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Using the OLA as a Laser Source and Polarization Controller
Using the OLA as a Polarization Controller
Setting a Reproducible State of Polarization
If you have called the
“Pol. Controller” screen
from the “Powermeter”
application, the measured
values are still displayed.
By varying the paddle
positions, you can
determine the settings of
minimal or maximal
power.
When the automatic sweep is off, the four paddles return to zero
position (except the sweep was started automatically).
You can adjust each of the four paddles independently of each other
to any angle desired. The angular range of each paddle has been
divided into 1000 equal steps (0 to 999). This yields an adjustment
resolution of 0.18
°
.
You can thus compare measurements taken under equal conditions.
How to set the Paddles
Setting the paddles individually is only possible when the automatic
sweep is off.
1
Repeatedly press
P
ADDLE
or
↑
/
↓
to highlight any paddle.
2
Use the rotary knob to change the angle of the highlighted
paddle.
Notice that your setting is stored. It is re-established after
polarization dependent measurements. It is erased as soon as you
start the automatic sweep of the polarization controller manually.
Figure 6-2
Polarization Controller Paddle Settings Display
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