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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

DesignRectangular to Circular Circular to Circular
Core/Clad Fiber Diameter250/300; 350/400; 500/550 µm
Number of FibersUp to 37 in hexagonal configuration, more on request
Length of Bundle0.5 - 5 m
Types of Protective JacketsPVC, PC + Nylon, Rigid Metal Housing
Spectral Range1.1 to 6.0 µm

Application Notes: CIR fiber bundles, convertors, splitters

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