{"id":345124,"date":"2024-01-17T13:07:00","date_gmt":"2024-01-17T13:07:00","guid":{"rendered":"\/forum\/forums\/topic\/how-to-simulate-the-phase-shifted-bragg-grating-in-3d-fdtd\/"},"modified":"2024-01-17T13:07:00","modified_gmt":"2024-01-17T13:07:00","slug":"how-to-simulate-the-phase-shifted-bragg-grating-in-3d-fdtd","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-simulate-the-phase-shifted-bragg-grating-in-3d-fdtd\/","title":{"rendered":"How to simulate the phase-shifted bragg grating in 3D FDTD?"},"content":{"rendered":"<p>Hello, everyone.<\/p>\n<p>I have constructed the phase-shifted bragg grating following the paper and compared two transmissions between my 3D FDTD result and the paper&#8217;s result.<\/p>\n<p>However, there are some differences between the two data, which show no peak and weak reflection intensity.&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/17-01-2024-1705495565-mceclip0.png\" width=\"475\" height=\"283\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/17-01-2024-1705495602-mceclip1.png\"><\/p>\n<p>Although I match the object parameters with the paper&#8217;s parameters, I think that the FDTD region and monitor\/source location are the matter. But, when I reduced the number of periods to 50 and 100, it was weird to show a peak, unlike the conventional one which is 250.<\/p>\n<p>So, let&#8217;s look at my simulation setting.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/17-01-2024-1705496530-mceclip2.png\" width=\"423\" height=\"265\"> &nbsp; <img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/17-01-2024-1705496607-mceclip4.png\" width=\"411\" height=\"257\"><\/p>\n<p>The first image is the input region and the other is the output region. I rerun the simulation by increasing the simulation time and mesh accuracy due to the simulation status 1.<\/p>\n<p>Is there any check point in my simulation setting?<\/p>\n<p>I would be grateful if anyone could advise me on some solutions.<br \/>Thank you<\/p>\n","protected":false},"template":"","class_list":["post-345124","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["276558","2796"],"_bbp_author_ip":["168.143.243.24"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["538"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["345124"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2796","276558"],"_bbp_voice_count":["2"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["346587"],"_bbp_last_active_id":["346587"],"_bbp_last_active_time":["2024-01-25 12:24:15"]},"test":"ddol410hanyang-ac-kr"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/345124","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\/345124\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=345124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}