Bismuth doped fibers BGDF-SM-7/125-1430

Article BGDF-SM-7/125-1430



Bismuth-Germanium codoped fiber BGDF-SM-7/125-1430 series is specially designed for typical application for amplifiers, lasers, superfluorescent fiber sources operating at 1370-1490nm. 

Minimal fiber length required for 25 dB gain at 1430 nm L=85m (actual length depends on pump and signal power)

Minimal fiber length required for 25 dB gain in the range 1.41-1.45 L=100m (actual length depends on pump and signal power).

Please see frequently asked questions below.

Bismuth doped fiber

















 Bismuth doped fiber 


Wavelength range, nm 1370 ÷ 1490
Core diameter, µm 6.5 ± 0.6
Clad diameter, µm 125 ± 5
Coating diameter, µm 230 ± 20
Coating material type silicon rubber
Core NA 0.14 ± 0.02
Cutoff wavelength, µm 1.15 ± 0.1
Core absorption (1310 nm), dB/m   0.3 ± 0.06
Amplification range (-3dB), nm 1410 ÷ 1450
Typ. peak gain (@1430 nm), dB/m > 0.3 (Pp ~ 200mW at 1310nm)
Typ. gain (@1410 ÷ 1450 nm), dB/m
> 0.2 (Pp ~ 200mW at 1310nm)
Typ. gain for Polarization maintaining fiber version (@1410 ÷ 1450 nm), dB/m > 0.3
Tipical laser eff-cy, % > 50% (vs pump power at 1310 nm)
Splice loss with SMF28 (@1310), dB ~ 0.2

 Bismuth doped fiber (Article BGDF-SM-7/125-1430) 



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