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Passive Fibers

Passive 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.

Our fluoride fibers can be separated in three main categories:

ZFG (Zirconium ZrF4 Fluoride Glass) = fluorozirconate fibers
Exhibit a high transparency from 0.3 up to 4.5µm

IFG (Indium InF3 Fluoride Glass) = fluoroindate fibers
Exhibit a high transparency from 0.3 up to 5.5µm

AFG (Aluminium AlF3 Fluoride Glass) = fluoroaluminate fibers, generally used for end-capping solutions.
Contact us to know more about AFG.

LVF offers a large range of ZFG and IFG single mode and multimode fibers. Contact us at

LVF offers also a new range of germanate GeO2 multimode fibers that exhibit a high power handling and chemical stability around 2.7-3.0 μm. These are the fibers of choice for Er, Cr:YSGG and Er:YAG laser power handling and pigtailing.
Contact us at


  • Passive Fiber
  • Optical Fiber
  • Fluoride Fiber



LVF, located in Bruz, is the world leading manufacturer of fluoride glass and germanate glass fibers. Its mature technology enables today the realization of innovative solutions that respond to challenges of the 21st century like improving the human health, better monitoring air and water pollution, and monitoring quality in industrial processes. Our customers are industrials and laboratories around the world.

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