{"id":281034,"date":"2023-04-25T00:16:54","date_gmt":"2023-04-25T00:16:54","guid":{"rendered":"\/forum\/forums\/topic\/simulation-of-high-order-dfb-laser-in-interconnect\/"},"modified":"2023-04-25T00:16:54","modified_gmt":"2023-04-25T00:16:54","slug":"simulation-of-high-order-dfb-laser-in-interconnect","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/simulation-of-high-order-dfb-laser-in-interconnect\/","title":{"rendered":"Simulation of high-order DFB laser in Interconnect"},"content":{"rendered":"<p>Hi, I&#8217;m designing a DFB laser using TWLM model in Interconnect. For the first-order grating, I set the period equal to ~200 nm and get very good results:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/04\/25-04-2023-1682381607-mceclip0.png\" width=\"473\" height=\"172\"><\/p>\n<p>I want to see the result of a third-order grating, meaning the pitch is now ~600 nm. I&#8217;m expecting to see a single-mode behaviour just like above, with maybe smaller SMSR. But the result is as below:<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/04\/25-04-2023-1682381694-mceclip1.png\"><\/p>\n<p>It doesn&#8217;t see the grating and acts as a FP laser. How can I make sure high-order DFB is defined properly in Interconnect?<\/p>\n","protected":false},"template":"","class_list":["post-281034","topic","type-topic","status-closed","hentry","topic-tag-BraggGrating-1","topic-tag-interconnect","topic-tag-laser"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["259789","185544"],"_bbp_author_ip":["168.143.243.24"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["456"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["281034"],"_bbp_forum_id":["27833"],"_bbp_engagement":["185544","259789"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["281509"],"_bbp_last_active_id":["281509"],"_bbp_last_active_time":["2023-04-27 22:04:15"]},"test":"ssaei014uottawa-ca"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/281034","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\/281034\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=281034"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}