{"id":430308,"date":"2025-04-29T08:49:13","date_gmt":"2025-04-29T08:49:13","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-simulate-photonic-crstyal-devices-correctly\/"},"modified":"2025-04-29T14:05:30","modified_gmt":"2025-04-29T14:05:30","slug":"how-to-simulate-photonic-crstyal-devices-correctly","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-simulate-photonic-crstyal-devices-correctly\/","title":{"rendered":"How to simulate photonic crstyal devices correctly."},"content":{"rendered":"<p>&lt;p class=&#8221;ds-markdown-paragraph&#8221;&gt;I am using Lumerical FDTD software to simulate the coupling between a photonic crystal ring resonator and a photonic crystal waveguide. During the simulation, I encountered the following issues:&lt;\/p&gt;<\/p>\n<ol start=\"1\">\n<li>&lt;p class=&#8221;ds-markdown-paragraph&#8221;&gt;The size of the simulation region affects my results. How should I determine the appropriate simulation region size to ensure reliable results?&lt;\/p&gt;<\/li>\n<li>&lt;p class=&#8221;ds-markdown-paragraph&#8221;&gt;For photonic crystal device simulations, is it necessary to have an integer number of mesh cells per lattice constant to ensure identical mesh partitioning for each periodic unit?&lt;\/p&gt;<\/li>\n<li>&lt;p class=&#8221;ds-markdown-paragraph&#8221;&gt;The TE mode in slab photonic crystals is defined as having the electric field oscillating parallel to the plane of periodicity and the magnetic field with a component perpendicular to that plane. This seems different from the TE mode definition in waveguides. Can a TE mode source still excite the TE mode of the microcavity?&lt;\/p&gt;<\/li>\n<\/ol>\n<p>&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/04\/29-04-2025-1745916538-mceclip1.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-430308","topic","type-topic","status-closed","hentry","topic-tag-Photoniccrystal-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27833"],"_bbp_topic_id":["430308"],"_bbp_subscription":["493496","473055"],"_bbp_author_ip":["2001:250:4000:4193:e90c:86d0:f93:1752"],"_bbp_last_reply_id":["430340"],"_bbp_last_active_id":["430340"],"_bbp_last_active_time":["2025-04-29 14:05:24"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["493496","473055"],"_btv_view_count":["344"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"]},"test":"m202473519hust-edu-cn"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/430308","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\/430308\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=430308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}