Learning Forum

[Chieh Tsao]

Dear all,

Recently, I have been considering buying the Lumerical. I know that Lumerical is good at simulating waveguide stuff and the nonlinearity of waveguides. However, I am unsure if Lumerical is not good at analyzing metasurface with nonlinearity since many papers used COMSOL...

For example,

Spatially entangled photon pairs from lithium niobate nonlocal metasurfaces | Science Advances

Your insights and suggestions will help me determine if Lumerical is suitable for my work.

Thanks!

[Kyle]

Hello,

FDTD is a time domain method so it is able to simulate nonlinear effects. Lumerical has some built-in nonlinear materials available: Advanced and custom optical material models in FDTD and MODE – Ansys Optics

Here are some examples of simulations using nonlinear materials: Nonlinear optics - list of examples – Ansys Optics

However, simulations with nonlinear materials tend to be more complicated than simulations with only linear materials. Some of the challenges are discussed here: Nonlinear and gain methodology – Ansys Optics