Ansys Lumerical FEEM

Ansys Lumerical FEEM (Finite Element EigenMode), a Maxwell solver based on the expansion algorithm, offers superior accuracy and performance scaling. 



Frequency Domain Reflectometry (FDR)

Optically propagate a signal through a metal tine or another wave path in Ansys FEEM by seamlessly deploying oscillators. To gauge soil moisture, the difference in frequency between the output wave and the return wave is monitored.

Traditional time domain reflectometry (TDR), which is best suited for locating open and short circuit situations in conductors, may not be as sensitive to cable degradation as the FDR method due to its inherent benefits.

Because there are filtering and noise-reducing techniques in the frequency domain, for instance, FDR is less vulnerable to electrical noise and interference. Increased sensitivity and accuracy may result from this.

Additionally, since TDR pulses may have trouble moving forward after numerous noteworthy reflections, FDR analysis in FEEM is better suited for locating and describing a series of multiple deterioration episodes in lengthy cables.


Fourier Analysis for Signal Processing

In Ansys FEEM, The Fourier Transform and Plot/Modify Input Signal dialog boxes allow engineers to set several different functions for the x and y axes, apply different FFT windowing techniques, and set various output options.

Acting as a tool for signal decomposition for further filtration, engineers can visualize the material separation of the various signal components.  This process of bridging the gap between these two worlds (time and frequency domain) is paramount to RF engineers.

Engineers can easily apply the various Discrete Fourier Transform calculation methods using FEEM, starting with the application of the Fourier Transform, moving on to the simplified calculation technique, and concluding with the Cooley-Tukey method of the Fast Fourier Transform.


Spatially Varying Index Perturbations

Engineers can use the (n,k) Material import object in Ansys FEEM to transform spatially variable stress or strain into a spatially variable refractive index profile.

It is crucial to distinguish between circumstances that will cause diagonal anisotropy and those that won’t when introducing the spatially variable refractive index owing to stress or strain. Using a nk import material, which is accessible in Ansys FEEM, FDTD, and MODE, it is simple to address the diagonal anisotropy that is the focus of this example.

It will be essential to diagonalize the permittivity tensor and perform a matrix transformation to add the influence of the strain if the stress or strain produces a permittivity tensor with off-diagonal elements.  Matrix transformation makes it simple to set up the matrix transform grid properties and specific stress inputs while also providing engineers with visual assistance to help them choose the best application.

















Additional Ansys Lumerical Products

Lumerical software overview and core capabilities



Ansys Lumerical FDTD

Simulation of Nanophotonic Devices

  • Q-factor Analysis
  • Band Structure Analysis
  • Flexible Material Plug-ins
  • Cloud and HPC Capability
  • 2D or 3D Model Simulation
  • Full Vectoral Customization
  • Far-field Projection Analysis
  • Spatially Varying Anisotropy
  • Custom Surfaces and Volumes
  • Advanced Conformal Meshing
  • Automated S-parameter Extraction


Ansys Lumerical MODE

Optical Waveguide & Coupler Solver

  • Overlap Analysis
  • Bend Loss Analysis
  • Helical Waveguides
  • 2.5D varFDTD Solver
  • Anisotropic Materials
  • Advanced Conformal Mesh
  • Eigenmode Expansion Solver
  • Spatially Varying Temperature
  • Charge Density Profile Imports
  • Finite Difference Eigenmode Solver
  • Magneto-optical Waveguide Analysis


Ansys Lumerical STACK

Optical Thin-Film Simulation

  • Plane-Wave Illumination
  • Wavefunction Simulation
  • Frequency Domain Analysis
  • GUI and Lumerical Scripting
  • Mixed Signal Representation
  • Capture Interference Effects
  • Capture Microactivity Effects
  • Optical Thin-Film Application
  • Import Compact Libraries Models
  • Dipole/Dipole Off-Axis Illumination
  • Simulate Thin Film Multilayer Stacks






Ansys Lumerical CHARGE

3D Charge Transport Solver

  • Scriptable Material Properties
  • Automatic Finite Element Meshing
  • Electrical/Thermal Material Models
  • Parameterizable Simulation Objects
  • Geometry-Linked Sources/Monitors
  • Comprehensive SoC Material Models
  • Small Signal Alternating Current analysis’
  • Isothermal, Non-Isothermal, Electro-Therma


Ansys Lumerical HEAT

3D Heat Transport Solver

  • Joule (J) Heating Solver
  • Flexible Materials Database
  • Automatic Mesh Refinement
  • Finite-Element Meshing Automation
  • Finite-Element Heat Transport Solver
  • Steady-State and Transient Simulation
  • Rapid Transition from 2D & 3D Solvers
  • Self-Consistent Heat/Charge Transport
  • Conductive, Convection & Radiative FX


Ansys Lumerical DGTD

3D Electromagnetic (EM) Simulator

  • Highly Interoperable
  • Object-Conformal Mesh
  • Material-Adaptive Mesh
  • Gaussian Vector Beams
  • Automation and Scripting
  • Bloch Boundary Conditions
  • Automatic Mesh Refinement
  • High Order Mesh Polynomials
  • Transitional 2D & 3D Modeling
  • Far-field and Grating Projections







Photonic Integrated Circuit Simulator

  • Transient Block Analysis
  • Frequency Domain Analysis
  • GUI and Lumerical Scripting
  • Mixed Signal Representation
  • Travelling Wave Laser Model
  • Automatic Parameter Sweeps
  • Multi-Variant Statistical Analysis
  • Electronic-Photonic Co-Simulation
  • Transient Sample Model Simulator
  • Multimode and Multichannel Support


Ansys Lumerical MQW

Quantum Well Gain Simulation

  • Wavefunction Calculation
  • Band Diagram Calculation
  • Physics-Based Photonics Solver
  • Quantum Mechanical Analysis
  • Conduction Electron Scattering
  • Gain and Spontaneous Emission
  • Characterization of Band Structures
  • Multi-Quantum Well Stacks Simulator
  • Establish Controllable Quantum States
  • Mesoscopic Superconductivity Analysis


Ansys Lumerical Suite

Electronics Photonics Design Automation (EPDA)

  • Lumerical MODE
  • Lumerical CHARGE
  • Lumerical HEAT
  • Lumerical DGTD
  • Lumerical STACK
  • Lumerical FEEM
  • Lumerical MQW
  • Lumerical VERILOG-A
  • Lumerical INTERCONNECT
  • Lumerical CML COMPILER




Ansys Lumerical FEEM (Finite Element EigenMode) In-Action

Supporting Ansys Lumerical FEEM video materials showcasing  functionality, and practical photonic application.

Ansys Lumerical PIC Simulation
Eigenmode Expansion & Propagation
Electronics-Photonics Design Automation (EPDA)