2]

[1]Technical University of Civil Engineering Bucharest, Bucharest, Romania
[2]Advanced Study Centre, National Institute for Aerospace Research “Elie Carafoli”, Bucharest, Romania

Fiber optic sensors can measure a large range of physical, chemical and environmental variables such as temperature, pressure, shape, position, chemical concentration, moisture, etc. Fiber optic sensors provide measurements in applications where the conventional electrical based sensors cannot be used, due to measurement requirements such as extreme temperature, small size, high sensor count, or ...

Electromagnetics at Optical and Microwave Frequencies using COMSOL Multiphysics

Howie Stuart
Bell Laboratories, Lucent Technologies
Whippany, USA

The flexibility of COMSOL Multiphysics enables a variety of computational approaches to be applied towards solving electromagnetic problems across the whole spectrum. I will describe techniques for studying resonant electromagnetic interactions in a range of structures, including materials with negative electric permittivity (metals at optical frequencies), and small microwave resonators and ...

Surface Plasmon Resonance Sensors: Optimization of Diffraction Grating and Prism Couplers

W. Raja[1], A. Alabastri[1], S. Tuccio[1], R. Proietti Zaccaria[1]
[1]Department of Nanostructures, Istituto Italiano di Tecnologia, Genova, Italy

Surface plasmon resonance (SPR) sensors proved themselves as a promising device for many kinds of applications such as optical biosensing, binding constant determinationor nanofilm thickness measurements. Here we simulate using COMSOL Multiphysics® the light-polaritons coupling for the two most commonly used SPR setups: Attenuated total reflection (Kretschmann configuration) and diffraction ...

Long Period Gratings (LPG) in Photonic Crystal Fibres

J.S. Petrovic, V. Mezentsev, and I. Bennion
Aston University

A numerical model of long-period gratings in photonic crystal fibres is presented and illustrated on the example of a grating fabricated by an electric-arc. Resonant modes responsible for the attenuation bands in the transmission spectrum of the grating are identified and a correspondence with a grating in the step-index fibre established. The model is justified by good agreement between ...

Pros and Cons of Running COMSOL Multiphysics® Touch-Sensor Simulations on Amazon Web Services™

A. Gourevitch[1]
[1]Cypress Semiconductor Corp., San Jose, CA, USA

We report an implementation of parallel computing on Amazon Web Services™ (AWS) for touch-sensor modeling. COMSOL Multiphysics® was used to simulate an electromagnetic field distribution in a capacitive sensor assembly. Multiple COMSOL jobs were deployed on separate AWS instances and were executed in parallel. The simulation results indicate that implementation of parallel computing for COMSOL ...

Enhancement of Terahertz Emission by AuGe Nanopatterns

H. Surdi[1], A. Singh[1], S. S. Prabhu [1]
[1]Tata Institute of Fundamental Research, Homi Bhabha 
Road, Mumbai,India

Since the advent of Terhertz(THz) technology, improving the THz emission power has been one of the major research goal. One of the methods to increase the THz emission power is to increase the coupling of excitation laser light to the dielectric substrate.The field of nano-plasmonics exploits light-matter interactions at nanometer scale. With the help of metallic nano-structure at ...

Multiphysics Investigation of Thermo-optic Effects in Silicon-on-Insulator Waveguide Arrays

F. Magno, F. Dell’Olio, and V.M.N. Passaro
Politecnico di Bari

A theoretical investigation of thermo-optic effect in Silicon-on-Insulator (SOI) rib waveguides and waveguide arrays by means of the Finite Element Method (FEM) has been carried out. Both static and dynamic analyses have been performed.

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