Polycrystalline IR-fiber cables

Main features:

  • Fiber Type: Polycrystalline Step Index Multimode
  • High transmittance in the range of 3 – 18 μm, Low optical losses of about 0.2 – 0.3 dB/m in the range 9 – 13 µm
  • Non-hydroscopic and non-toxic
  • Minimal aging effect
  • Core/Clad structure with core diameters span from 240 to 860 μm
  • Length ≤ 15 m depending on the fiber diameter
  • Temperature range -50 °C + 80 °C (defined by the choice of sheathing and epoxy details)

Contact us for -50°C to 140°C option or vacuum proof option

For more information see data and downloads available below

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art photonics offers standard IR-fiber cables based on Polycrystalline Infra-Red (PIR-) Core/Clad fibers transmitting in the spectral range 3 – 17 µm and possessing a robust flexible design aiming at various applications. The design of standard PIR-fiber cables is described below for 2 connector options and 3 sheathing options. Moreover, a line of customized assemblies can be designed according to the special customer’s requests – contact us if you need for non-standard cables: there is a possibility of customized design, vacuum proof option, etc.

Standard product specifications
Optical Fiber TypePolycrystalline Step Index Multimode
Wavelengths range3 – 17 µm
Fiber Core/Cladding Sizes (μm)see fiber parameters in the table below
Effective Numerical Aperture (NA)0.30 +/- 0.05
Minimum bending radius depending on protective sheathingPEEK tubing – 130mm
metal PVC coated tubing – 80mm
stainless steel tubing – 80mm
stainless steel silicone-coated tubing – 130mm
ConnectorsSMA-905, FC-PC or FC-APC with Titanium ferrule
Temperature range-50°C to + 80°C
Length≤ 15m depending on fiber diameter
Parameters of standard Polycrystalline fibers
CodeTypeCore, µmCladding, µmProtective Jacket, µmNAMin. bending Radius, mm
PIR240/300Step Index Multimode240±10300+0/-10no0.35±0.0545
PIR400/500Step Index Multimode400±10500+0/-15no0.35±0.0575
PIR600/700Step Index Multimode600±15700+0/-15no0.35±0.05100
PIR900/1000Step Index Multimode860±201000+0/-20no0.35±0.05150


  • Mid-IR spectroscopy
  • Power delivery for Quantum Cascade Lasers and for CO- and CO2-Lasers
  • Thermosensing
  • Flexible IR-imaging systems
  • Remote non-contact IR pyrometry
  • Fiber amplifiers and lasers


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