My structure is a vertical nanowire photodetector on top of a SOI waveguide (see screenshot). I am currently working on the coupling between the waveguide and the nanowire.I already know all the modes allowed in both structures. I am trying to use the overlap function to match the polarization in both structures (by changing the geometry), but since this is non directional coupling i don’t know how to use the overlap function. do you guys have any idea how to proceed?
Thanks in advance