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Performance Tests
V. Polarization Dependent Loss (PDL): Optional
CAUTION The patchcords between the polarization controller and the optical
head must not move until the measurements are finished.
12. Set the 8156A Attenuator (DUT) to 0dB using the modify keys.
Figure D-14 PDL Test Setup 2: Power after DUT
13. Measure the optical power after the DUT
a. Linear Horizontal polarized light.
• Set the
λ/4 and λ/2 Retarder Plates for Linear Horizontal
polarization. You need to select the
λ/4 and λ/2 Retarder
plates by pressing
λ/4 and λ/2 respectively.
Type the appropriate value and press E
NTER after each
entry.