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21 October 2026

Day of Photonics 2026

By Stanislav Perevoschikov

Today, 21 October, is the Day of Photonics. The date marks the day in 1983 when the General Conference on Weights and Measures fixed the speed of light at exactly 299,792,458 m/s. The European Photonics Industry Consortium (EPIC) started the Day of Photonics in 2014 to make the field more visible outside labs and companies. […]

20 October 2026

Flexible CO₂ laser delivery at 10.6 µm: PIR fibers vs hollow waveguides

By Stanislav Perevoschikov

art photonics Technical Note 007 Both polycrystalline silver halide fibers (PIR) and hollow waveguides (HWG) from art photonics transmit up to 85–90 % of CO₂ laser radiation (10.6 µm) through a 1 m high-power cable. Choose a PIR fiber when the cable must bend, move or run long distances: a full 360° loop costs only […]

Latest Events

13 October 2026

analytica China 2026 | 16-18 November 2026 | Shanghai New International Expo Centre (SNIEC), China

By Stanislav Perevoschikov

art photonics will be represented at analytica China 2026 in Shanghai from 16 to 18 November 2026. Together with our local distribution partner, UniqueRay Technologies Limited (Uray), we will be presenting our specialty fiber-optic solutions for inline Process Analytical Technology (PAT) and laboratory spectroscopy at Booth # E6.6920. At art photonics, we design and manufacture […]

9 September 2026

CIOE 2026 | 9-11 September 2026 | Shenzhen World Exhibition & Convention Center, China

By Stanislav Perevoschikov

art photonics GmbH is currently exhibiting at the China International Optoelectronic Exposition (CIOE) 2026 in Shenzhen. From September 9-11, we are represented at this premier industry event by our partner, UniqueRay Technologies Limited. Industry professionals are invited to visit Stand 8B16 to review our advanced portfolio of specialty fiber optic solutions. UniqueRay is showcasing our […]

About Our Company

art photonics GmbH, founded in Berlin in September 1998, is one of the worldwide leaders in development and production of specialty fiber products for a broad spectrum from 300 nm to 16 µm. Unique technologies of Polycrystalline Mid InfraRed (PIR-) fibers and Metal coated Silica fibers are used for assembly of various spectroscopy probes for medical diagnostics and industrial process control, in volume production of fiber for medical and industrial lasers, for different fiber bundles, etc. Since January 2024 art photonics GmbH is a member of NYNOMIC GROUP.

Member Of:

UV 200-400 nm

Visible

Near IR 750-2500 nm

Mid IR 2.5 - 18 µm

Chalcogenide Mid-IR Fibers

Chalcogenide Mid-IR Fibers - Image 2

Chalcogenide Mid-IR Fibers - Image 3

Chalcogenide Mid-IR Fibers - Image 4

Chalcogenide Mid-IR Fibers - Image 5

Chalcogenide Mid-IR Fibers

Categories: FlexiRay®, Optical Fibers Tag: Mid-IR

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 340 μm
Double polymer coating for high flexibility

For more information see data and downloads available below.

Description

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 340µm.

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.

Specs

Specification
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]

Parameters of standard Chalcogenide fibers
Code	Type	Core, µm	Cladding, µm	Protective Jacket, µm	NA	Min. bending Radius, mm
CIR8/300	Step Index Singlemode	8 ± 1	300 ± 15	400 ± 20	0.25 ± 0.02	60
CIR50/250	Step Index Few-mode	50 ± 3	250 ± 10	410 ± 20	0.13 ± 0.02	50
CIR250/300	Step Index Multimode	250 ± 10	300 ± 15	400 ± 30	0.30 ± 0.03	60

Downloads

art photonics - Manual CIR-Fiber Cable Handling Instruction

art photonics - Optical Fibers for Process Spectroscopy -Technical Note

art photonics - MSDS Chalcogenide Fiber

art photonics - MID-IR Chalcogenide Fiber - Datasheet

Graphs

Applications

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

Inquiry

Do you have any questions about this or any other product? Send us an inquiry, and our personnel will answer your question as soon as possible.

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