It's designed for core pumping at 1550–1600 nm, compatible with standard erbium-doped fiber laser (EDFL) pump sources.
With core absorption above 60 dB/m at 1568 nm, only a short length of fiber is needed to absorb the pump light, enabling compact 2 µm laser and amplifier designs.
Yes, a PM version is available on request, along with other custom parameters.
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