Multimode fibers
Germanate Multimode
2 weeks delivery time
Response within 48h
LVF offers a new range of germanate GeO2 multimode fibers for Er:YAG lasers (2.94 µm emission) and Er,Cr:YSGG lasers (2.78 µm emission) power handling and pigtailing. These lasers are widely used in surgery and dentistry.
GeG (Germanium oxide GeO2 based Glass) = germanate fibers.
- GeG optical fibers ensures longer and higher power handling that fluoride fibers (both ZBLAN and fluoroaluminate) around 2.7-3.0 µm.
This is why those fibers are widely used to fiber couple lasers such as Er-YAG or Er-YSGG. - Each fiber is qualified for high power handling by injecting 600 mJ pulses @ 2.78 µm to ensure long life.
Note the refractive index of such glasses is around 1.91, and induce 9.8% Fresnel losses per face.
Such fibers are typically used as 2 m long segment, find below the corresponding transmission :
LVF delivers a complete line of GeG standard multimode fibers with numerical aperture of 0.18.
Available soon : NA > 0.22
Discover our range of standard GeG multimode fibers:
∅core (µm) | ∅cladding (µm) | Numerical aperture | Reference |
|---|---|---|---|
200 | 260 | 0.18 | GeG MM (0.18) 200/260 |
450 | 500 | 0.18 | GeG MM (0.18) 450/500 |
600 | 680 | 0.18 | GeG MM (0.18) 600/680 [available soon] |
250 | NA | NA | GeG Rod 250 (for end-capping) |
Standard price available
in our catalog on-line
All our fibers are available as fiber patch cables or fiber bundles
You have requirements about high power laser delivery?
LVF proposes IR screened fibers and endcaps solutions.
Germanate (GeG) fibers are optical fibers made from germanium oxide (GeO2), designed for use with Er:YAG lasers (emission at 2.94 µm) and Er,Cr:YSGG lasers (emission at 2.78 µm). They are widely used in surgery and dentistry.
Germanate fibers offer better power handling and longer lifespan than fluoride fibers (ZBLAN and fluoroaluminate) around the wavelengths of 2.7-3.0 µm. They are ideal for fiber coupling lasers such as Er-YAG or Er-YSGG.
Each fiber is qualified for high power handling by injecting 600 mJ pulses at 2.78 µm to ensure a long lifespan.
The refractive index of germanate glasses is around 1.91, which induces Fresnel losses of 9.8% per face. GeG fibers also transmit red light (> 50% transmitted on 2m)
Germanate fibers are primarily used for fiber coupling lasers in surgery and dentistry, particularly with Er:YAG and Er,Cr:YSGG lasers.
Such fibers can be spliced at the end of fluoride fibers to protect it from OH corrosion when operating around 2.8-3µm
