{"id":386354,"date":"2024-09-24T11:45:56","date_gmt":"2024-09-24T11:45:56","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-simulate-the-loss-of-bend-waveguide\/"},"modified":"2024-09-24T11:45:56","modified_gmt":"2024-09-24T11:45:56","slug":"how-to-simulate-the-loss-of-bend-waveguide","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-simulate-the-loss-of-bend-waveguide\/","title":{"rendered":"how to simulate the loss of bend waveguide?"},"content":{"rendered":"<p>&lt;p&gt;Hi, I am currently reproducing a plot from a research paper that illustrates the relationship between bending loss and bending radius.&lt;\/p&gt;&lt;p&gt;I have tried to simulate bend loss several times, but the results displayed are not good, first I simulated in the FEEM. Typically, bending loss is expected to decrease with an increase in bending radius. However, the simulation results I obtained are not consistent with this expectation; instead of a smooth curve, they form a piecewise linear graph, and the values of bending loss are uncharacteristically low. It appears that there may be an issue, but I am unsure how to proceed with improvements.&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/24-09-2024-1727173481-mceclip1.png\" \/>&lt;\/p&gt;&lt;p&gt;And there are some other issues. When I follow the link <a href=\"https:\/\/optics.ansys.com\/hc\/en-us\/articles\/4409707153811-Bent-Waveguide-FEEM\">Bent Waveguide (FEEM) &ndash; Ansys Optics<\/a>,&nbsp;change the width and thickness of the waveguide and make corresponding changes to the simulation area, I always encounter the error as shown in the figure below, what can I do to resolve this problem?&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/24-09-2024-1727178149-mceclip2.png\" \/>&lt;\/p&gt;&lt;p&gt;Then I used FDE to simulate again, the result is below. You can see that the loss is still so small! What has led to this situation?&lt;\/p&gt;&lt;p&gt;Could you please offer some suggestions? Thank you very much\uff01&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/24-09-2024-1727172740-mceclip0.png\" \/>&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-386354","topic","type-topic","status-publish","hentry","topic-tag-bendingloss-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["438269","2592"],"_bbp_author_ip":["202.197.37.153"],"_btv_view_count":["261"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["386354"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","438269"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["387024"],"_bbp_last_active_id":["387024"],"_bbp_last_active_time":["2024-09-25 17:49:38"]},"test":"a15ce5430abdf9961861d8d2706964f47bb14a88"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/386354","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\/386354\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=386354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}