Reply To: Grating coupler tooth simulation with bloch boundaries

[Dimitris Polyzos]

Hello Hrishikesh, Thanks for your reply and sharing your model. As I suggested in a previous post of mine, I would recommend to extend the span of the source through the FDTD simulation boundaries. Please refer to the following articles: https://optics.ansys.com/hc/en-us/articles/360034382874-Understanding-field-truncation-issues-with-finite-sized-plane-wave-sources. https://optics.ansys.com/hc/en-us/articles/360034382854-Plane-wave-and-beam-source-Simulation-object I hope I helped. Please let me know if you need further assistance. Kind regards Dimitris