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Calculating the Spectral Properties of an Optical Ring Resonator
If you ever visit the extravagant dome within St. Paul’s Cathedral in London, be careful what you say. As Lord Rayleigh discovered circa 1878, the vaulted structure exhibits an interesting acoustics...
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Keynote Video: Improving Synchrotron Light Sources with Applications
When it comes to synchrotron light sources, brighter is better. By using bright beams in their accelerator, researchers at the Advanced Proton Source (APS) synchrotron facility can efficiently gather...
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Engineering the Flow of Light Using Photonic Crystals
In 1980, Eli Yablonovitch from Bell Communication Research pondered how to reduce losses in semiconductor lasers in a specific frequency range. He sliced periodic circular holes in a transparent medium...
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What Is the Curl Element (and Why Is It Used)?
The curl element, sometimes called edge element or vector element, is widely used in the finite element method to solve electromagnetics problems. This blog post gives a comprehensive introduction to...
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How to Perform Lens Simulations Using the Wave Optics Module
Performing lens simulations in wave optics is generally difficult, because it requires a lot of mesh elements. In this blog post, we demonstrate how the Wave Optics Module, an add-on to the COMSOL...
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Modeling the Scattering of Light Off of an Object on a Substrate
A frequent modeling situation encountered in wave electromagnetics modeling is to compute the scattering of light off of a structure patterned on top of a uniform dielectric substrate. In this blog...
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Evanescent Component of the Nonparaxial Gaussian Beam
The Gaussian beam is the most popular light source in wave optics. This blog post discusses the evanescent component of the nonparaxial Gaussian beam background field, a feature available in the...
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2 Video Discussions on Multiphysics Simulation of Optics and Photonics
Why use multiphysics software for optical simulations? This is one of the questions that Laser Focus World Senior Editor John Wallace asks in a 2-part video chat with Chris Boucher, technical product...
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Modeling Waveguides that Support Multiple Modes
Have you ever been in the situation where you are modeling a waveguide that supports multiple different modes at its highest operating frequency? As you might already know, such cases require a bit of...
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Modeling a Scatterer Near an Optical Waveguide
The dielectric slab waveguide is one of the conceptual building blocks in photonic structure design. Although most real structures are more complex than just a two-dimensional dielectric slab, we can...
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Computational Electromagnetics Modeling: Which Module to Use?
A question we get asked all of the time is: “Which of the COMSOL products should be used for modeling a particular electromagnetic device or application?” In addition to the capabilities of the core...
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