{"id":424405,"date":"2025-03-05T11:04:02","date_gmt":"2025-03-05T11:04:02","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/exporting-inverse-design-of-a-grating-to-gds\/"},"modified":"2025-03-05T11:04:02","modified_gmt":"2025-03-05T11:04:02","slug":"exporting-inverse-design-of-a-grating-to-gds","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/exporting-inverse-design-of-a-grating-to-gds\/","title":{"rendered":"Exporting Inverse Design of a Grating to GDS"},"content":{"rendered":"<p>&lt;p&gt;I&#8217;ve been following the online tutorial for the development of a grating coupler using inverse design: <a href=\"https:\/\/optics.ansys.com\/hc\/en-us\/articles\/360042800573-Inverse-Design-of-Grating-Coupler-2D\">Inverse Design of Grating Coupler (2D) &ndash; Ansys Optics<\/a> I&#8217;ve been through editing everything to suit my design but when it comes to the last step of exporting to GDS, it doesn&#8217;t seem to work. The GDS created gives the error pictures. I retried using the unchanged example and get the same issue with Klayout. I&#8217;ve tried importing the GDS back through Lumerical, and tried a different GDS software, no luck on either.&nbsp; Any idea&#8217;s what&#8217;s going wrong?&nbsp; Thanks.&nbsp; <img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/03\/05-03-2025-1741172624-mceclip0.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-424405","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27833"],"_bbp_topic_id":["424405"],"_bbp_subscription":["525206","443894"],"_bbp_author_ip":["131.251.8.162"],"_bbp_last_reply_id":["424597"],"_bbp_last_active_id":["424597"],"_bbp_last_active_time":["2025-03-06 18:27:41"],"_bbp_reply_count":["3"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["525206","443894"],"_btv_view_count":["159"],"_bbp_topic_status":["unanswered"]},"test":"kielyocardiff-ac-uk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/424405","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\/424405\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=424405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}