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Application Gallery

Lumerical's HEAT transport solver can be used simulate thermally and electrically driven heat transport in solid-state systems. The temperature map resulting from the heat transport simulation can be imported into Lumerical’s optical solvers, FEEM , MODE or FDTD to characterize the optical response, including changes to the effective index, phase and loss.


The workflow starts with heat transport simulations in HEAT. The temperature map near the waveguide region is converted into a spatially dependent refractive index, which can be used in the optical solvers to simulate the optical response.



Build a 3D model of your component design. Geometric data can be imported from a STL or GDSII mask file

Take advantage of the adaptive finite-element mesh to represent arbitrary geometries efficiently

Use predefined thermal and conductive material models, or customizing parametric models

Apply common thermal boundary conditions: uniform temperature/power, heat flux, convection or radiation

Simulate thermally and electrically driven heat transport in solid-state systems (both steady state and transient)

Calculate the local, spatially varying change in optical material properties through the thermo-optic effect and export that data for optical mode and propagation analysis in MODE or FDTD

Solve for optical mode profiles in waveguides, accounting for spatially-varying optical material properties imported from other solvers

Calculate the effective index and loss as a function of input power for modes in a thermally-tunable waveguide

Propagate light through devices such as waveguide-based Mach Zehnder interferometers or ring resonators, including tunable waveguide sections

Application examples

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