{"id":311469,"date":"2023-10-13T22:41:07","date_gmt":"2023-10-13T22:41:07","guid":{"rendered":"\/forum\/forums\/topic\/lumopt-and-temperature-dependence\/"},"modified":"2023-10-13T22:41:07","modified_gmt":"2023-10-13T22:41:07","slug":"lumopt-and-temperature-dependence","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/lumopt-and-temperature-dependence\/","title":{"rendered":"Lumopt and temperature dependence"},"content":{"rendered":"<p>Hello,<\/p>\n<p>I&#8217;m looking to optimize a device, using Lumopt&#8217;s topology optimization, that is intended to operate at two different temperatures. I tried doing so by defining two different geometries (TopologyOptimization2D objects) in the Lumopt script that have different refractive indices for the background and waveguide materials. In addition, I added separate optimizations with different refractive indices for the background and waveguides.<\/p>\n<p>However, the resulting device had very poor simulated performance which was significantly worse than a device that had not been optimized for temperature at all. In addition, I noticed that the final value of the refractive index for the higher temperature (and higher refractive index) device was lower than the refractive index implied by the waveguide permittivity set in the geometry definition.<\/p>\n<p>&nbsp;<\/p>\n<p>Is there a working method to optimize a device for more than one temperature in Lumopt?<\/p>\n","protected":false},"template":"","class_list":["post-311469","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello,I&#039;m looking to optimize a device, using Lumopt&#039;s topology optimization, that is intended to operate at two different temperatures. I tried doing so by defining two different geometries (TopologyOptimization2D objects) in the Lumopt script that have different refractive indices for the background and waveguide materials. In addition, I added separate optimizations with different refractive indices\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/lumopt-and-temperature-dependence\/\" \/>\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=\"Lumopt and temperature dependence | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello,I&#039;m looking to optimize a device, using Lumopt&#039;s topology optimization, that is intended to operate at two different temperatures. 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I tried doing so by defining two different geometries (TopologyOptimization2D objects) in the Lumopt script that have different refractive indices for the background and waveguide materials. 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