The Yb-MCOF-10/125-08-1.6-PM fiber is a PM, multiclad singlemode fiber based on a low photodarkening core glass host ensuring long term performances.


Its single-mode output design makes it the perfect choice for pulsed fiber lasers and amplifiers requiring superior beam quality. 

Features :

  • Single-mode output design
  • High birefringence
  • Low photodarkening


  • Pulsed fiber amplifiers and lasers
  • Frequency conversion
  • Material processing

Main specifications

Optical Properties

Core NA 0.08 ± 0.01
Cladding NA > 0.47
Pump guide absorption @ 915 nm 1.6 ± 0.3 dB/m
Nominal pump guide absorption @ 975 nm 6 dB/m
Birefringence ≥ 2.0 x 10-4

Physical Properties

Optical Cladding Multi
Core diameter 10 ± 1 µm
Silica cladding diameter 125 ± 1 µm
Coating diameter 245 ± 10 µm
Cladding geometry Round
Core/clad concentricity error < 1 µm
Screen proof tested 100 kpsi
Confined core No
Depressed cladding No
Price per meter, 1 to 9 meters (in USD)* $200
*Price may vary depending on quantity ordered.
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