The DCF-UN-25/250-11 passive fiber has excellent geometrical properties and low background losses. It is designed to match industry-standard active fibers. It is used for manufacturing passive components required in material processing or sensing applications.

Features & Benefits
  • Low background losses
  • Excellent geometrical properties
  • Compatible with industry standards
  • Passive component manufacturing
  • Fiber laser systems
  • Laser beam delivery
Core Numerical Aperture
0.11 ± 0.005
Cladding Numerical Aperture
> 0.45
Background Loss @ 1200 nm (dB/km)
< 10
Geometrical & Mechanical
Core Diameter (µm)
25.0 ± 1.5
Cladding Diameter (µm)
250 ± 5
Core/Cladding Concentricity Error (µm)
< 1.8
Coating Diameter (µm)
375 ± 20

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