{"id":298250,"date":"2023-08-04T18:41:59","date_gmt":"2023-08-04T18:41:59","guid":{"rendered":"\/forum\/forums\/reply\/298250\/"},"modified":"2023-08-04T18:41:59","modified_gmt":"2023-08-04T18:41:59","slug":"298250","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/298250\/","title":{"rendered":"Reply To: Interconnect simulation_TWLM and CWL affect each other."},"content":{"rendered":"<p>&lt;p&gt;Hello, in time domain simulations, the optical signals have a carrier frequency called the channel frequency. When you have two sources, the channel frequency will be the average of the source frequencies. So when you change the CWL frequency, the carrier frequency changes. The TWLM model might change with a different channel frequency, which is why the TWLM behaviour is changing.&nbsp;&lt;\/p&gt;&lt;p&gt;You can keep the channel frequency fixed by changing the &#8220;sample mode frequency band&#8221; property of the Root Element to &#8220;single&#8221; then manually selecting the channel frequency with the &#8220;sample mode center frequency&#8221; property:&lt;br&gt;&lt;br&gt;<img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/08\/04-08-2023-1691174441-mceclip0.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-298250","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=\"Hello, in time domain simulations, the optical signals have a carrier frequency called the channel frequency. When you have two sources, the channel frequency will be the average of the source frequencies. So when you change the CWL frequency, the carrier frequency changes. The TWLM model might change with a different channel frequency, which is\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/298250\/\" \/>\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: Interconnect simulation_TWLM and CWL affect each other. | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello, in time domain simulations, the optical signals have a carrier frequency called the channel frequency. When you have two sources, the channel frequency will be the average of the source frequencies. 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When you have two sources, the channel frequency will be the average of the source frequencies. So when you change the CWL frequency, the carrier frequency changes. 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