Silica-silica fibers visible to near-IR
HPSIR Series
- Wide spectrum-IR and visible
- High power transmission
- Radiation resistant
These multimode step-index silica-silica fibers have a pure silica core and doped silica cladding. They will transmit light from 500-2600 nm. For general use an acrylate coating is recommended. Acrylate coated fibers are available in sizes from 200 µm to 1.0 mm core diameter. For optical fiber light guides or higher temperatures, polyimide coated fibers are available in core diameters up to 300 µm. They have a very low fluorescence and are recommended for spectroscopy. These fibers are suitable for use across a wide wavelength range. They can be used for high power transmission and have good radiation resistance.
These fibers are available as cables or patchcords.
Fiber specification
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Fiber type Step-index multimode |
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Core material High purity synthetic silica |
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Cladding material Doped silica |
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Numerical aperture 0.22±0.02 |
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Minimum bend radius (short term) 100 times fiber radius |
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Minimum bend radius (long term) 500 times fiber radius |
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Typical spot values of attenuation 1.06 µm (Nd:YAG laser) <0.01dB/m |
HPSIR Series acrylate coated
| HPSIR 200P | HPSIR 400P | HPSIR 600P | HPSIR 1000P | |||||
| Core diameter µm | 200 | 400 | 600 | 1000 | ||||
| Cladding diameter µm | 224 | 424 | 636 | 1060 | ||||
| Coating diameter µm | 360 | 700 | 1000 | 1600 |
The minimum cladding thickness to avoid losses due to tunnelling is approximately 12 µm. For this reason the 200 µm fiber has a 224 µm cladding diameter. For larger diameters the standard core/cladding ratio for HPSIRP fibers is 1:1.06. Other core cladding ratios are available to special order.
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Operating temperature -40°C to +85°C |
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Maximum intensity of transmitted power*
CW up to 100 kW/cm2. For pulsed lasers (<1µS) 500kW/cm |
* These figures refer to threshold of damage and assume a circular spot with linear power distribution. Many real lasers are less than ideal and so these figures must be used with caution. Our technical sales department will be pleased to advise on selection of fibers for high-powered lasers. See also tapered fibers.
HPSIR Series polyimide coated
| HPSIR 951 | HPSIR 2001 | HPSIR 3001 | ||||
| Core diameter µm | 93 | 200 | 300 | |||
| Cladding diameter µm | 117 | 224 | 318 | |||
| Coating diameter µm | 123 | 240 | 335 |
The HPSIR93I is recommended for fiber bundles (light guides) as it allows small bend radii to be used.
Operating temperature: -190°C to +350°C
Step-index silica-silica fibers are also available with metal coatings.
