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GDF Germanate Glass Core Optical Fibers

Product information "GDF Germanate Glass Core Optical Fibers"

Cut off Wavelength 700, 1400 nm; Core Dia. 2.2, 8x7 µm; Cladding Dia. 125 µm; GeO2 Concentration 75, 98%

Greitlex Photonics’ GDF series of Germanate glass core optical fibers is available for single mode (SM) or multi mode (MM) applications. GDF series fibers feature core diameters of 2.2 µm (round, GDF-SM-2.2/125-75) and 8x7 µm (elliptical, GDF-MM-8/125-98).


The GDF-SM-2.2/125-75 single mode version is a higly Ge-doped silica Germanate glass core fiber used for a variety of nonlinear applications. The GDF-MM-8/125-98 multi mode version is a Germanate glass core fiber, also used for a variety of nonlinear applications. It replaces similar products from former FORC Photonics.


Key Features:

  • Germanium-doped Fibers
  • Germanate Glass Core, GeO2 Concentration: 75, 98%
  • Core Diameter: 2.2 µm, 8x7 µm (elliptical)
  • Cladding Diameter: 125 µm
  • Coating Diameter (GDF-MM-8/125-98): 250 µm
  • Cut off Wavelength: 700, 1400 nm
  • Minimum Loss (GDF-SM-2.2/125-75): 20 dB/km
  • Attenuation (GDF-MM-8/125-98): 110, 200 dB/km
  • Typ. Peak Gain: >0.2 dB/m
Information on the manufacturer (information obligations under the GPSR Product Safety Regulation)
Greitlex Photonics
Danila Lekica Spanca 1/2
11070 Novi Beograd, Serbia
Manufacturer "Greitlex Photonics"
Greitlex Photonics, based in Novi Beograd, Serbia, focuses on development and production of specialized fiber components, From high peak power modules, components for single frequency lasers, components for amplifiers through to metal-coated fibers and fiber bragg gratings (FBG) - components from Greitlex help customers to significantly improve their products. 
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Cut off Wavelength 1000, 1500 nm; Numerical Aperture 0.3; Core Dia. 3, 4,5 µm; Cladding Dia. 125 µm; Optical Loss <5 dB/kmGreitlex Photonics’ series of Germanium-doped high non-linear single mode fibers feature core diameters of 3 and 4.5 µm. HNLF fibers are designed to maximize fiber nonlinearity and minimize optical loss, which makes such fibers optimal for constructing highly efficient Raman lasers and amplifiers, dispersion compensators and various non-linear devices. The HNLF DS fibers with shifted dispersion are designed for applications requiring a shift of the zero dispersion wavelength to the 1550 nm spectral region: supercontinuum generation, parametric conversion, etc. Other parameters including core and PM versions are available on the request. These fibers replace similar products from the former FORC Photonics. Key Features: Germanium-doped Fibers Core Diameter: 3, 4.5 µm Cladding Diameter: 125 µm Cut off Wavelength: 1000, 1500 nm Core Numerical Aperture: 0.3 Optical Loss: <5 dB/km Applications: Amplifiers; Lasers; Superfluorescent Fiber Sources
Product number: SW11014
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