Programming Examples
94
Agilent
8169A
Polarization Controller, Second Edition
Example 4 - Finding the Polarization
Dependence
Function
This program does the same thing as the example session given in chapter
3. That is, to measure the sensitivity to polarization, by applying a quasi-
random polarization to the (DUT).
Requirements
For this example, you will need, apart from the polarization controller, a
laser source, and a power meter (in the description below, an Agilent
8163B Lightwave Multimeter with a laser module and a sensor module are
used). A roll of fiber will act as a suitable DUT.`
Setting Up the Equipment
1
With both instruments switched off, connect the laser source to the polarization
controller.
2
Connect the polarization controller to the power meter.
Figure 16 Setup for setting the position of the polarizing filter.
3
Switch on both instruments, and enable the laser source.
4
Set the channel with the sensor module to the wavelength of the source, and
select the default averaging speed (200ms) [Press
to select T, hold
to reset T].
When prompted by the program, you should connect the DUT into the
setup, disturbing the setup as little as possible.
Under normal circumstances you should leave the instruments to warmup.
(The multimeter needs around 20 minutes to warmup.) Warming up is
necessary for accuracy of the sensor, and the output power of the source.
N O T E
