Comsol wave optics The formulation is based on the boundary element method (BEM) and is available in 2D and 3D. Feb 19, 2020 · Performing lens simulations in wave optics is generally difficult, because it requires a lot of mesh elements. Mar 1, 2014 · We report that, based on our experimental data, lens heating (LH) impact on wafer image can be effectively controlled by using a computational method (cASCAL) on critical device layers with no Mar 8, 2024 · The wave optics package in COMSOL Multiphysics 6. Aug 9, 2023 · Circular Polarization in Wave Optics Module Posted Aug 9, 2023, 6:20 p. 2 1 Reply COMSOL Multiphysics® version 5. See all updates here. "I attended two training courses titled "Electromagnetics in COMSOL Multiphysics: AC/DC" and "RF and Wave Optics" where I gained the necessary fundamental knowledge to dig deeper and obtain what is needed to enhance my research work. It allows its users to quickly and accurately predict electromagnetic field distributions, transmission and Apr 9, 2025 · In this blog post, you’ll learn how to reduce the size and computational complexity of a wave electromagnetics model by exploiting any symmetries it may have. This model computes the reflection and transmission coefficients and compares the results to the Fresnel equations. Notice your result may show that the wave is excited in the other waveguide core, if your mode fields have different signs than what is displayed in Figure 2 to Figure 5. May 21, 2020 · However, when I build and run the model in the RF module, I get different results than for the corresponding model in the Wave Optics module. The underlying equations for electromagnetics are automatically available in all of the physics interfaces — a feature unique to COMSOL Multiphysics. EDT Electromagnetics, Wave Optics, Modeling Tools & Definitions Version 6. The latter condition is fulfilled for a good conductor. COMSOL Multiphysics® version 6. Diffraction Grating Introduction This tutorial uses the Wave Optics Module and the Ray Optics Module to simulate the propagation of rays through a diffraction grating at different angles of incidence. Simulations of this kind result in more powerful and efficient products and engineering methods. Between the Wave Optics Module and the RF Module, which optics module would be more suitable? Is the Electromagnetic Waves, Frequency Domain (ewfd) interface alone sufficient for this simulation? To simplify the simulation of driven periodic problems, the Wave Optics Module has a dedicated Periodic Structure domain condition. To reduce the device size and the driving voltage, waveguide-based modulators are used for communication applications. View the specification chart to find your ideal combination. The physics interface solves the vector Helmholtz equation for piecewise The Wave Optics Module is used by engineers and scientists to understand, predict, and design electromagnetic wave propagation and resonance effects in optical applications. Introduction Optical modulators are used for electrically controlling the output amplitude or the phase of the light wave passing through the device. The sources can be in the form of point dipoles, line currents, or incident fields on boundaries or domains. The Ray Optics Module Physics Interface Guide The Ray Optics Module extends the functionality of the physics interfaces of the base package for COMSOL Multiphysics. The solution from the first wave equation is used as the initial value for the second wave equation. The model describes a unit cell of In the Select Physics tree, select Optics>Wave Optics>Electromagnetic Waves, Frequency Domain (ewfd). 0 simulates the magnitude of local electric field enhancement achieved by different morphologies of bimetallic nanostar particles. COMSOL 6. It allows its users to quickly and accurately predict electromagnetic field distributions, transmission and Introduction The Wave Optics Module is used by engineers and scientists to understand, predict, and design electromagnetic wave propagation and resonance effects in optical applications. By combining different physics, such as electrostatics, heat transfer, wave optics, ray optics, and chemical species transport, multiphysics simulations can capture the complex interactions that occur within semiconductor devices. 6 days ago · The COMSOL discussion forum covers a wide variety of simulation topics. 0 brings a new Part Library, new tutorial models, and more to the Wave Optics Module. Jul 24, 2023 · Hi, everyone, I want to simulate nano-antenna with legnth as 200 nm at visible light range. It allows its users to quickly and accurately predict electromagnetic field distributions, transmission and COMSOL Multiphysics® version 5. In wave optics transmittance is quite good showing different transmission at different wavelengths but in ray optics each wavelength is giving same transmission, Here my question is why the transmission is same Jan 12, 2025 · Optical Simulation: Use the Wave Optics Module to calculate the optical mode overlap with the depletion region. This chapter introduces you to the capabilities of this module. For this model you get a large speed advantage using the Electromagnetic Waves, Beam Envelopes interface compared to the Electromagnetic Waves, Frequency Domain interface. The Wave Optics Module is an add-on product to the COMSOL Multiphysics ® simulation software platform. It allows its users to quickly and accurately predict electromagnetic field distributions, transmission and Using COMSOL Multiphysics ® and the Wave Optics Module, a Far-Field Domain feature can be added to your model and used to plot the radiation pattern and 3D far field of your optical scattering models. I use "Electromagnetic Waves, Frequency Domain" to simulate the Ez field property of 1550nm wavelength of a waveguide and the result is correct, the scattering boundary condition is chosen as source. In addition, the effective Customize COMSOL Multiphysics to meet your simulation needs with application-specific modules. The wave couples from the input waveguide to the output waveguide. There are three types of periodic conditions available (only the first two for transient analysis): The central wave is the normally propagating m = 0 mode, whereas the obliquely propagating waves represent the m = -1 (left) and m = 1 (right) modes. 4 was used. The periodic condition can identify simple mappings on plane source and destination boundaries of equal shape. In this blog post, we demonstrate how the Wave Optics Module, an add-on to the COMSOL Multiphysics® software, can be used to perform lens simulations based on Maxwell’s equations. To optimize the design of the ErQ-coated slot waveguide in terms of optical confinement factor for input wavelength set at 1550 nm, the Wave Optics Module of COMSOL Multiphysics ® 5. The propagating waves are treated as rays that can be reflected, refracted, or absorbed. The Plasmonic Wire Grating Analyzer application computes the coefficients of refraction, specular reflection, and first-order diffraction as functions of the angle of incidence for a plasmonic wire grating on a dielectric substrate. Nov 3, 2020 · Port in wave optics module Posted Nov 3, 2020, 5:28 p. Jan 15, 2024 · Wave optics: Interference between two waves at different wavelength Posted Jan 15, 2024, 1:35 p. Sep 27, 2022 · wave optics: scatterer-on-substrate Posted Sep 27, 2022, 7:46 a. 0 5 Replies This model uses the Wave Optics Module and the Ray Optics module to model the propagation of rays through a diffraction grating at different angles of incidence. The simulation is set up with the electric field components E = (Ex, Ey, Ez) as dependent variables. In Study 1, a parametric sweep over the wavelength parameter wl is defined with a Mode Analysis study step. Select an Incident field to specify whether the input wave is specified by an Electric field, a Magnetic field, or a Gaussian Beam. The Wave Optics Module User’s Guide gets you started with modeling using COMSOL Multiphysics. 1 introduces dielectric scattering functionality, the Linearly polarized plane wave background field feature in 2D axisymmetry, and new tutorial models. In this article, you will see a demonstration of this, in which we expand on the base application built at the start of this course. m. " - Jim Vinson ~~ Renesas Electronics Corp. This article (includes demo videos) shows how to set up an optical scattering model of a gold nanosphere in COMSOL Multiphysics®. The governing equation can be written in the form Wave Optics Module Updates For users of the Wave Optics Module, COMSOL Multiphysics ® version 6. The geometry consists of a single dispersive slab with a sub-wavelength slit in it. What I Need Help With: Combining Physics: How should I combine the Semiconductor Module (for electrical analysis) with the Wave Optics Module (for optical mode simulation)? Feb 19, 2020 · Performing lens simulations in wave optics is generally difficult, because it requires a lot of mesh elements. The details of the physics interfaces and study types for the Ray Optics Module are listed in the table. You will see a demonstration of this in this article, where we continue to build upon the base application built in the beginning of the course. Should I choosee RF module or wave optics frequency domain. Using the Optical Transitions feature in the Semiconductor Introduction Research in the field of photonic integrated circuits (PICs) is taking a boost, especially because of its compatibility with the existing CMOS fabrication techniques using materials such as silicon (Si) and silicon dioxide (SiO2). Browse and download tutorial models and example apps. For a case that my suggestion above does not work, I have checked the Comsol Wave Optics Module user guide for several ways of modeling nonlinear refractive index. It is primarily used to model electromagnetic wave propagation in different The Wave Optics Module solves problems in the field of electromagnetic waves at optical frequencies (corresponding to wavelengths in the nano- to micrometer range). EDT 4 Replies Krupal Patel Send Private Message Flag post as spam A plane wave is incident on a reflecting hexagonal grating. Does anyone know why this might be? The results from the RF module seem more trustworthy, but the fact that I get two different sets of results depending on the module worries me. Wave optics module is used to simulate the optical waveguiding mode in the 2D cross section of waveguide. comsol. It is primarily used to model electromagnetic wave propagation in different The Electromagnetic Waves, Beam Envelopes (ewbe) interface (), found under the Wave Optics branch () when adding a physics interface, is used to compute electric and magnetic field distributions for systems and devices where the field amplitude varies slowly on a wavelength scale. The Electromagnetic Waves, Frequency Domain (ewfd) interface (), found under the Wave Optics branch () when adding a physics interface, is used to solve for time-harmonic electromagnetic field distributions. 4 brings additional boundary conditions for the Electromagnetic Waves, Beam Envelopes interface for modeling thin dielectric layers, antireflective coatings, and mirror-like surfaces. Figure 7 shows the result, when there is a phase difference between the fields of the exciting ports. May 7, 2018 · Hi, I have some questions when using wave optics module, 1. This Documentation and the Programs described herein are furnished under the COMSOL Software License Agreement (www. The scattering coefficients for the different diffraction orders are calculated for a few different wavelengths. Wave Optics Module Updates For users of the Wave Optics Module, COMSOL Multiphysics ® version 6. By comparing the wave fronts at the top and bottom of the structure, we can qualitatively observe that the desired behavior of deflecting a normally incident wave has been achieved. 4 0 Replies COMSOL Multiphysics® ソフトウェアとアドオンの波動光学モジュールを組み合わせて, 光学デバイスのシミュレーションと最適化を行うことができます. Getting Started with Optical Scattering Modeling This course is an introduction to modeling optical scattering using the COMSOL Multiphysics ® simulation software and the add-on Wave Optics Module. EDT 0 Replies Dong Wang Send Private Message Flag post as spam Surface plasmon-based circuits are being used in applications such as plasmonic chips, light generation, and nanolithography. View the updates here. You can use the Wave Optics Module to efficiently model and optimize optical systems and photonic devices. I suggest everyone interested in the topic to visit the Wave Optics Application Library. Optical energy density (correlated to optical power flux density) are used to approximate first principle nonlinear optical absorption (TPA and FCA) with the relevant effective area value. 5 brings new and improved features and tutorial models for the Wave Optics Module. La versione 6. The Wave Optics Module has a dedicated Periodic Condition. Apr 9, 2025 · You will find step-by-step modeling instructions, discussions of a variety of physics, product news, and more on the COMSOL Blog. It allows its users to quickly and accurately predict electromagnetic field distributions, transmission and In this archived webinar, learn how to use the beam envelope method in COMSOL Multiphysics ® to solve nonlinear optics problems. With the RF Module, see RF Heating, Application Library path RF_Module/Microwave_Heating/rf_heating. EST Wave Optics Version 5. Apr 9, 2025 · In this webinar, you will learn how to model wave and ray optics using the COMSOL Multiphysics ® software. 3 simplifies modeling of periodic structures, introduces tools for calculating optical absorption, scattering, and extinction properties, and enhances wave absorption capabilities, allowing scattered waves to be absorbed in any specified direction. Matched Boundary Condition When Wave Vectors is set to bidirectional, select an Input wave — First wave (the default) or Second wave — that the specified input electric field is associated with. At boundaries between different media, each incident ray can be split into a reflected ray and a refracted ray May 30, 2024 · Hello, I am coupling wave and ray optics for large geometry of metasurface by following the differaction grating comsol model. In this model, two types of parts are used — straight and tapered slab waveguides. Nov 1, 2016 · Wave optics module Posted Nov 1, 2016, 1:33 a. 3 - Wave Optics Module User’s GuideWave Optics Module User’s Guide The Electromagnetic Waves, Frequency Domain physics interface contains only a Wave Equation, Electric domain feature with a Perfect Magnetic Conductor boundary condition on all exterior boundaries. Instructions on how to use COMSOL in general are included with the COMSOL Multiphysics Reference Manual. Simulations of this ki nd result in more po werful and efficient products and engineering methods. And I am to get the transmittance at range of wavelength. This also makes nonstandard modeling easily accessible. May 1, 2025 · How to simulate this in the comsol, as if we vary the angle, the reflectance also collects symmetry to it, so it gives the interference aspect. The grating cell consists of a protruding semisphere. Browse the COMSOL Learning Center for self-paced courses and articles. COMSOL Multiphysics® version 5. Product Suite Ray Optics Module Ray Optics Module Simulate Ray Tracing in Optically Large Systems The Ray Optics Module is an add-on to the COMSOL Multiphysics ® software that allows you to model electromagnetic wave propagation with a ray-tracing approach. The Transition Boundary Condition is based on the assumption that the wave propagates in the normal direction in the thin layer. Laser Heating interface, which requires the Wave Optics Module. 3 di COMSOL Multiphysics® apporta nuove funzionalità, una nuova condizione al contorno e diversi tutorial nuovi e aggiornati al Wave Optics Module. Thus, the wave could be incident in the normal direction or the wave could be refracted to propagate in a direction close to the normal direction. Using COMSOL Multiphysics ® and the Wave Optics Module, a Far-Field Domain feature can be added to your model and used to plot the radiation pattern and 3D far field of your optical scattering models. EST Wave Optics, Studies & Solvers, Physics Interfaces Version 6. The geometry of the problem is composed by the array of cylindrical nanowires and a spherical perfectly matched layer. The surface and line plots of the electric field distribution are obtained and analysed. This video presents the electromagnetic mode analysis of a dielectric waveguide performed using COMSOL Multiphysics. View online (246 pages) or download PDF (1 MB) Comsol Wave Optics Module User's Guide • Wave Optics Module software PDF manual download and more Comsol online manuals Apr 20, 2011 · At this point the solution has converged and fulfills kind of a self-consistency. Introduction to the Optics Simulation Methods There are two main categories of methods to simulate Introduction The Wave Optics Module is used by engineers and scientists to understand, predict, and design electromagnetic wave propagation and resonance effects in optical applications. The condition automatically adds the required ports and periodic conditions as subnodes to the Periodic Structure node. We go over the benefits of this method and advanced examples. Introduction The Wave Optics Module is used by engineers and scientists to understand, predict, and design electromagnetic wave propagation and resonance effects in optical applications. Jul 28, 2018 · This manuscript is a step-by-step graphical instructions for COMSOL Multiphysics with Ray Optics Module and Wave Optics module modeling and computational physics simulation. For a list of all the core physics interfaces included with a COMSOL Multiphysics license, see Physics Interface Guide. Doing extensive numerical simulations on the photonic component design before fabricating the final prototype essentially saves resources. In this course, you will be guided through the basics of setting up an optical scattering model step by step. Leggi qui. Introduction A plane electromagnetic wave propagating through free space is incident at an angle upon an infinite dielectric medium. Read now and subscribe! The model demonstrates how to build the geometry from waveguide parts in the Wave Optics Module Part Library. Used together, COMSOL Multiphysics® and the RF Module or the Wave Optics Module provide an all-in-one simulation environment with capabilities well suited for simulating electromagnetic waves. First, we will look at the optical transitions using only the Semiconductor interface and continue with how you can couple that with the Wave Optics interface. “案例下载”页面提供丰富的 COMSOL Multiphysics ® 教学案例和 App 演示文件，涉及电气、结构、声学、流体、传热和化工等各个学科领域。欢迎下载这些教学案例或 App 演示文件及其随附的操作说明，将其作为您建模仿真工作的绝佳起点。 您可以使用左侧的【快速搜索】工具查找与您的专业领域相关的 I would recommend them for COMSOL training. This tutorial shows how to solve the full time-dependent wave equation in dispersive media such as plasmas and semiconductors. Watch this archived webinar on the basics of modeling and simulating wave optics for application areas such as directional couplers, nonlinear optical waveguides, optically large systems, and metamaterials. Introduction to the Optics Simulation Methods There are two main categories of methods to simulate The Wave Optics Module is used by engineers and scientists to understand, predict, and design electromagnetic wave propagation and resonance effects in optical applications. COMSOL is used to simulate a 2 dimensional symmetric and asymmetric waveguide. The 2D TM in-plane wave model solves for the vector potential from the wave equation and for an auxiliary electric polarization density from an ordinary differential equation. Browse the threads and share your ideas with the COMSOL community. 6 brings new features and tutorial models to the Wave Optics Module. Learn how to use the Wave Optics Module to model photonic devices and optical waveguides. The Wave Optics Module, an add-on to the COMSOL Multiphysics ® software platform, is used by engineers and scientists to understand, predict, and study electromagnetic wave propagation and resonance effects in optical applications. It allows its users to quickly and accurately predict electromagnetic field distributions, transmission and reflection The model demonstrates how to build the geometry from waveguide parts in the Wave Optics Module Part Library. Thanks in advance. The Electromagnetic Waves, Transient (ewt) interface (), found under the Wave Optics branch () when adding a physics interface, is used to solve a time-domain wave equation for the magnetic vector potential. The Wave Optics Module solves problems in the field of electromagnetic waves at optical frequencies (corresponding to wavelengths in the nano- to micrometer range). To find the frequencies for the non-zero wave vectors, solve for the frequency using a nonlinear state equation, requiring the field to be normalized in the unit cell, and a second wave equation. Wave optics simulation brings new opportunities for the design and optimization of optical systems. The functionality of the COMSOL Multiphysics base package is given in the COMSOL Multiphysics Reference Manual. Studies and Solvers in the COMSOL Multiphysics Reference Manual Band-Gap Analysis of a Photonic Crystal: Application Library path Wave_Optics_Module/Gratings_and_Metamaterials/bandgap_photonic_crystal The Electromagnetic Waves, Beam Envelopes (ewbe) interface (), found under the Wave Optics branch () when adding a physics interface, is used to compute electric and magnetic field distributions for systems and devices where the field amplitude varies slowly on a wavelength scale. Read about these updates and more below. It allows its users to quickly and accurately predict electromagnetic field distributions, transmission and The Wave Optics Module solves problems in the field of electromagnetic waves at optical frequencies (corresponding to wavelengths in the nano- to micrometer range). Download Files Suggested Products This model example illustrates applications of this type that would nominally be built using the following products: RF Module Wave Wave optics module is used to simulate the optical waveguiding mode in the 2D cross section of waveguide. It is a special case of a Stationary study in which the stationary heat transfer equation is solved together with a frequency-domain equation for electromagnetics. This guide describes the Wave Optics Module, an optional add-on package for COMSOL Multiphysics® designed to assist you to set up and solve electromagnetic wave problems at optical frequencies. Hecht. However, when the intensity is large, so large that the electric field of the light field actually start to perturb the electron clouds around the nuclei, the refractive index start to depend on the intensity. This treatment of electromagnetic radiation uses Introduction For low intensities, the refractive index is independent of the intensity of the light in the material. View the updates. Browse all of the Wave Optics Module updates in more detail below. In other words, rays can interact with any surfaces in the model geometry that they hit, without the order of ray-boundary interactions having to be specified a priori. Learn more about the specialized features for waveguide simulation in the Wave Optics Module here. Learn how to use the COMSOL Multiphysics® software at a guided training course, webinar, or COMSOL Day. Adding a Substrate When simulating optical scattering applications using COMSOL Multiphysics ® and the Wave Optics Module, you can model complex background geometries along with the corresponding field. Produktpalette Wave Optics Module Wave Optics Module Mikro- und nanooptische Geräte analysieren Das Wave Optics Module, ein Add-On zur COMSOL Multiphysics ® Software-Plattform, wird von Ingenieuren und Wissenschaftlern verwendet, um die Ausbreitung elektromagnetischer Wellen und Resonanzeffekte in optischen Anwendungen zu verstehen, vorherzusagen und zu studieren. Thus, for dielectrics, like glass, the refractive index increases The model demonstrates how to build the geometry from waveguide parts in the Wave Optics Module Part Library. Also modeled were vector modes in and out of fiber by means the fast and efficient beam envelope method available in the COMSOL Wave Optics Module. The destination can also be rotated with respect to the source. 詳しくはこちら. Wave Optics Module Updates For users of the Wave Optics Module, COMSOL Multiphysics ® version 5. In summary, direct coupling of free-space radiation to SPPs using a thin film of ITO on Au is demonstrated in COMSOL® and detailed analysis of mode dispersion and field profiles are presented to verify the surface mode characteristics. Periodic The Electromagnetic Waves, Boundary Elements (ebem) interface () is used to solve for time-harmonic electromagnetic field distributions. 2 - Wave Optics Module User’s GuideWave Optics Module User’s Guide COMSOL Multiphysics® version 5. The information in this guide is specific to this module. The distance between the pillars prevents light of certain wavelengths to propagate into the crystal structure. A plane wave is incident on a reflecting hexagonal grating. Find an onsite event near you or watch online. This application describes the wave propagation in a photonic crystal that consists of GaAs pillars placed equidistant from each other. . In the results section, several critical Hurricane Melissa leaves most of Jamaica without power Optics: Half-wave plate | MIT Video Demonstrations in Lasers and Optics This application describes the wave propagation in a photonic crystal that consists of GaAs pillars placed equidistant from each other. In this model the free-space wavelength is 1. The Ray Optics Module employs nonsequential ray tracing with a deterministic ray splitting algorithm at boundaries. Learn how to use COMSOL Multiphysics® for specific application areas. In this work we use the Wave Optics Module of COMSOL Multiphysics® to analyze infrared scattering by subwavelength arrays of cylindrical silicon nanowires, within the electromagnetic waves frequency domain (ewfd) framework. The mode fields are multiplied by the respective S-parameters, to make the waves have the field strength as in the full solution in Figure 3. 55 μ m. Durch die Analyse Exploiting Symmetries in Radiofrequency and Wave Optics Modeling Application ID: 117681 One of the ways we can simplify and reduce the size and computational complexity of a finite element model is by using any symmetries present in a model. A comparison is made between the analytical solution using the Fresnel approximation and the solution obtained using both the Electromagnetic Waves, Frequency Domain and the Electromagnetic Waves, Beam Envelopes interfaces. This interface is found under the Wave Optics branch () when adding a physics interface,. The Wave Optics Module is used by engineers and scientists to understand, predict, and design electromagnetic wave propagation and resonance effects in optical applications. Wave Equation, Electric is the main feature node for this physics interface. 因此,目标是使得一系列目标函数中的最大值尽可能地小,MMA 优化求解器非常适用于此类问题。网格的拓扑结构是固定的,便于进行基于梯度的优化。为了简化制造,圆柱体的形状也是固定的,因此,唯一允许改变的是圆柱体位置。如果允许它们移动得很远,可能会发生碰撞,导致关于反转单元或 NaN/Inf 值的 Aug 20, 2024 · The particles are ceramic particles like alumina with a d50 size ranging from 150nm to 500nm. We will demonstrate how to set up a model of ray propagation in large optical systems using the Ray Optics Module, an add-on to the software. Il Wave Optics Module, un add-on della piattaforma software COMSOL Multiphysics ®, è usato da tecnici e ricercatori per comprendere, prevedere e studiare la propagazione delle onde elettromagnetiche e gli effetti di risonanza nelle applicazioni ottiche. All the example models investigated and visualized with the help of Finite Element Analysis are referenced from the standard USA undergraduate text on Optics by E. The Forked Grating Coupler invention described herein has been submitted for a provisional patent. EDT 4 Replies Krupal Patel Send Private Message Flag post as spam For a given frequency ν, or equivalently, free-space wavelength λ0 = c0 / ν, the Wave Optics Module’s Electromagnetic Waves, Frequency Domain interface can be used for the mode analysis. com/comsol-license-agreement) and may be used or copied only under the terms of the license agreement. Discussion and Demo: Optoelectronics We begin with taking a look at the built-in optoelectronics coupling that is designed for modeling LEDs, photodiode and optical sensors. drsj qcvh prohwvsz kujc bhhtzjo cjd gooutrfp tac guio xqdhce nwvphk mjtb qsg hss jbbbnyvz