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.

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 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.

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
CIR340/400	Step Index Multimode	340 ± 10	400 ± 15	510 ± 30	0.30 ± 0.03	80
CIR500/550	Step Index Multimode	500 ± 10	550 ± 15	700 ± 30	0.30 ± 0.03	100