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Ansys Lumerical FEEM
Finite Element Waveguide Simulator

Ansys Lumerical FEEM offers a finite element Maxwell’s solver based on the Eigenmode method that is well suited for accurate analysis of waveguide modes for complex geometries.

Quick Specs

Lumerical FEEM provides superior accuracy and performance scaling with a finite element Maxwell’s solver based on the Eigenmode method. Calculate the modes supported by the 2D cross-section of waveguides or fibers in the frequency domain

  • Higher Order Mesh Polynomials
  • Waveguide Thermal Sensitivity Tuning
  • Higher-order Polynomial Basis Functions
  • Solve in the Frequency Domain
  • Spatially Varying Index Perturbations
  • Automatic Mesh Refinement
  • Determine Effective Index
  • Electro-Optic/Thermo-Optic Modeling
  • Material-adaptive mesh

What's New

The 2021 R2 release delivers new Ansys Lumerical FEEM capabilities for improving simulation accuracy:

Anisotropic material support
Anisotropic Material Support

Ansys FEEM now includes support for diagonal anisotropy.

PML Boundary Conditions
PML Boundary Conditions

Find modes of leaky waveguides and fibers with PML boundary conditions in the finite element eigensolver (FEEM).

Resources

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Webinar

Ansys Lumerical’s Component Level Tools

This webinar will start with an overview of the broad set of component level solvers it offers with an emphasis on FDTD and MODE. It will then show how these solvers can be used to simulate and optimize novel designs in a wide range of applications including micro-LEDs, augmented reality, magneto-optics and lasers.

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Application

Thermally tuned waveguide (FEEM)

In this example, we will characterize the optical response of a thermally tuned waveguide. 

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Application

Graded-index fiber with FEEM

This example shows how to use the FEEM to calculate the characteristic modes of a graded-index fiber

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Case Study

Xanadu

Xanadu builds X8 quantum computing chip with unprecedented low-loss performance while significantly accelerating their design schedule.

CAPABILITIES

Lumerical FEEM is a Finite Element Waveguide Mode Solver

Lumerical FEEM’s material-adaptive finite element mesh and higher-order polynomial basis functions make it well suited for accurate analysis of waveguide models in complex geometries and materials. Solve curved waveguide geometries or thermal waveguide tuning. Perform multiphysics simulations with electro-optic and thermo-optic modeling, enabled by interoperability the Lumerical CHARGE and HEAT solvers, respectively. 

ansys lumerical feem

 

Key Features

  • Perform Multiphysics Simulations
  • Comprehensive Materials Models 
  • Finite Element IDE

Ansys Lumerical FEEM, in conjunction with other Lumerical solutions, provides a variety of multiphysics simulations:

  • Electro-optic (CHARGE & FEEM)
  • Opto-thermal (FEEM & HEAT)

Lumerical FEEM utilizes a flexible visual database, with multi-coefficient broadband optical material models and scriptable material properties.

  • 2D modeling
  • Import STL, GDSII, and STEP
  • Parameterizable simulation objects
  • Domain partitioned solids for easy property definition

Application Gallery

View all Photonics Applications

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Application

Thermally tuned waveguide (FEEM)

In this example, we will characterize the optical response of a thermally tuned waveguide.

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Application

Graded-index fiber with FEEM

This example shows how to use the FEEM to calculate the characteristic modes of a graded-index fiber.



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FEEM Product Reference Manual

The Finite Element EigenMode (FEEM) reference manual provides detailed descriptions of product features.

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CompoundTek

Using Lumerical’s PID flow on AWS EC2, new SiPh grating couplers were developed with a footprint 20x smaller than CompoundTek’s existing coupler and with predicted improvements in performance. 

Ansys software is accessible

It's vital to Ansys that all users, including those with disabilities, can access our products. As such, we endeavor to follow accessibility requirements based on the US Access Board (Section 508), Web Content Accessibility Guidelines (WCAG), and the current format of the Voluntary Product Accessibility Template (VPAT).

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