Santec PEM-340 - Principle of Operation

Polarization Extinction Ratio Meter PEM-340
5-1
5
Principle of Operation
The above diagram shows the design of the PEM-340 unit. The optical ber is connected through
the input connector. The light from the fiber is then collimated by a lens, and after passing
through a rotating polarizer is incident on the photodetector.
0
180
1 measurement period
max
min
Optical Power
Polarizer Angle (deg)