October 5, 2023 at 6:17 amAnindya BoseSubscriber
Using the index perturbation model (Link: https://optics.ansys.com/hc/en-us/articles/360034901753-np-Density-and-Temperature-Index-Perturbation-Simulation-object) we can get the plot of the real part of refractive index (n) as a function of electrical power for any defined materials. Can we get the imaginary part of the refractive index (k) of the same material as a function of electrical power? Is there any available feature to do such a thing in FEEM or mode solver? Any help in this regard will be highly appreciated.
Thanks and regards,
October 5, 2023 at 5:13 pmGuilin SunAnsys Employee
Do you mean the material index with perturbation, or the effective index of the mode?
The conversion theory is here https://optics.ansys.com/hc/en-us/articles/360034382494-Charge-distribution-to-change-in-refractive-index-theory
So if the charges are uniform, you can get the perturbated material complex refractive index:
If the np density is simulated from CHARGE, it is not uniform then you cannot import or get the refractive index perturbation.
However when the np density is applied to a waveguide, and you use FDE or FEEM you will be able to get the mode effective index, real and imaginary parts.
October 6, 2023 at 4:59 pmAnindya BoseSubscriber
Dear Mr Guilin Sun,
Thank you so much for your comment. I was just asking for the mode effective index during waveguide simulation only (using the np density feature).In my case, I am only able to see the real part of neff vs Voltage plot. Is there any way to see its imaginary part?
Thanks and regards,
October 6, 2023 at 5:36 pmGuilin SunAnsys Employee
Once you get neff from FDE you will be able to plot imag(neff) using script.
Please first check if the neff has nonzero imaginary part.
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