{"id":365959,"date":"2024-05-08T02:27:39","date_gmt":"2024-05-08T02:27:39","guid":{"rendered":"\/forum\/forums\/topic\/comparison-of-eme-and-fdtds-trnasmission\/"},"modified":"2024-05-08T02:27:39","modified_gmt":"2024-05-08T02:27:39","slug":"comparison-of-eme-and-fdtds-trnasmission","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/comparison-of-eme-and-fdtds-trnasmission\/","title":{"rendered":"Comparison of EME and FDTD&#8217;s trnasmission"},"content":{"rendered":"<p>Hello everyone.<\/p>\n<p>I&#8217;m studying taper structures made of Silicon nitride.<\/p>\n<p>First, I conducted a simulation using the EME solver&rsquo;s propagation sweep at a wavelength of 1310 nm to find out the propagation loss of a SiN taper.<\/p>\n<p>The result was as follows: I got a length of 5 um (propagation loss = 0.945).&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/08-05-2024-1715133162-mceclip1.png\"><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/08-05-2024-1715132943-mceclip0.png\" width=\"458\" height=\"242\"><\/p>\n<p>Then, to compare it with the EME solver&rsquo;s propagation loss, I simulated the same structure(legnth = 5 um) using FDTD.&nbsp;<\/p>\n<p>At the wavelength of 1310 nm, I got a propagation loss of 0.999. I am curious why the data from the EME solver and FDTD are different.&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/08-05-2024-1715133252-mceclip3.png\"><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/08-05-2024-1715135150-mceclip4.png\" width=\"455\" height=\"344\"><\/p>\n<p>I believe the two simulations should produce the same data. If anyone has experience with this or knows about it, please respond.<\/p>\n<p>I can provide additional structural parameters if asked.<\/p>\n<p>&nbsp;<\/p>\n<p>Thanks,<\/p>\n<p>YOON.<\/p>\n","protected":false},"template":"","class_list":["post-365959","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["337142","2592"],"_bbp_author_ip":["23.192.127.5"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["204"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["365959"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","337142"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["366303"],"_bbp_last_active_id":["366303"],"_bbp_last_active_time":["2024-05-09 14:27:06"]},"test":"dbsminanhanyang-ac-kr"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/365959","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\/365959\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=365959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}