{"id":396314,"date":"2024-12-04T18:26:23","date_gmt":"2024-12-04T18:26:23","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/396314\/"},"modified":"2024-12-04T18:26:23","modified_gmt":"2024-12-04T18:26:23","slug":"396314","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/396314\/","title":{"rendered":"Reply To: How to understand the loss in MODE Eigensolver analysis mode list"},"content":{"rendered":"<p>&lt;p&gt;Hi Leroy,&lt;\/p&gt;&lt;p&gt;I think the simplest reason could be that material you are using in your simulation is lossless, however the material could have an imaginary part of the refractive index in reality, contributing to the material absorption\/propagation loss. We always recommend checking the &#8220;Material Explorer&#8221; before running the simulation to make sure that correct values of the real and the imaginary part of permittivity\/index are being used by FDE.&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/04-12-2024-1733336765-mceclip0.png\" width=\"554\" height=\"499\" \/>&lt;\/p&gt;&lt;p&gt;We also recommend performing convergence testing to cnfirm the accuracy of different results including the losses. But I will recommend checking the material properties first and then we can talk about convergence testing.&lt;\/p&gt;&lt;p&gt;Regards,&lt;br&gt;Amrita&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-396314","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi Leroy,I think the simplest reason could be that material you are using in your simulation is lossless, however the material could have an imaginary part of the refractive index in reality, contributing to the material absorption\/propagation loss. We always recommend checking the &quot;Material Explorer&quot; before running the simulation to make sure that correct values\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/396314\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: How to understand the loss in MODE Eigensolver analysis mode list | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi Leroy,I think the simplest reason could be that material you are using in your simulation is lossless, however the material could have an imaginary part of the refractive index in reality, contributing to the material absorption\/propagation loss. We always recommend checking the &quot;Material Explorer&quot; before running the simulation to make sure that correct values\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/396314\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-12-04T18:26:23+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-12-04T18:26:23+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: How to understand the loss in MODE Eigensolver analysis mode list | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hi Leroy,I think the simplest reason could be that material you are using in your simulation is lossless, however the material could have an imaginary part of the refractive index in reality, contributing to the material absorption\/propagation loss. 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We always recommend checking the &quot;Material Explorer&quot; before running the simulation to make sure that correct values","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/396314\/","article:published_time":"2024-12-04T18:26:23+00:00","article:modified_time":"2024-12-04T18:26:23+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: How to understand the loss in MODE Eigensolver analysis mode list | Ansys Learning Forum","twitter:description":"Hi Leroy,I think the simplest reason could be that material you are using in your simulation is lossless, however the material could have an imaginary part of the refractive index in reality, contributing to the material absorption\/propagation loss. 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