{"id":380865,"date":"2024-08-28T12:46:35","date_gmt":"2024-08-28T12:46:35","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-calculate-power-dissipation-spectra\/"},"modified":"2024-08-28T12:46:35","modified_gmt":"2024-08-28T12:46:35","slug":"how-to-calculate-power-dissipation-spectra","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-calculate-power-dissipation-spectra\/","title":{"rendered":"How to calculate power dissipation spectra ?"},"content":{"rendered":"

<p>In the OLED field, Power Dissipation Spectra are typically calculated using Python or dedicated tools. <br>Commonly used tools for this purpose include TechWiz from a different company or SETFOS from Fluxim, which can be used to obtain the Power Dissipation Spectra.<br> As shown in Figure 1, it is possible to observe air, substrate, WG, and SPP modes simply from the graph.<\/p><p>\"\"<\/p><p style=”text-align: center;”>Figure 1. Calculation results of TE- and TM-polarized power dissipation spectrum (The four regions of the air, substrate, WG, and SPP modes are marked in the different shaded colors of sky blue, gray, yellow, and pink.)<\/p><p>To find a similar feature in FDTD, I tried applying the example provided in the response at this link( https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/power-dissipation-spectra\/<\/a> ). <br>However, unlike the Python-calculated results shown in Figure 2(left python, right fdtd), I encountered the following issues with FDTD:<\/p><p>1.The intensity of the Dissipated Power is different.<\/strong><br>This issue seems to be due to an error in the formula used to calculate the Dissipated Power. <br>I am curious if there is a built-in function in FDTD that calculates this correctly.<\/p><p>2.Unable to calculate with normalized in-plane wavevector.<\/strong><br>When sweeping the Bloch boundary condition value \ud835\udc58 at each wavelength from 400 to 700 nm, the calculation is performed.<\/p><p>Afterward, I face difficulties in dividing the obtained k value by the wavelength to compute the normalized wavevector.<\/p><p>3. FDTD can only perform 1D calculations.<\/strong><br>The example from the link uses FDTD in 2D, but with one span dimension made extremely thin, effectively making it a 1D calculation. However, since we need to calculate the dissipated power with a nanostructure in the future, I am looking for a way to perform this calculation in 2D.<\/p><p>\"\"<\/p><p style=”text-align: center;”>Figure 2 .Dissipated Power Calculated by python (left) , by FDTD (right)<\/p><\/p>\n","protected":false},"template":"","class_list":["post-380865","topic","type-topic","status-publish","hentry","topic-tag-Bloch-1","topic-tag-fdtd","topic-tag-power"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t