Re: [Meep-discuss] Question about how to set background refractive index

You can use the default_material parameter of the Simulation object, for example. > On Jun 19, 2020, at 2:29 PM, Siwei Zeng wrote: > > Hi, > > I am a new player in Meep. Recently I try to simulate the transmission of > silicon nitride directional coupler. The waveguide core material I use is

[Meep-discuss] Question about how to set background refractive index

Hi, I am a new player in Meep. Recently I try to simulate the transmission of silicon nitride directional coupler. The waveguide core material I use is silicon nitride. The waveguide cladding material is silicon dioxide. I have checked the directional coupler example(