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Chalcogenide Infra-Red (CIR) Fiber Bundles, Convertors and Splitters

art photonics GmbH development of specialty fibers for the Mid-IR region has resulted in a unique product – Chalcogenide Infra-Red (CIR-) fibers.

Chalcogenide glasses (As2 S3) transmit IR-radiation in the spectral range of 1.1 – 6µm. Our CIR fibers are drawn in core/clad structure with double polymer coating and characterized by low total optical losses and low absorption peaks over mentioned spectral range.

High flexibility & high transmission of our chalcogenide fibers allowed producing commercial fiber bundles & convertors for Mid-IR applications.

  • Custom design 
  • Customized fiber arrangement and splitting 
  • Standard and customized connectors 
  • Mixed fiber bundles (UV, NIR, MIR) are available 


  • Flexible IR-imaging systems 
  • Remote non-contact pyrometry in the 200-600K range 
  • Fiber probes for remote process IR - spectroscopy   


CIR Fiber Bundle & Convertor Specification 

Design Rectangular to Circular  Circular to Circular
Core/Clad Fiber Diameter 250/300; 350/400; 500/550 µm
Number of Fibers Up to 37 in hexagonal configuration more - on request
Length of Bundle 0.5 - 5 m 
Types of Protective Jackets PVC, PC + Nylon, Rigid Metal Housing
Spectral Range 1.1 to 6.0 µm 
Application Notes (PDF)