Non-Circular Core Fibers
SILICA/SILICA Non-Circular Core High OH (190-1200nm) and Low OH (300-2400nm) Fibers
Square or rectangular fibers, which deviate from the traditional circular shape, offer significant advantages by maximizing packing density. The fibers are ideally suited for connection to square detectors or light sources, e.g. for diode lasers. Their angular shape helps to homogenize the input power over short distances.
Thanks to the low-pressure plasma deposition technology used in preform production, we also have fibers available in rectangular formats with high aspect ratios and a low corner radius. These are ideal for applications which require a combination of flexibility and large cross sections in silica fibers, e.g. a diode laser delivery system.
Technical Data
| Type of fiber | High OH (190-1200nm) Fibers | Low OH (300-2400nm) Fibers |
| OH content | High >700 ppm | Low <1 ppm |
| Core diameter (µm) | Geometry and diameter upon request | |
| Numerical Aperture (NA) | 0.12±0.02 | 0.22±0.02 | 0.28±0.02 or customised | |
| Standard prooftest | Nylon, ETFE, Acrylate: 100 kpsi ; Polyimide: 70 kpsi | |
| Minimum Bending Radius | 50×cladding diameter (short-term mechanical stress) 150×core diameter (during use with high laser power) | |
Applications
First choice for applications for beam shaping e.g. including surface treatment or for lighting.