Guilin Sun
Ansys Employee

"active layer " , do you mean the orgaic material? for passive optical simulations, as long as you have material properties, such as refractive index or permittivity, you can import it into material database:   https://optics.ansys.com/hc/en-us/articles/360034915093-Creating-new-sampled-data-materials-in-FDTD

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