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Description

Optran® WFGE optical fibers are fibers with a germanium-doped silica core and fluorine-doped cladding, designed for light transmission in the visible and near-infrared spectral range.

The germanium-doped core represents a defined modification of the fiber material compared to standard silica fibers and is used to achieve specific optical characteristics within the fiber design.

Optran® WFGe fibers are available with core diameters ranging from 50 to 1000 µm.

The fibers can be supplied with different jacket materials including nylon, ETFE, acrylate, or polyimide, with corresponding proof test levels of up to 100 kpsi (nylon, ETFE, acrylate) and 70 kpsi (polyimide). 

 

• Superior transmission above 2000 nm compared to WF/WFNS fibers

Optran® WFGe – Germanium-Doped Fiber (400–2400 nm)

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Specifications

Core Diameter: Not Specified
Wavelength Range: 400 – 2400 nm
Cable Length: Not Specified
Fiber Core Material: Ge-Doped Fused Silica
Wavelength / Spectral Range: 400 – 2400 nm
Numerical Aperture (NA): 0.37 ± 0.02
Operating Temperature: -190 to +350°C
Core Diameter: 50 to 1000 μm
Standard Core / Cladding Ratios: 1 : 1.04 | 1 : 1.06 | 1 : 1.1 | 1 : 1.15 | 1 : 1.2 | 1 : 1.25 | 1 : 1.4 or customized

Got questions about specs? Use the inquiry form to ask.

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Features

  • High Numerical Aperture: Standard NA of 0.37 ± 0.02, with options for higher NA available upon request.
  • Wide Operating Temperature: -190 to +350°C, suitable for extreme conditions.
  • Core Diameters: 50 to 1000 μm, allowing for tailored solutions to meet specific needs.
  • Standard Core/Cladding Ratios:
    • 1:1.04
    • 1:1.06
    • 1:1.1
    • 1:1.15
    • 1:1.2
    • 1:1.25
    • 1:1.4
    • or customized ratios for precise application requirements.
  • Robust Prooftest Standards:
    • 100 kpsi (Nylon, ETFE, Acrylate)
    • 70 kpsi (Polyimide)
  • Minimum Bending Radius:
    • 50 × cladding diameter for short-term stress
    • 150 × core diameter for high laser power usage
  • Durable Jacket Options:
    • Polyimide (-190 to +350°C)
    • ETFE (-40 to +150°C)
    • Nylon (-40 to +100°C)
    • Acrylate (-40 to +85°C) 
  • Advanced Material Composition: Features fluorine-doped silica cladding and germanium-doped silica glass core for enhanced performance.

Applications

  • Spectroscopy: Ideal for precise measurement and analysis of light spectra.
  • Laser Technology: Suitable for high-performance laser applications due to its high numerical aperture.
  • Research: Versatile for various research applications requiring broad spectral range and high NA.
  • Photodynamic Therapy: Effective for medical applications involving light-activated treatments.
  • High NA Applications: Perfect for demanding applications that require a high numerical aperture.

Frequently Asked Questions

What is the purpose of germanium doping in the fiber core?
Germanium doping is used to modify the optical properties of the fiber core, allowing defined fiber characteristics depending on the design.
What distinguishes Optran® WFGE from standard WF fibers?
Optran® WFGE fibers use a germanium-doped silica core, while standard WF fibers use undoped silica cores. This represents a different material composition of the fiber core.
Is Optran® WFGE suitable for UV applications?
Optran® WFGE fibers are designed for use in the visible and near-infrared spectral range.
How does Optran® WFGE compare to WFNS fibers?
Optran® WFGE differs from WFNS fibers in core material composition, while WFNS fibers are defined by an extended transmission range into the UV region.
When should Optran® WFGE be selected?
Optran® WFGE is typically selected when a fiber with a germanium-doped core is required for specific optical characteristics within VIS/NIR applications.

Got more questions? Use the inquiry form to ask the supplier directly.

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