WSOP:
This function combines the PMDPro’s discrete PMD generation function with its
automatic polarization control function. The polarization controller is used to tune the
input SOP to the PMD generation element to obtain the worst-case DGD or PMD effect
for a given DGD and/or SOPMD value.
PMD SETTING:
First, select the desired DGD/SOPMD pair by setting the index number in the PMD ID#
box. The corresponding DGD and SOPMD will be displayed in the adjacent boxes. Click
“Set PMD” to execute the setting.
EQUAL POWER SPLIT:
In this function, the input polarimeter reading is used to control the polarization controller
to align the input polarization state to obtain an equal power split between the
polarization components aligned to the slow and fast axes of the PMD element. This
function can be used only with DGD-only states (SOPMD = 0). These correspond to
PMD index numbers 0-255. If a larger index number is selected, this function will be
disabled (The “Start Tracking” button will be grayed out). Click the “Start Tracking”
button to begin the SOP search. The DOP values measured by the input and output
polarimeters are displayed in the corresponding boxes.
OPTIMIZE OUTPUT DOP TO MIN:
In this function, the output polarimeter reading is used to control the polarization
controller to tune the input polarization state to minimize the DOP of the signal after it
passes through the PMD element. This function can be used with any PMD value in the
lookup table. Click the “Start Tracking” button in this section of the screen to begin the
search. The DOP values measured by the input and output polarimeters are displayed in
the corresponding boxes.
Document #: GP-UM-PMD-1000-21
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