{"id":358888,"date":"2024-03-25T21:24:10","date_gmt":"2024-03-25T21:24:10","guid":{"rendered":"\/forum\/forums\/reply\/358888\/"},"modified":"2024-03-25T21:24:10","modified_gmt":"2024-03-25T21:24:10","slug":"358888","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358888\/","title":{"rendered":"Reply To: Information regarding the measurement of Phase spectrum in FDTD"},"content":{"rendered":"

<p>I am not quite sure what exactly you want to get. you want to get “phase spectrum as a funtion of refractive index”? usually the phase and the refractive index is a function of frequency or wavelength. Since both can be nonlinear and monotonically change, I am not sure if you can use refractive index as the absissa. Once you get both of them as a function of frequency\/wavelength, you could try to plot phase as a function of refractive index (most likely the real part).<\/p><p>probably you can sweep refractive index, could you later find a material with specified reftractive index as the function of frequency?<\/p><p>If you want to see the map of phase vs frequency and swept refrative index, you can image them:<\/p><p>image(f,index,phase)<\/p><p>where f is the frequency of the source;<\/p><p>index is what you swept;<\/p><p>phase is what you get from a monitor, most likely it is a line monitor. If it is 2D monitor, then you will have 3D matrix result that cannot be directly imaged.<\/p><p>Phase is always associated with field components. For example, if you want to get phse of Ex from a xy plane monitor , you can<\/p><p>E=getresult(“monitor”,”E”);<\/p><p>x=E.x;<\/p><p>y=E.y;<\/p><p>f=E.f;<\/p><p>Ex=E.Ex;<\/p><p>phase_x=pinch(angle(Ex)));<\/p><p>then phase_x will be a function of x,y and f.<\/p><p>Please try.<\/p><\/p>\n","protected":false},"template":"","class_list":["post-358888","reply","type-reply","status-publish","hentry"],"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