{"id":304688,"date":"2023-09-03T09:36:30","date_gmt":"2023-09-03T09:36:30","guid":{"rendered":"\/forum\/forums\/topic\/obtaining-s-parameters-for-metasurface-in-fdtd\/"},"modified":"2023-09-03T09:36:30","modified_gmt":"2023-09-03T09:36:30","slug":"obtaining-s-parameters-for-metasurface-in-fdtd","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/obtaining-s-parameters-for-metasurface-in-fdtd\/","title":{"rendered":"Obtaining S-parameters for metasurface in FDTD"},"content":{"rendered":"<p>I am trying to obtain complex reflection (r) and transmission (t) coefficients for both s and p polarization at normal incident for a metasurface design consisting of Au\/Al2O3\/Au. I understand from theory that R and T are equal for both s and p polarisations at normal incident . My questions are: 1) Is S-parameters for s and p polarization at normal incident the same? 2) If no, how can I adjust my simulation setting for s and p polarization so as to extract the accurate values for the S parameters (S11 and S21 or S22 and S12). Thanks while I await your response.<\/p>\n","protected":false},"template":"","class_list":["post-304688","topic","type-topic","status-closed","hentry","topic-tag-LumericalFDTD-1","topic-tag-polarization","topic-tag-s-parameter-1","topic-tag-scattering"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["255711","2592"],"_bbp_author_ip":["96.7.74.191"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["911"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["304688"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","255711"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["305366"],"_bbp_last_active_id":["305366"],"_bbp_last_active_time":["2023-09-07 18:02:30"]},"test":"a-odebowaleadfa-edu-au"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/304688","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/304688\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=304688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}