{"id":358059,"date":"2024-03-20T04:50:21","date_gmt":"2024-03-20T04:50:21","guid":{"rendered":"\/forum\/forums\/topic\/query-regarding-the-way-to-shift-an-optical-spectrum\/"},"modified":"2024-03-20T04:50:21","modified_gmt":"2024-03-20T04:50:21","slug":"query-regarding-the-way-to-shift-an-optical-spectrum","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/query-regarding-the-way-to-shift-an-optical-spectrum\/","title":{"rendered":"Query regarding the way to shift an optical spectrum"},"content":{"rendered":"<p>Dear Mr Guilin Sun,<\/p>\n<p>I have been trying to simulate a medium with varrying refractive indices in FDTD and as per rule whenever I change the refractive index of a medium then it will introduce a shift in the source spectrum and I need to see that by placing monitors in both side of the medium.The first monitor will measure the source spectrum (frequency domain) before entering light into the medium and the second monitor will measure the spectrum of light coming out of the slab.Now if I continuous change the refractive index of the medium then by principle it should introduce a phase shift and as a consequence the shift in frequency spectrum may be observed by using these two monitors.What would be the best parameter or monitor to observe the shift in spectrum?Is it the transmission spectrum that may satisfy my need or I need to use a time monitor?I need a suggestion from you in this regard.I will be waiting for your response.<\/p>\n<p>Thanks and regards,<\/p>\n<p>Anindya Bose<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-358059","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=\"Dear Mr Guilin Sun,I have been trying to simulate a medium with varrying refractive indices in FDTD and as per rule whenever I change the refractive index of a medium then it 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