Polycrystalline IR-Fibers

art photonics developed a volume production technology of a unique product – Core / Clad Polycrystalline Infra-Red (PIR-) fibers transparent over a broad spectral range 3 – 18 μm.

Highest performance PIR core/clad fiber are extruded with core diameters span from 240µm to 860µm. Continuously improved extrusion process provides a superior optical quality and mechanical strength of PIR- fibers.

Low optical losses without absorption peaks over the mentioned spectral range ensure a successful use of PIR- fiber for a broad range of applications.

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Parameters of standard Polycrystalline fibers
Code	PIR240/300	PIR400/500	PIR600/700	PIR900/1000
Type	Step Index Multimode	Step Index Multimode	Step Index Multimode	Step Index Multimode
Core Dia., µm	240±10	400±10	600±10	860±20
Cladding Dia., µm	300+0/-10	500+0/-15	700+0/-15	1000+0/-20
Protective Jacket Dia., µm	no	no	no	no
NA	0.35±0.05	0.35±0.05	0.35±0.05	0.35±0.05
Min. bending Radius, mm	45	75	100	150

Specifications
Core/cladding composition	AgCl:AgBr
Spectral Range	3 – 18 μm
Core Refractive Index	2.15
Fresnel Reflection Losses	25%
Attenuation at 10.6 µm	0.2 – 0.4 dB/m
Effective Numerical Aperture NA	0.35 +/- 0.05
Melting Point	410 °C
Operating Temperature	–273 to +140°C
Core/Clad Diameter (standard)	see Parameters of standard Polycrystalline fibers
Laser Damage Threshold for CW CO2laser	>12 kW/cm²
Tensile Strength	> 70 MPa
Minimum Bending Radius (fixed)	5 x [Fiber Diameter]
Minimum Elastic Bending Radius	150 x [Fiber Diameter]

Mid IR spectroscopy
Flexible IR pyrometry
Flexible IR-Imaging systems
Power delivery for QuantumCascade Lasers
Power delivery for CO and CO2 Lasers

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