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Performance Test Procedure
WARNING
Agilent 81570A, 71A, 76A, 77A & 78A Variable Optical Attenuators, Eigth Edition
.
Figure 15
PDL Test Setup - Mueller method
The patchcords to and from the polarization controller and the attenuator
must not move during, or between measurements. Use adhesive tape to fix
the fibers to the table.
Measure the Optical Power after the Attenuator Module
Open the shutter of the attenuator.
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Set the λ/4 and λ/2 Retarder Plates for Linear Horizontal polarized light.
27
Note the power reading as DUT Power P
28
Set the λ/4 and λ/2 Retarder Plates to the corrected wavelength
29
dependent positions for Linear Vertical polarized light.
Note the power displayed on the power meter as DUT Power P
30
Test Record.
Set theλ/4 and λ/2 Retarder Plates to the corrected wavelength
31
dependent positions for Linear Diagonal polarized light.
Note the power reading as DUT Power P
32
Set theλ/4 and λ/2 Retarder Plates to the corrected wavelength
33
dependent positions for Right Hand Circular polarized light.
Note the power reading as DUT Power P
34
Calculate the Mueller coefficients, the maximum and minimum
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transmission and finally the Polarization Dependent Loss (PDL) as
described in the Test Record.
Performance Tests
in the Test Record.
1
2
in the Test Record.
3
in the Test Record.
4
in the
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