Showing result: 1 - 9 of 9
Optical Systems & Photonics
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RF Introductory Tutorial: Step by Step Modeling of a Periodic Structure
This is an introductory tutorial that shows how to model periodic structures using the COMSOL RF Module.
Periodic structures such as gratings and etalons are widely used in optoelectronics and as filters. Periodic metamaterial structures are also finding applications in radar and optical...
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Mie Scattering off Plasmonic Nanoparticle and Radar Cross-Section Computations
This model demonstrates one of the most basic applications of the RF module: calculations of the differential scattering cross-section, as well as total cross-sections, including absorption, scattering, extinction and radar cross-sections.
It also illustrates the use of symmetry planes in e...
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Photonic Crystal
Photonic crystal devices are periodic structures of alternating layers of materials with different refractive indices. Waveguides that are confined inside of a photonic crystal can have very sharp low-loss bends, which may enable an increase in integration density of several orders of magnitude....
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Stress-Optical Effects in Waveguide
Planar photonic waveguides in silica (SiO2) have a great potential for use in wavelength routing applications. The major problem with these kinds of waveguides is birefringence. Anisotropic refractive indices result in fundamental mode splitting and pulse broadening. The goal is to minimize birefrin...
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Second Harmonic Generation of a Gaussian Beam
Laser systems are an important application area in modern electronics. With nonlinear materials it is possible to generate harmonics that are an even multiple of the frequency of the laser light.
This model shows how a second harmonic generation can be set up as a transient wave simulation, usin...
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Band Gap Analysis of a Photonic Crystal
This model investigates the wave propagation in a photonic crystal that consists of GaAs pillars placed equidistant from each other.
The distance between the pillars determines a relationship between the wave number and the frequency of the light, which prevents light of certain wavelengths prop...
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Photonic Micro Prism
To reduce radiative losses in photonic waveguide bends, a microprism can be used. If a microprism is placed between two waveguides forming a sharp bend, light will be guided between the waveguides, through the prism.
This model describes the propagation of Electromagnetic waves in a miroprism. Th...
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Propagation of a 3D Gaussian Beam Laser Pulse
Laser systems are an important application area in modern electronics. There are several ways to generate a laser beam, but they all have one thing in common: the wavelength is determined by the stimulated emission, which depends on material parameters.
This model is a 3D time domain simulation...
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Step Index Fiber
The transmission speed of optical waveguides is superior to microwave waveguides, because optical devices have a much higher operating frequency than microwaves, enabling a far higher bandwidth.
One of the winning devices has been the single mode fiber, having a step index profile with a higher...
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