LVF Catalog

Fluoride Glass Fibers

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)
Germanate Multimode

Standard price available
in our catalog on-line