{"id":383379,"date":"2024-09-20T21:20:10","date_gmt":"2024-09-20T21:20:10","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/discontinuity-at-the-boundary-of-the-substrate-and-waveguide-of-aln-on-sapphire\/"},"modified":"2024-09-20T21:20:10","modified_gmt":"2024-09-20T21:20:10","slug":"discontinuity-at-the-boundary-of-the-substrate-and-waveguide-of-aln-on-sapphire","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/discontinuity-at-the-boundary-of-the-substrate-and-waveguide-of-aln-on-sapphire\/","title":{"rendered":"Discontinuity at the boundary of the substrate and waveguide of AlN-on-sapphire"},"content":{"rendered":"<p>&lt;p&gt;Hi,&lt;\/p&gt;&lt;p&gt;when I was simulating the AlN strip waveguide on sapphire substrate, I noticed that there is a discontinuity at the bottom of the waveguide. I input only one refractive index of 369nm&nbsp; for the material. I would like to know what might cause the discontinuity. Thank you!&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/20-09-2024-1726866945-mceclip1.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-383379","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["153255","2592"],"_bbp_author_ip":["35.3.229.129"],"_btv_view_count":["115"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["383379"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","153255"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["387019"],"_bbp_last_active_id":["387019"],"_bbp_last_active_time":["2024-09-25 16:13:36"]},"test":"c99817f63de5a46b7cee3d7d4fd31a406bec7434"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/383379","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\/383379\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=383379"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}