Shashank Gupta

Thank you for your reply. I have defined the permitivity of the crystal in  lumerical Device and imported the electric field data into Mode. To get the neff value change with the change in voltage, I defined the electro optic tensor of my material as done in ferroelectric modulator example (Ferroelectric modulator – Ansys Optics).

But to perform the simulation in FDTD, I need (n,k) values and variation of values with voltage. How to utilize the data generated above in FDTD to define the material?

As you have mentioned that, for electro-optic crystal which has refractive index change with voltage, I need to create series of material in material data base, how to do that? In the link you shared all materials defined have (n,k) with respect to wavelength.