This phosphosilicate fiber is ideal as a gain medium for lower power amplifiers or the pre-amplifier stage and is mainly used in a MOPA configuration of a pulsed fiber laser. On top of all the benefits found in a phosphosilicate fiber (high saturation energy, photodarkening-free performance and high absorption), this fiber shows easy single-mode operation and very low splice loss when matching with standard fibers such as HI 1060.

Features & Benefits
  • Easy single-mode operation and low splice loss with passive matching fibers and HI 1060 standard.
  • Photodarkening-free – ensures stable long-term operation
  • Wide, flat absorption from 910 nm to 970 nm – reduces pump cooling and allows 940-960 nm pumping
  • Pulsed fiber lasers: gain media in pre-amplifiers or low power amplifiers
  • Material processing: laser marking, laser engraving, micromachining and welding
Cladding Absorption @ 915 nm (dB/m)
1.3 ± 0.2
Cladding Absorption @ 975 nm (nominal) (dB/m)
Core Numerical Aperture
0.19 ± 0.02
Cladding Numerical Aperture
> 0.45
Geometrical & Mechanical
Core Diameter (µm)
7 ± 1
Cladding Diameter (µm)
128 ± 3
Core/Cladding Concentricity Error (µm)
< 1
Coating Diameter (µm)
260 ± 20

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