The DCF-UN-20/250-070 passive fiber features excellent geometrical properties. It is specially designed for manufacturing fiber laser passive components such as power combiners or isolators. This fiber can also be used for beam delivery cables for low-power industrial fiber lasers.

Features & Benefits
  • Compatible with industry standards
  • Low background losses
  • Excellent geometrical properties
  • Passive component manufacturing
  • Fiber laser systems
  • Laser beam delivery
Core Numerical Aperture
0.075 ± 0.005
Cladding Numerical Aperture
> 0.46
Background Loss @ 1200 nm (dB/km)
< 10.0
Geometrical & Mechanical
Core Diameter (µm)
20 ± 2
Cladding Diameter (µm)
250 ± 5
Core/Cladding Concentricity Error (µm)
≤ 1.8
Coating Diameter (µm)
375 ± 20

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