For more information see data and downloads available below.
Chalcogenide InfraRed (CIR-) As-S glass fibers transmit radiation in the spectral range 1.1 – 6.5 μm.
High performance CIR Core/Clad fibers are drawn with the core diameters span from 8 to 500 µm. Advanced drawing process with double polymer jacket provides CIR-fibers with a superior mechanical strength and high flexibility.
Low optical losses and small absorption peaks over the mentioned spectral range ensure a successful use of CIR-fibers in a broad range of applications.
| 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±10 | 250±10 | 300+10/-15 | 400+10/-15 | 550+10/-20 |
| Protective Jacket Dia., µm | 400±20 | 410 ± 30 | 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 | 0.30 +/- 0.05 |
| Glass Transition Temperature, Tg | 185 °C |
| Operating Temperature | –273°C to +90°C |
| Core/Clad Diameter (standard) | See table above |
| Protective Jacket | Fluoro polymer + PVC |
| Tensile Strength | > 70 MPa |
| Minimum Bending Radius (fixed) | 100x [Fiber Diameter] |
| Minimum Elastic Bending Radius | 200x [Fiber Diameter] |
