{"id":368913,"date":"2024-05-28T07:42:03","date_gmt":"2024-05-28T07:42:03","guid":{"rendered":"\/forum\/forums\/topic\/mode-strange-mode-result-from-fde-solver\/"},"modified":"2024-05-28T07:57:57","modified_gmt":"2024-05-28T07:57:57","slug":"mode-strange-mode-result-from-fde-solver","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mode-strange-mode-result-from-fde-solver\/","title":{"rendered":"MODE: Strange mode result from FDE solver"},"content":{"rendered":"<p class=\"MsoNormal\"><span lang=\"EN-US\">Hello,<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">I am using Lumerical MODE with an FDE solver to find guided modes in a bent waveguide.<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">After upgrading to Lumerical Version 2024 R1.1, I encounter a strange issue. Sometimes findmodes gives me an output like this:&nbsp; <\/span><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/28-05-2024-1716881341-strangeModeResult.PNG\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/28-05-2024-1716881341-strangeModeResult.PNG\" alt=\"\"><\/a><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">In this case, findmodes returns the maximum number of modes it is set to find with all modes looking like this.<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">That happens however inconsistently. If I run my script again without changing anything (e.g. setup, solver settings, &hellip;), I might find the correct modes or obtain the same strange result again. <\/span><span lang=\"EN-US\">The same error appears also in<\/span><span lang=\"EN-US\"> older Lumerical MODE scripts that run reliable on <\/span><span lang=\"EN-US\">previous versions before and on different machines.<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">Does anyone know why this error occurs and how it can be fixed?<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">Thank you for your help.&nbsp;<\/span><\/p>\n","protected":false},"template":"","class_list":["post-368913","topic","type-topic","status-closed","hentry","topic-tag-FDE-1","topic-tag-MODE-1","topic-tag-waveguide-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["342189","33648"],"_bbp_author_ip":["23.216.133.155"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1158"],"_bbp_topic_status":["unanswered"],"_edit_lock":["1716882616:293379"],"_bbp_topic_id":["368913"],"_bbp_forum_id":["27833"],"_bbp_engagement":["33648","342189"],"_bbp_voice_count":["2"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["369831"],"_bbp_last_active_id":["369831"],"_bbp_last_active_time":["2024-06-04 17:12:33"]},"test":"henrick-hoellereruni-jena-de"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/368913","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":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/368913\/revisions"}],"predecessor-version":[{"id":368916,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/368913\/revisions\/368916"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=368913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}