Square-Core Energy-Homogenizing Fiber IR400×400670900
Square Core Homogeneous Energy Optical Fiber is specially designed for flat energy distribution. Unlike ordinary single-mode fiber (SMF), which concentrates energy centrally, square/approximately square cores distribute energy across the full core. Square or rectangular power-delivery cores match semiconductor-laser output modes and improve coupling. Fiber combiner assemblies combine N diode modules while preserving beam quality, with brightness ratios approaching 1. Modes fill square cores uniformly regardless of input position. Conventional round fibers may produce uneven superposition/loss; square cross-sections stack tightly and deliver efficiently, increasing power density/transmission efficiency for stable uniform combining. They also address mode matching: semiconductor outputs are generally Gaussian, described as mismatched to round-fiber output. Square cores capture/transmit this energy more effectively for improved conversion and beam quality. Spot homogenization ensures consistent processing. Where round fibers produce nonuniform spots, square structures distribute energy evenly and deliver stable uniform output. Uses include lasers, welding/cutting/marking, astronomy, night surveillance, and laser biological-evidence detectors. Manufacture is harder and costlier, so current applications/choices remain limited, though development may expand use. Distinctive transmission/energy characteristics are important wherever uniform illumination is needed. Overall, square-core fibers serve diverse fields and provide practical benefits.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Fiber Core | 400 μm × 400 μm |
| Cladding | 670 μm |
| Coating layer | 900 μm |
| Spectral Range | 400nm-2200nm |
| Numerical Aperture | 0.22 ± 0.02 |
| Concentricity Deviation ≤ | 30 um |
| Core Noncircularity ≤ | 2 % |
| Cladding Noncircularity ≤ | 2 % |
| Operating Temperature | –40 to +85 |
| Bend Radius [Long-term] | ≥140mm |
| Bend Radius [Short-term] | ≥70mm |
| Proof-test strength | 100 kpsi |
| Core Material | Low-OH Pure Silica Core |
| Cladding Material | Fluorine-Doped Silica Glass |
| Coating material | Acrylic resin |
| REACH report | Compliant with standards |
| RoHS report | Compliant with standards |
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Key Features
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