Multimode fibers
Multimode mid-IR fibers
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.
The company also commercializes Germanate (germanium oxyde) optical fibers, dedicated to high power transmission aroung 2.8-3.0 µm.
Our fluoride fibers can be separated in three main categories :
- ZFG (Zirconium ZrF4 Fluoride Glass) = fluorozirconate / ZBLAN fibers
Exhibit a high transparency from 0.3 up to 4.5 µm (see graph below) - IFG (Indium InF3 Fluoride Glass) = fluoroindate fibers
Exhibit a high transparency from 0.3 up to 5.5 µm (see graph below) - AFG (Aluminium AlF3 Fluoride Glass) = fluoroaluminate fibers.
Generally used for end-capping solutions.
Contact us to know more about AFG. - GeG (Germanate Glass) = germanium oxyde fibers.
Generally used for Er-YAG laser coupling and end-capping solutions.
Used for their high transparency bewteen 2.7 and 3.0 µm, those fibers are transparent from visible (see graph below). - For higher wavelengths needs, chalcogenide or polycristalline optical fibers can be used.
- ZFG: Typ < 20dB/km at 2.5 µm
- IFG: Typ < 20dB/km at 3.6 µm
- GeG: Typ < 150 dB/km at 2.78 μm < 400 dB/km at 2.94 μm
- ZFG: 0.32-4.3µm
- IFG: 0.335-5.3µm
- GeG: 2.78 and 2.94µm
Those glasses can be drawn in many kind of design depending on your needs, rare earth doped of not.
Click on the category you are interested in to find out more :
- Mode scrambling fibers (octogonal core)
- Single mode fluoride fibers for supercontinuum
- Polarization maintaining mid infrared fibers
Our fluoride glasses can also be easily doped with rare earths and drawn into single clad or double clad fibers for laser applications :
If you are interested in doped fibers, please consult the active fibers category.
