{"id":246088,"date":"2023-01-10T16:51:09","date_gmt":"2023-01-10T16:51:09","guid":{"rendered":"\/forum\/forums\/topic\/how-to-calculate-bending-loss-using-3d-fdtd-simulation\/"},"modified":"2023-10-22T22:04:47","modified_gmt":"2023-10-22T22:04:47","slug":"how-to-calculate-bending-loss-using-3d-fdtd-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-calculate-bending-loss-using-3d-fdtd-simulation\/","title":{"rendered":"how to calculate bending loss using 3D FDTD simulation"},"content":{"rendered":"<p>I want to calculate the losses of a curved waveguide.<br \/>After defining the source, I have defined the monitors to give the transmission coefficient at different sections of the curved structure.<br \/>The power I get from the monitor placed at the end of the bend is negative and is of the order of e-41 and also has an imaginary part (see screenshot).<br \/>Is this a programming error?&nbsp;<br \/>How can I deduce the losses from the complex powers I get at the end?<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/01\/10-01-2023-1673369420-ansys.png\" alt=\"\"><\/p>\n<p>Thank you in advance.<\/p>\n","protected":false},"template":"","class_list":["post-246088","topic","type-topic","status-closed","hentry","topic-tag-photonics"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["272327","2592","287138"],"_bbp_author_ip":["23.56.168.190"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1882"],"_bbp_status":["publish"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["246088"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","272327","287138"],"_bbp_voice_count":["3"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["312746"],"_bbp_last_active_id":["312746"],"_bbp_last_active_time":["2023-10-22 22:04:37"]},"test":"loic-feukamtakoundjou-etuuniv-lille-fr"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/246088","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\/246088\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=246088"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}