Fluoride Fibers
General properties
Learn more about our fluoride glass fibers specifications
Since the discovery of ZBLAN glasses in 1974, Le Verre Fluoré has worked to develop a large range of fluoride optical fibers, including ZrF4, InF3 and AlF3 based optical fibers, designed for mid-infrared applications.
Find below some specifications of our multimode and single mode fibers such as typical transmission or attenuation, long term bending radius and working temperatures.
ZFG (ZBLAN FLUORIDE GLASS) fibers
ZFG fiber are transparent from 0.3 up to 4.5 µm. Please find below there specifications (geometry, numerical aperture, attenuation, operation wavelength and operating temperatures)
- ZFG MULTIMODE
Operating wavelength
Typical optical loss @ 2.5µm
Fresnel loss (backwards reflection)
Coating material
Operating temperature
0.3 – 4.5 µm
< 20 dB/km
4% per face (air)
UV curable acrylate
– 180 to 150 °C
Typical ZrF4 Multimode fibers attenuation and transmission:
- ZFG SINGLE MODE
Typical background loss
Fresnel loss (backwards reflection)
Coating material
Operating temperature
< 10 dB/km
4% per face (air)
UV curable acrylate
– 180 to 150 °C
Typical 8.5/125 ZrF4 Single mode fibers attenuation and transmission:
IFG (Indium FLUORIDE GLASS) fibers
IFG fiber are transparent from 0.3 up to 5.5 µm. Please find below there specifications (geometry, numerical aperture, attenuation, operation wavelength and operating temperatures)
- IFG MULTIMODE
Operating wavelength
Typical optical loss @ 3.5µm
Fresnel loss (backwards reflection)
Coating material
Operating temperature
0.3 – 5.5 µm
< 20 dB/km
4% per face (air)
UV curable acrylate
– 180 to 150 °C
Typical InF3 Multimode fibers attenuation and transmission:
- IFG SINGLE MODE
Typical background loss
Fresnel loss (backwards reflection)
Coating material
Operating temperature
< 30 dB/km
4% per face (air)
UV curable acrylate
– 180 to 150 °C
Typical 7.5/125 InF3 Single mode fibers attenuation and transmission:
AFG (ALUMINIUM FLUORIDE GLASS) fibers
AFG fiber are transparent from 0.3 up to 4.0 µm. Please find below there specifications (geometry, numerical aperture, attenuation, operation wavelength and operating temperatures)
- AFG MULTIMODE
Operating wavelength
Typical optical loss @ 2.2 µm
Fresnel loss (backwards reflection)
Coating material
Operating temperature
0.3 – 4.0 µm
< 60 dB/km
4% per face (air)
UV curable acrylate
– 180 to 150 °C
Typical AlF3 Multimode fibers attenuation and transmission:
