{"id":392322,"date":"2024-10-31T20:52:17","date_gmt":"2024-10-31T20:52:17","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/392322\/"},"modified":"2024-10-31T20:52:17","modified_gmt":"2024-10-31T20:52:17","slug":"392322","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/392322\/","title":{"rendered":"Reply To: Help in bandstructure simulation"},"content":{"rendered":"

<p> “updating slab modes” is just a reminder message. No worry about it.<\/p><p>”Gamma-X sweep from 0-1 ” it sould be from 0 to 0.5 since it is folded.<\/p><p>I would suggest you to continue using 3D FDTD as 2D varFDTD might not be that accurate.<\/p><p>I guess there are some unwanted frequency points on the “bands”. Usually it means the simulation time needs to be a little bit long. But it cannot be too long to reach autsohutoff min default value of 1e-5. Otherwise the bands will have some missing points.<\/p><p>You may need to use symmetry-type of BCs to separate TE\/TM modes if the structure has some symmetry: https:\/\/optics.ansys.com\/hc\/en-us\/articles\/360034382694-Symmetric-and-anti-symmetric-BCs-in-FDTD-and-MODE <\/p><p>Other factors please read this post: <\/p><p class=”MsoNormal”>Ansys Insight: Why my simulation result is different from published paper or experiment?<\/a><\/p><\/p>\n","protected":false},"template":"","class_list":["post-392322","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t