Polycrystalline IR-Fiber Cables
Core / Clad Polycrystalline Infra-Red (PIR-) fibers are a unique product for a mid-infrared region. The PIR-fibers are very flexible, non-toxic, transparent across a broad spectral range of 4 -18 μm and capable for operating over the wide temperature range – from 4 K to 420 K.
● High transmittance from 4 μm up to 18 μm
● High flexibility and no toxicity
● Suitable for CO2 laser power delivery up to 50 W CW
● Low attenuation at 10.6 μm (0.1-0.5 dB/m)
● Standard fiber diameters from 0.3 to 1.0 mm
● No ageing effect
● Flexible radiometry
● Flexible IR-imaging systems
● Spectroscopy probes for gases and liquids
● Power delivery for CO and CO2-lasers
| Standard Fibers | PIR-240/300 | PIR-400/500 | PIR-630/700 | PIR-900/1000 |
|---|---|---|---|---|
| Core diameter, um | 240 | 400 | 630 | 900 |
| Cladding diameter, um | 300 | 500 | 700 | 1000 |
| Minimum bend radius | 50 | 70 | 100 | 130 |
| Transmission range | 3 – 18 um |
| Core material | AgCl 0.25 Br 0.75 |
| Cladding material | AgCl 0.50 Br 0.50 |
| Protective tubing | PEEK |
| Core refractive index | 2.15 |
| Effective NA | 0.28±0.03 |
| Operating temperature, °C | -270 < T < 140 |
| Maximum transmitted Power, W | 40 (CW) |
Transmission spectra of 1.5m long PIR-900/1000 fiber (red) versus 1,5m long CIR-750/850 fiber (blue), includes Fresnel reflection & coupling losses at fiber ends and absorption bands of atmospheric moisture.
| Parameter | Typical value CIR-Fiber | Typical value PIR-Fiber |
|---|---|---|
| Transmission range | 1.5 to 6.0 μm or 1600 – 6500 cm-1 | 3 – 18 µm or 550 – 3300 cm-1 |
| Core/Cladding material | Chalcogenide As-S glasses | AgCl : AgBr solid solution crystals |
| Specific features | Toxic & Fragile Non-hygroscopic | Non-toxic, Non-hygroscopic, very flexible – up to plastic deformation, UV-sensitive |
| Core refractive index | 2.4 | 2.2 |
| Effective NA | 0.28 | 0.25 |
| Optical losses | Min. 0.2 dB/m @ 2 – 4 μm | Min. 0.2-0.3 dB/m @ 10-12 μm |
| Minimum bending radius | 100 x Fiber diameter | |
| Operating temperature, °C | -200 < T < 100 | -270 < T < 150 |
| Maximum transmitted Power, W | 1 | 50 (CW) |