Erbium doped fiber
EDF 4/125-25
Erbium doped fiber EDF-4/125-25 is designed to minimize the amplifier length without pump-to-signal conversion efficiency degradation.

 

Erbium doped fiber

EDF-4/125-25

Core diameter, µm4 ± 0.5
Clad diameter, µm125 ± 1
Coating diameter, µm240 ± 30
Mode field diameter, µm5.5 ÷ 7.5
Core NA0.24 ± 0.03
Cutoff wavelength, µm< 0.98
Core absorption (980 nm), dB/m14 ± 2
Core absorption (1532 nm), dB/m25 ± 5
Background loss (1100 nm), dB/km< 20
Pump-to-signal conversion efficiency, %11 ± 4
Nonconcentricity, µm< 0.5
Other parameters are available on the request
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