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FDTD Simulation Data analysis of Gold Nanosphere

(joined February 2018)
Participant

when i export the result, it gives me a four-window panel. What are the parameters it shows? AND what’s the difference of Real, Imaginary, Amplitude, Phase?

Attachments:
  1. sphere1.DFT_Ez.f3d

Responses (2):

  • #47756

    when i export the result, it gives me a four-window panel. What are the parameters it shows? AND what’s the difference of Real, Imaginary, Amplitude, Phase?

    Attachments:
    1. sphere1.DFT_Ez.f3d
  • #47979
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    Scott Newman
    Participant

    The Optiwave 3D viewer which opens does give you 4 views.
    1. Top-Left: A top down view of the DFT of the field, in your case the EZ field, as captured by your observation area. The z coordinate is in fact the real/imaginary/amplitude value depending on what you have selected. This view has a red marker which can be moved using the mouse. This cross hair is used to define the other views.
    2. Top-Right: The DFT values along the vertical part of the aforementioned marker are shown in this view. This is the X-cut view .
    3. Bottom-Left: The DFT values along the horizontal part of the aforementioned marker are shown in this view. This is the Y-cut view.
    4. Bottom-Right: The 3D representation of the data.

    The field exported from an observation area is a DFT which has real and imaginary components. The amplitude and phase are the standard definitions for a complex quantity. amplitude = sqrt(real^2+imaginary^2), phase = atan(imaginary/real).

    +1
  • #47987

    thanks

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