Coherent FUD-4275 fibers are polarization-maintaining fibers designed for high-precision applications in the 1050–1600 nm wavelength range. These fibers feature high birefringence, low attenuation, and robust coatings for consistent performance in demanding environments.
| Parameter | FUD-4275 | 
|---|---|
| Optical Specifications | |
| Operating Wavelength | 1050–1600 nm | 
| Core NA | 0.15 | 
| Mode Field Diameter (Gaussian) | 8.5–10.5 µm @ 1060 nm | 
| Cutoff | 1000–1040 nm | 
| Birefringence | 0.00035 | 
| Geometrical & Mechanical Specifications | |
| Cladding Diameter | 124–126 µm | 
| Coating Diameter | 230–260 µm | 
| Prooftest Level | 100–120 kpsi |