Ytterbium doped double clad fiber YDF-DC-10/125

Photodarkening free Yb-doped DC fiber
Application notes:

YDF-DC-10/125 series is designed for operation without any power degradation in a high-peak-power cladding pumped amplifiers. The highest clad absorption over the market allows usage of only 3 m of such fiber (with 976 nm pump) for efficient amplification.

Article YDF-DC-10/125   

Typical inner clad absorption

Fiber specifications

Fiber ID


Core diameter, µm 10.0 ± 0.5
Clad diameter, µm 125 ± 2
Clad shape  PANDA or octagonal
Core NA 0.085 ± 0.01
Clad NA > 0.46
Cutoff wavelength, µm 1.05 ± 0.1
Clad absorption (915 nm), dB/m > 1.8
Clad absorption (976 nm), dB/m   ~ 5
Core/clad background loss (1150 nm), dB/km < 50
Photodarkening resistance   >20 times better compare to the Al2O3-SiO2 Yb-doped fiber
Other parameters including PM version are available on the request

 Ytterbium doped fiber (Article YDF-DC-10/125)