Chalcogenide Mid-IR Fibers

Main features:

  • High transmittance in the range 1.1 – 6.5 μm
  • Low optical losses of about 0.2 – 0.3 dB/m at 2.5 – 4 µm and 4.5 – 5 µm
  • Core/Clad structure with core diameters span from 8 to 500 μm
  • Double polymer coating for high flexibility

For more information see data and downloads available below.

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Chalcogenide As-S glass fiber transmits IR-radiation in the spectral range of 1.1 – 6.5μm. High performance CIR core/clad fiber are drawn with core diameters span from 8µm to 500µm.

Advanced drawing process with double polymer jacket provides a superior mechanical strength and high flexibility of CIR- fibers.

Low optical losses and small absorption peaks over the mentioned spectral range ensure a successful use of CIR-fiber for a wide range of applications.

For more information please visit our “Downloads” section and find relative articles at our “Publications” page.

 

Parameters of standard Chalcogenide fibers
Code Type Core Dia., µm Cladding Dia., µm Protective Jacket Dia., µm NA Min. bending  Radius,mm
CIR8/300 Step Index Single-mode 8±1 300±15 400±20 0.25 ± 0.02 60
CIR 50/250 Step Index  Few-mode 50±3 250±10 410 ± 20 0.13 ± 0.02 50
CIR 250/300 Step Index Multimode 250±10 300±15 400 ±30 0.30 ± 0.03 60
CIR 340/400 Step Index Multimode 340±10 400±15 510 ± 30 0.30 ± 0.03 80
CIR 500/550 Step Index Multimode 500±10 550±15 700 ± 30 0.30 ± 0.03 100

 

Specifications
Core/cladding composition As2S3
Spectral Range 1.1 – 6.5 μm
Core Refractive Index 2.42
Fresnel Reflection Losses 31%
Attenuation at 3 – 4 μm & 4.5 µm – 5 µm 0.2 – 0.4 dB/m
Effective Numerical Aperture NA see Parameters of standard Chalcogenide fibers
Glass Transition Temperature, Tg 185 °C
Operating Temperature –273°C to +90°C
Core/Clad Diameter (standard) see Parameters of standard Chalcogenide fibers
Protective Jacket Fluoro polymer + PVC
Tensile Strength > 70 MPa
Minimum Bending Radius (fixed) 100x [Fiber Diameter]
Minimum Elastic Bending Radius 200x [Fiber Diameter]

 

 

 

  • Mid IR spectroscopy
  • Flexible IR pyrometry
  • Flexible IR-imaging Systems
  • Power delivery for Quantum Cascade Lasers
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