Multimode fibers

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Fluoroindate Multimode

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IFG (Indium InF3 Fluoride Glass) = fluoroindate fibers
Exhibit a high transparency in UV, visible and mid-infrared from 0.3 up to 5.5µm (see graph below) :

Cut-back background losses:

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

Operation wavelengths (<1dB/m):

ZFG: 0.32-4.3µm
IFG: 0.335-5.3µm
GeG: 2.78 and 2.94µm

LVF delivers a complete line of IFG InF3 standard multimode fibers with numerical apertures of 0.2 or 0.3.
(Note other numerical apertures might be in stock).

Discover our range of standard IFG multimode fibers :

∅core (µm)	∅cladding (µm)	Numerical aperture	Reference
100	160	0.20 or 0.30	IFG MM (NA) 100/160
200	260	0.20 or 0.30	IFG MM (NA) 200/260
300	360	0.20 or 0.30	IFG MM (NA) 300/360
400	460	0.20 or 0.30	IFG MM (NA) 400/460
600	680	0.20 or 0.30	IFG MM (NA) 600/680

Find out more about our IFG multimode fiber specifications

Standard price available
in our catalog on-line

CUSTOMIZE
your own fiber

• Custom NA (from 0.18 to 0.32)

• Custom core/cladding size (up to 1000 µm core diameter)

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.

What are fluoroindate (IFG) fibers ?

Fluoroindate (IFG) fibers are optical fibers made from indium fluoride (InF3) glass, known for their high transparency in UV, visible, and mid-infrared spectra, up to 5.5 µm.

. What are the advantages of IFG fibers?

IFG fibers offer low transmission loss, with typical losses less than 20 dB/km at 3.6 µm, making them ideal for applications requiring efficient transmission in the mid-infrared range. IFG fiber are more transparent than silica fiber above 2µm. Unlike most of other mid-IR fibers, IFG exhibit limited Fresnel losses (<4% per face)

What are the operating wavelengths for IFG fibers ?

IFG fibers can operate effectively in a wavelength range from 0.335 to 5.3 µm with losses less than 1 dB/m. > 3.5 par rapport au ZFG

What are the typical applications of IFG fibers?

IFG fibers are used in applications requiring efficient transmission in the mid-infrared range, such as sensors, lasers, optical communication systems and gas sensing.