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Modeling Electromagnetic Waves and Periodic Structures
We often want to model an electromagnetic wave (light, microwaves) incident upon periodic structures, such as diffraction gratings, metamaterials, or frequency selective surfaces. This can be done...
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Benchmark Model Results Agree with Fresnel Equations
Have you ever wondered why boaters wear polarized sunglasses? It’s because sunlight reflecting off the water is primarily polarized in one direction, and polarized sunglasses will block this component...
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Optimizing Mach-Zehnder Modulator Designs with COMSOL Software
The Mach-Zehnder modulator is a type of optical modulator used for communication applications. To understand how it works and how to optimize its design, you can use the COMSOL simulation software. How...
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Ports and Lumped Ports for Wave Electromagnetics Problems
When using the COMSOL Multiphysics software to simulate wave electromagnetics problems in the frequency domain, there are several options for modeling boundaries through which a propagating...
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Modeling Metallic Objects in Wave Electromagnetics Problems
Metals are materials that are highly conductive and reflect an incident electromagnetic wave — light, microwaves, and radio waves — very well. When using the RF Module or the Wave Optics Module to...
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Modeling of Materials in Wave Electromagnetics Problems
Whenever we are solving a wave electromagnetics problem in COMSOL Multiphysics, we build a model that is composed of domains and boundary conditions. Within the domains, we use various material models...
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Simulation Tools for Solving Wave Electromagnetics Problems
When solving wave electromagnetics problems with either the RF or Wave Optics modules, we use the finite element method to solve the governing Maxwell’s equations. In this blog post, we will look at...
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Modeling Laser-Material Interactions in COMSOL Multiphysics
A question that we are asked all of the time is if COMSOL Multiphysics can model laser-material interactions and heating. The answer, of course, depends on exactly what type of problem you want to...
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Guide to Frequency Domain Wave Electromagnetics Modeling
Over the last several weeks, we’ve published a series of blog posts addressing the various domain and boundary conditions available for wave electromagnetics simulation in the frequency domain; as well...
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Should We Model Graphene as a 2D Sheet or Thin 3D Volume?
Within the research community — and on the COMSOL Blog — graphene has been a topic of great interest. The unique properties that make this material so remarkable can also make it challenging to...
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App: Measuring the Diffraction Efficiency of a Wire Grating
Diffraction gratings are often used as a tool for bending and spreading light in optical instruments. Analyzing the diffraction efficiency of such optical components is important, as this can affect...
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Simulation Improves Electromagnetic IED Detection Systems
Locating and removing landmines and other improvised explosive devices (IEDs) is an important yet challenging task, especially with new advancements in cloaking technology. Using COMSOL Multiphysics®...
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Model Cables and Transmission Lines in COMSOL Multiphysics
Electrical cables are classified by parameters such as impedance and power attenuation. In this blog post, we consider a case for which analytic solutions exist: a coaxial cable. We will show you how...
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Modeling Phononic Band Gap Materials and Structures
Today, guest blogger and Certified Consultant Nagi Elabbasi of Veryst Engineering shares simulation research designed to optimize band gaps for phononic crystals. Phononic crystals are rather unique...
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Simulating Holographic Data Storage in COMSOL Multiphysics
Physicist and electrical engineer Dennis Gabor invented holography about 70 years ago. Ever since then, the form of optical technology has developed in many different ways. In this blog post, part one...
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Simulation Paves the Way for More Efficient OLED Devices
When it comes to creating the next generation of flat panel displays and solid-state area lighting, organic light-emitting diodes, or OLEDs, may be used to help. While recognized for its various...
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How to Simulate a Holographic Page Data Storage System
We’ve learned how to simulate a simple bit-by-bit holographic data storage model in COMSOL Multiphysics by choosing an appropriate beam size and implementing the recording and retrieval process. Today,...
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Comparing Two Interfaces for High-Frequency Modeling
It is always important to choose the correct tool for the job, and choosing the correct interface for high-frequency electromagnetic simulations is no different. In this blog post, we take a simple...
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How to Implement the Fourier Transformation in COMSOL Multiphysics
In a previous blog post, we discussed simulating focused laser beams for holographic data storage. In a more specific example, an electromagnetic wave focused by a Fourier lens is given by Fourier...
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Study the Design of a Polarizing Beam Splitter with an App
Polarizing beam splitters are optical devices used to split a single light beam into two beams of varying linear polarizations. These devices are useful for splitting high-intensity light beams like...
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