Comsol multiphysics tutorial2 watch this video to learn the building of 3d geometry and simulation in comsol. Tapered airholes at each branch of nbs have been employed as a part of mirror accompanied by curvedwalls at cross junctions to form a small curved nanocavity. The site is made by ola and markus in sweden, with a lot of help from our friends and colleagues in italy, finland, usa, colombia, philippines, france and contributors from all over the world. The comsol multiphysics software offers this level of flexibility with its builtin equation interpreter that can interpret expressions, equations, and other mathematical descriptions on the fly before it generates the numerical model.
Whisperinggallerymode resonators certain compact electromagnetic structures support closed whisperinggallery wg modes. The analysis was performed by comparing the numerical simulation results. Thermal noise in whispering gallery mode resonators. Theoretical model for the coupling the whispering gallery modes are generally described by maxwell vector wave equation, which reduces to helmholtz. Aug, 2018 in this video, we will learn how to perform the mode analysis. Mar 03, 2010 the true mode frequencies within a cylindrical resonator are eigenvalues of the appropriate wave equation. Comsol multiphysics software with wave optics module is used for modelling. Tunable whispering gallery mode photonic device based on. Pdf onchip singlemode highq terahertz whispering gallery. Aug 14, 2018 an optical ring resonator left exhibits an effect similar to that of a whispering gallery right, but with light waves instead of sound. You can use these examples as a starting point for your own simulation work by downloading the tutorial model or demo app file and its accompanying instructions. By virtue of continuouswave exciting mose2microsphere whispering gallery mode wgm cavities, we realize multiple excitonic wgm lasing in the emission wavelength range of. Whispering gallery modes in standard optical fibres for fibre.
It is explained how femlab comsol multiphysics can be configured to calculate, the frequencies, electromagneticfield patterns, mode volumes, filling factors, radiation losses. You can find the number of modes that can be propagated with the lowest attenuation in any type of structure. Comsol multiphysics alternatives and similar software. Numerical evolutions of whispering gallery modes of both isotropic and anisotropic spheroidal resonators are presented and are used to build analytical approximations of these modes. Comsol multiphysics software video for single mode fiber, creating by kangkan vokto.
Comsol multiphysics tutorial for beginners how to model and simulate 3d geometry. Calculating the spectral properties of an optical ring. Adding and customizing expressions in the physics interfaces allows for freely coupling them with each. A whisperinggallerymodebased seismometer provides for receiving laser light into an optical fiber, operatively coupling the laser light from the optical fiber into a whisperinggallerymodebased optical resonator, operatively coupling a spring of a springmass assembly to a housing structure. The modelling of whispering gallery mode resonators.
Finite element simulation of a perturbed axialsymmetric whispering gallery mode and its use for intensity enhancement with a nanoparticle coupled to a microtoroid. To calculate the spectral properties of the model, boundarymode analyses and a. The most common prism coupler is very robust, but uses free. Controlling the lasing mode, emission direction, threshold, and quality factor of whisperinggallery mode lasing is important for practical applications such. Alternativeto is a free service that helps you find better alternatives to the products you love and hate. This graphene based nanodisk cavity structure with an ultrasmall mode volume and large purcell factor is a promising candidate for high.
This content is presented at fem workshop organized by epfl in omt etn workshop series. Browse solutions to common modeling questions, check for software updates, and log into comsol access to manage your active technical support cases. We analyze the experimental data on the evolution of the microwave mw response of the whispering gallery mode wgm resonator. Whispering gallery mode resonators comsol simulation tutorial for mode analysis of wgm resonators. Jan 14, 2020 controlling the lasing mode, emission direction, threshold, and quality factor of whispering gallery mode lasing is important for practical applications such as optical interconnections, onchip. Whispering gallery mode resonators comsol simulation. You can find the number of modes that can be propagated with the lowest attenuation in any type of. A whispering gallery mode based seismometer provides for receiving laser light into an optical fiber, operatively coupling the laser light from the optical fiber into a whispering gallery mode based optical resonator, operatively coupling a spring of a springmass assembly to a housing structure. Warning your internet explorer is in compatibility mode and may not be displaying the website correctly. Design module comsol multiphysics modeling software. Whisperinggallery mode lasing in a floating gan microdisk.
How to simulate the whisperinggallerymodes of dielectric. Modematching analysis of whisperinggallerymode cavities by xuan du b. In addition to the operating system requirements listed below, see the interfacing product suite requirements for specific requirements for the cad import module, design module, and the livelink products. Comsol multiphysics software understand, predict, and optimize. Modematching analysis of whisperinggallerymode cavities by. For example, the new release includes a new app editor tool, graphical updates for running apps and more control over what the apps can do. Calculating the spectral properties of an optical ring resonator. Optically pumped monolayer mose2 excitonic lasers from. Aug 14, 2018 in this video, we will learn how to perform the mode analysis for the rectangular waveguide. The preparation of a geometry is an important part of the simulation process, where the focus is on finding the most suitable way to represent the cad design for analysis. Tao lu, supervisor department of electrical and computer engineering dr.
Whisperinggallery mode resonators wgr are promising elements for future photonic devices, as they combine ultrahigh quality factor with small size and mode volume. This content is presented at fem workshop organized. The effect of a whispering gallery can be observed a similar way in another field of science entirely. Modematching analysis of whisperinggallerymode cavities. Though elliptical 5 or even nonplanar crinkled 6 or spooled 7 wg morphologies exhibit advantageous features with respect to certain applications, this paper considers only closed wg modes. Ahmadreza daraei, atefeh mohsenifard, mohammad kafi meibodi, whispering gallery modes formation in small nanocavities based upon crossed nanobeam structures, american journal of optics and photonics. Whispering gallery modes formation in small nanocavities. Pdf finite element simulation of a perturbed axial. Analytical approximations of whispering gallery modes in. We have performed a numerical study of whispering gallery modes of ring and race track optical. Em mode analysis for the circular waveguide comsol. Comsol simulation tutorial for thermal noises in wgm resonators. The qfactor of a highorder whispering gallery mode of 6 and an extremely small mode volume of 4.
This content is presented at fem workshop organized by epfl in omt etn. Optothermal transport behavior in whispering gallery mode. Comsol multiphysics software was used to simulate the. Microresonator, microcavity, whispering gallery, wgm, simulation. The preparation of a geometry is an important part of the simulation process, where the focus is on finding the most suitable way to represent the. Effects of nanocylinders on the whispering gallery modes in a. Though elliptical 6 or even nonplanar crinkled 7 or spooled 8 wg morphologies exhibit advantageous features with respect to certain applications, this paper considers only closed, planar wg. Surface plasmon coupled whispering gallery mode for guided. Millimeterwave wgm resonatorbased characterization of. The application gallery features comsol multiphysics tutorial and demo app files pertinent to the electrical, structural, acoustics, fluid, heat, and chemical disciplines. Though elliptical 6 or even nonplanar crinkled 7 or spooled 8 wg morphologies exhibit advantageous features with respect to certain applications, this paper considers only closed wg modes. An optical ring resonator left exhibits an effect similar to that of a whispering gallery right, but with light waves instead of sound.
In this video, we will learn how to perform the mode analysis. We plotted the quality factor due to the tetm fundamental whispering gallery mode radiation for various sphere diameters at 850nm. Exhouse 2d finiteelement simulation of the whisperinggallery. Hi guys, i am trying to simulate whispering gallery modes in a plasmonic hybrid resonator. Poman so, departmental member department of electrical and computer engineering. The whispering gallery wg mode method to measure complex permittivity is applied to the highly anisotropic material rutile. Em mode analysis for the rectangular waveguide comsol multiphysics tutorial5 vijanu.
The nonparaxial gaussian beam formula for simulating wave optics. Comsol is the developer of comsol multiphysics software, an interactive environment for modeling and simulating scientific and engineering problems. For this purpose, the finite element method with comsol multiphysics software was employed. Simulating an optical ring resonator in the comsol software. Em mode analysis for the rectangular waveguide comsol. Whispering gallery mode resonators have various applications, for example, they can be used as frequency filters, temperature sensors and biosensors. The true mode frequencies within a cylindrical resonator are eigenvalues of the appropriate wave equation. Theoretical model for the coupling the whispering gallery modes are generally described by maxwell vector wave equation, which reduces to. You can fix this by pressing f12 on your keyboard, selecting document mode and choosing standards or the latest version listed if standards is not an option. The solutions to such an equation take the form of bessel functions also known as cylindrical harmonics and the whispering gallery modes are defined by three mode numbers. Feb 08, 2007 how to simulate the whisperinggallery modes of dielectric microresonators in femlabcomsol how to simulate the whisperinggallery modes of dielectric microresonators in femlabcomsol oxborrow, mark 20070208 00.
Comsol webinar vibration and noise analysis in comsol multiphysics duration. Tunable whispering gallery mode device based on sidehole mof with. Whispering gallery mode microcavities are ideally suited to form microlaser devices because the high circulating intensity within the. Whispering gallery modes in standard optical fibres for.
Whispering gallery mode resonators wgr are promising elements for future photonic devices, as they combine ultrahigh quality factor with small size and mode volume. Reconfigurable liquid whispering gallery mode microlasers. The focus is on the thickness d f variation of the conducting endplates ceps from d f exceeding skin layer thickness. Due to the availability of analytical expressions for spherical resonators, we tested our model by determining the quality factors of a silica microsphere in air.
Numerical approaches to modeling of wgm resonator and waveguide coupling. Surface plasmon coupled whispering gallery mode for. Kondratiev 1, 1 russian quantum center rqc, skolkovo, moscow, russia. Such approximations are carried out mainly to have the possibility to have manageable analytic formulas for the eigenmodes and eigenfrequencies of anisotropic resonators. The crucial point in experimental usage of the wgm resonators is coupling to the rest optical circuit. Comsols main panel containing a falsecolor jet surface plot of the logarithmic electricfield intensity e 2 for this resonators te p 1,m 93 whisperinggallery mode.
Comsol simulation tutorial for mode analysis of wgm resonators. In this paper, we investigate conditions to form whispering gallery modes wgms in small nanocavities ncs which are designed at the intersection area of couple of nanobeams nbs structures. Thats right, all the lists of alternatives are crowdsourced, and thats what makes the data. Comsol multiphysics software video for single mode fiber, creating. See firsthand how the comsol software works in an interactive online demo tailored to discuss your needs. Mode volume calculation of whispering gallery modes. How to simulate the whisperinggallery modes of dielectric. Finite element simulation of a perturbed axialsymmetric whisperinggallery mode and its use for intensity enhancement with a nanoparticle coupled to a microtoroid. The design module expands the geometric modeling functionality of comsol multiphysics software by providing additional tools for creating geometries and importing a variety of cad file formats. The modelling of whispering gallery mode resonators core. Numerical simulation of eigenmodes of ring and race.
By virtue of continuous wave exciting mose2microsphere whisperinggallerymode wgm cavities, we realize multiple excitonic wgm lasing in the emission wavelength range of. The modelling prepared within this work gives contribution to the erdf project no. It is explained how femlab comsol multiphysics can be configured to calculate, the frequencies, electromagneticfield patterns, mode volumes, filling factors. How to simulate the whisperinggallery modes of dielectric microresonators in femlabcomsol how to simulate the whisperinggallery modes of dielectric microresonators in femlabcomsol oxborrow, mark 20070208 00. Investigation of the tunable plasmonic whispering gallery. The current work describes a theory and the results of the modelling of the propagation of light in whispering gallery mode optical microresonators with diameters 1 5 um. Numerical simulation of eigenmodes of ring and racetrack optical. Onchip singlemode highq terahertz whispering gallery.
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