Germanate glass core fiber
GDF-SM-3.5/125-50
Higly Ge-doped silica fibers are used for variety of nonlinear applications.

 

High germania core fiber

GDF-SM-3.5/125-50

Core diameter, µm4 x 3 (elliptical)
Clading diameter, µm125 ± 1
Coating diameter, µm260 ± 10
Delta n0.074
GeO2 concentration, %50
Cutoff wavelength, µm~ 1.92
Attenuation (at 1060nm), dB/km23
Attenuation (at 1300nm), dB/km12
Attenuation (at 1550nm), dB/km6.7
Attenuation (at 1850nm), dB/km~ 7
Attenuation (at 2100nm), dB/km49
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