You may refer to the example (Polarization Analyzer.osd) located in the Example Library at:
C:\Users\xxxxxx\Documents\OptiSystem 15.2 Samples\Component sample files\Visualizer Library\Optical.
This example shows you how to align the polarization of a laser.
Typically, maximum power transfer from the pump to the signal occurs when the polarization of the pump and the signal are aligned.
Regards,
Ahmad