Keysight N778xC Series Polarization Instruments User’s Guide 59
User Interface Reference 4
The Polarimeter View
You can choose different views for the same measurement data. One of
these views is the Poincaré sphere window. You can rotate the sphere by
clicking onto the sphere and dragging the mouse with the left mouse
button held down.
Poincaré View Zoom - You can scroll the wheel of an attached mouse to
zoom in the Poincaré View. Click on the Reset Zoom button to zoom out
the Poincaré View.
Calculate PER - The polarization extinction ratio (PER) of light in a PMF
can be determined by creating circle trajectories on the Poincaré sphere.
This can be done in realtime mode by either changing the wavelength or
by slightly stretching or warming up the PMF. When you see the circle
trajectory, press this button to calculate the PER. Press the button again to
remove the displayed PER.
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