The Polarization Beam Combiner/Splitter is a compact high
performance lightwave component that combines two
orthogonal polarization signals into one output fiber.
The most common application is to combine the light of
two pump lasers into a single fiber to double the pump
power to an Erbium-Doped Fiber Amplifier (EDFA) or a
Raman Amplifier. The typical configuration uses two PM
fibers for the input and the SM fiber for the output.
The device can also be used as a beam splitter with SM/PM
input fiber, depending on applications.