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Photonics

Photonics

Topics related to Lumerical and more.

How to add substances with Pockels effect from FDTD

    • youjin na
      Subscriber

      I would like to add a material with nonlineal electrical properties. I would like to apply the χ 2 value that affects the Pockels effect, can this be realized through the code in FDTD? I would appreciate it if you could show me the example code.

    • Kyle
      Ansys Employee

      There is a Chi2 material built-in to FDTD, however this is not used for simulating the Pockels effect since we can't create a DC field in FDTD. Instead, you can calculate the static E fields, calculate the refractive index as a function of position based on the E field, then import this index data into FDTD to do your simulation. You can use the spatial (n,k) material object for this:

      Spatial (n,k) data - Simulation object – Ansys Optics

      There is an example of a similar workflow here, for FEEM instead of FDTD:

       Thin Film Lithium Niobate Electro-Optic Phase Modulator – Ansys Optics

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