{"id":387369,"date":"2024-09-28T14:48:06","date_gmt":"2024-09-28T14:48:06","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/compare-effects-of-using-constant-real-index-vs-a-detailed-material-index\/"},"modified":"2024-09-28T14:48:06","modified_gmt":"2024-09-28T14:48:06","slug":"compare-effects-of-using-constant-real-index-vs-a-detailed-material-index","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/compare-effects-of-using-constant-real-index-vs-a-detailed-material-index\/","title":{"rendered":"Compare effects of using constant real index vs a detailed material index"},"content":{"rendered":"<p>&lt;p&gt;Greetings,&lt;\/p&gt;&lt;p&gt;I am comparing effects of using constant real index vs a detailed material index for lnP on optical properties in Ansys FDTD. I am still new to Lumerical so I am hoping to get some some guidance for this. What are the steps to simulate the lnP layer using both a constant index and dispersive index from the material database.I attached pics of my design and current plot. Any advice in doing this is very welcome.&nbsp;&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/28-09-2024-1727534745-FDTD b.PNG\" alt=\"\" width=\"576\" height=\"329\" \/>&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/28-09-2024-1727534797-FDTD a.PNG\" alt=\"\" width=\"590\" height=\"537\" \/>&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/28-09-2024-1727534842-FDTD c.PNG\" alt=\"\" width=\"594\" height=\"546\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-387369","topic","type-topic","status-publish","hentry","topic-tag-LumericalFDTD-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["458274","2592"],"_bbp_author_ip":["2600:8800:2488:5a00:78f3:9463:4424:dd1f"],"_btv_view_count":["104"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["387369"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","458274"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["387856"],"_bbp_last_active_id":["387856"],"_bbp_last_active_time":["2024-10-02 17:25:44"]},"test":"jiglesi1asu-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/387369","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\/387369\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=387369"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}