Chalcogenide Fibers | Infrared Optical Fibers

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.

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

Chalcogenide IR-Fibers

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