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Double-clad Fibers

DCF-UN-20/250-070

Double-Clad Passive Optical Fiber

Coractive optical fiber spools – DCF-UN-20/250-070

DCF-UN-20/250-070 at a glance

Key specifications

  • 20 ± 2

    Core Diameter (µm)

    Diameter of the light-guiding core.

  • 0.075 ± 0.005

    Core Numerical Aperture

    Light-acceptance angle of the core; with the core size, it sets how many modes are guided.

  • 250 ± 5

    Cladding Diameter (µm)

    Outer diameter of the glass cladding.

  • > 0.46

    Cladding Numerical Aperture

    High-NA cladding that captures and guides the pump light.

  • < 10.0

    Background Loss @ 1200 nm (dB/km)

    Low background losses.

  • 375 ± 20

    Coating Diameter (µm)

    Outer diameter of the protective polymer coating.

Description

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

Applications

  • Passive component manufacturing
  • Fiber laser systems
  • Laser beam delivery

DCF-UN-20/250-070

Specifications

Optical
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

DCF-UN-20/250-070

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