listed if standards is not an option). You can see this new port formulation in almost all port-based tutorial models, such as: In the 2D axisymmetric formulation, it is beneficial to formulate the out-of-plane dependent variable as, which is referred to as the covariant formulation. Learn about the wave optics simulation capabilities of the Wave Optics Module here. Requires the Structural Mechanics Module or MEMS Module, Periodic ports with arbitrary diffraction orders. The Wave Optics Module, an add-on to the COMSOLMultiphysics software platform, is used by engineers and scientists to understand, predict, and study electromagnetic wave propagation and resonance effects in optical applications. A Gaussian beam propagating in an arbitrary direction toward the focal plane at the center of the circle. Read about these updates and more below. COMSOLMultiphysics version 5.6 brings several new tutorial models to the Wave Optics Module. This new port formulation replaces the constraint-free port formulation that was introduced in version 6.0. The relative permittivity, refractive index, loss tangent, and dielectric loss material properties can synchronize the material parameters between groups. This improves loss calculation in mode analyses for lossy waveguides. Browse and download tutorial models and example apps. For example, modeling a periodic metamaterial requires periodic ports that can handle arbitrary angles of incidence and diffraction orders. Read more about these updates below. You can use these . 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. Hecht . It requires adding a Wave Equation, Electric node to each dielectric scatterer domain. Download from the Application Gallery, Application Library Title: Perform various optics analyses with the COMSOL software. Resonant frequencies and threshold gain of laser cavities. You can specify the relative permittivity or refractive index as well as include more advanced material properties such as Debye, DrudeLorentz, and Sellmeier dispersion. For TE waves I get reasonable result by setting the cladding Download from the Application Gallery, Application Library Title: You can see this feature demonstrated in the new Optical Yagi-Uda Antenna model. The following existing models highlight this option: The mode fields of the Rectangular, Circular, and Coaxial port types are described by analytical functions. The Skin Depth Calculator feature is showcased in the following models: COMSOLMultiphysics version 6.1 brings several new tutorial models to the Wave Optics Module. In the Wave Optics Module, you can model these structures, including their high-order diffraction modes, with Floquet periodic conditions and varying diffraction orders. The details of the physics interfaces and study types for the Ray Optics Module are listed in the table. You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version Furthermore, a Far-Field Calculation node can be added to evaluate far-field quantities such as the scattering amplitude. A new skin-depth calculator functionality can be used to compute skin depth, which can be defined by the electrical conductivity or resistivity of a material. Learn how to use the Wave Optics Module to model photonic devices and optical waveguides. When expanding the electric field on a port boundary, the new Weak port formulation adds a scalar dependent variable for the expansion coefficient (the S-parameter) and then solves for the S-parameters and the tangential electric field on the boundary using only a weak expression. The Application Gallery features COMSOLMultiphysics tutorial and demo app files pertinent to the electrical, structural, acoustics, fluid, heat, and chemical disciplines. The absorption and scattering cross-sections of the particle are computed for a few different polar and azimuthal angles of incidence. Wave optics simulation brings new opportunities for the design and optimization of optical systems. COMSOL Multiphysics version 5.6 brings several new tutorial models to the Wave Optics Module. This feature is used instead of the Perfect Electric Conductor and Perfect Magnetic Conductor boundary conditions when reducing the model size from symmetry considerations. The Application Gallery features COMSOL Multiphysics tutorial and demo app files pertinent to the electrical, structural, acoustics, fluid, heat, and chemical disciplines. Meshing and solver settings are automatic with options for manual editing. Applications include directional couplers, fiber Bragg gratings, lens systems, waveguides, external optical systems, fiber couplings, laser diode stacks, and laser beam delivery systems. Compared to previous versions, eigenfrequency simulations can return fewer eigenfrequencies; however, the returned solutions have better accuracy, and there are many fewer spurious solutions returned. Your internet explorer is in compatibility mode and may not be displaying the website correctly. Both fundamental and advanced boundary conditions are included for your analyses. listed if standards is not an option). The model first computes a background field from Read More, This model demonstrates the simulation of the scattering of a plane wave of light by a gold nanosphere. listed if standards is not an option). Threshold Gain Calculations for Vertical-Cavity Surface-Emitting Lasers (VCSELs) The mode field distribution of a vertical-cavity surface-emitting laser (VCSEL). Wave Optics Module Updates For users of the Wave Optics Module, COMSOL Multiphysics version 5.3a brings automatic physics-controlled meshing, a Helmholtz-compliant implementation for Gaussian background fields, new postprocessing variables, and more. The Cable Tutorial Series shows how to model an industrial-scale cable in the COMSOL Multiphysics software and add-on AC/DC Module, and also serves as an introduction to modeling electromagnetic phenomena in general. Important Boundary Conditions in the Wave Optics Module. listed if standards is not an option). The resonance frequencies are either filtered by their spatial localization in the resonator or by Read More, Surface plasmon-based circuits are being used in applications such as plasmonic chips, light generation, and nanolithography. ea07029ddfc931b38a43974a1461e4c2 Polarization Plot Type. You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version We analyze ray propagation through a thin lens. For users of the Wave Optics Module, COMSOLMultiphysics version 5.6 brings a new study step for faster port sweeps, a Polarization plot type, and several new tutorial models. New functionality enables you to model multiple thin layers on top of a substrate with small skin depth. The results show the field distribution at the resonance wavelength. Learn more about the Wave Optics Module updates in more detail below. This includes, for example, modeling thin dielectric coatings on a metal surface. After the eigenfrequency simulation, the eigenfrequencies and Q-factors are automatically evaluated and presented in a table. For users of the Wave Optics Module, COMSOL Multiphysics version 6.1 introduces dielectric scattering functionality, the Linearly polarized plane wave background field feature in 2D axisymmetry, and new tutorial models. You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version By analyzing electromagnetic field distributions, transmission and reflections coefficients, and power dissipation in a proposed design, simulation of this kind leads to more powerful and efficient products and engineering methods. The multiphysics modeling capabilities of the COMSOLMultiphysics software help you study how other physics affect optical structures; for instance, stress-optical, electro-optical, and acousto-optical effects as well as electromagnetic heating. It requires combining a Layered Material in the global Materials and a Layered Material Link in the Materials node. Electromagnetic wave modeling requires highly specialized boundary conditions, including the capability of modeling unbounded domains as well as periodic structures such as metamaterials. If the propagation length around the ring is an integral number of wavelengths, Read More, Photonic crystal devices are periodic structures of alternating layers of materials with different refractive indices. Dielectric Scattering with the Electromagnetic Waves, Boundary Elements Interface Electromagnetic Wave, Boundary Elements You could not lonesome going in imitation of ebook store or library or borrowing from your friends to get into them. The beam envelope method analyzes the slowly varying electric field envelope for optically large simulations without relying on approximations. This makes it possible to gain deeper insight by enabling examination of virtually every aspect of the results. The numerical model is based on standard cable designs and validated by reported figures. Application Library Title: vertical_cavity_surface_emitting_laser You can see this new feature in the following models: A new FEMBEM coupling feature simplifies the setup of hybrid FEMBEM models for electromagnetic waves. This formulation is used for all study types except Mode Analysis and Boundary Mode Analysis and can be viewed in the following models: For the Scattering Boundary Condition and Matched Boundary Condition in the Electromagnetic Waves, Beam Envelopes interface, there is now a default option for the Incident field parameter: the No incident field value. Download from the Application Gallery, Application Library Title: This element type, or shape function, has full polynomial orders in all directions for each field component. enhanced_mems_mirror_coating Furthermore, the information about the type and location of the Symmetry Plane features are used when calculating far fields and when defining analytical Port mode fields and Lumped Port impedance. A YAG (lambda=1.06 micron) laser beam is Read More, Dielectric microspheres can support whispering gallery modes with high optical quality factors. The work flow is straightforward and can be described by the following steps: define the geometry, select materials, select a suitable Wave Optics interface, define boundary and initial conditions, define the finite element mesh, select a solver, and visualize the results. Application Library Title: time_to_frequency_fft_distributed_bragg_reflector. The Boundary Mode, Frequency-Stationary study sequence adds a Boundary Mode Analysis study step and a Frequency-Stationary study step. A plane TE-polarized electromagnetic wave is incident on a gold nanoparticle on a dielectric substrate. The results are presented using, for example, plots of electric and magnetic fields, reflectance, transmittance, diffraction efficiency, S-parameters, power flow, and dissipation. Learn how to use the Wave Optics Module to model photonic devices and optical waveguides. . Electromagnetic excitations of surface plasmons and plasmon polaritons. The input waveguide is split up into two waveguide interferometer arms. This can give a solution to certain finite element problems for lower shape orders, or with coarser meshes, and it can also make the resulting fields look smoother in postprocessing. Browse all of the Wave Optics Module updates in more detail below. By combining with a mass transport simulation, you can compute realistic refractive index profiles with anisotropic diffusion coefficients and use the results in an electromagnetics analysis. graphene_metamaterial_perfect_absorber For general modeling of waveguides and optical fibers, numerical mode-matched ports are required to properly feed waveguides with incoming light.