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Ansys Learning Forum › Forums › Discuss Simulation › Photonics › Electrostatic simulations of a modulator › Reply To: Electrostatic simulations of a modulator

October 31, 2024 at 10:53 pm
Ruzan Sokhoyan
Subscriber

Regarding the example you mentioned  https://optics.ansys.com/hc/en-us/articles/360042327854-PIN-Mach-Zehnder-modulator, if I run the file, the electric field distribution is symmetric. 

 

However, if I model the silicon pad under the electrodes as a dielectric with the same DC permittivity, the electric field becomes asymmetric

Why is that the case?