Datasheet
Components & Accessories
LMA-GDF-20/400-M, Large Mode Area Matched Passive Double Clad Fiber
Coherent Large Mode Area (LMA) passive double clad fibers are optimized for high power lasers and amplifiers in industrial, military, and medical applications. These fibers feature a 20 µm core diameter and a 400 µm cladding diameter with a low NA (0.065) core. Precision matched to their active Yb-doped counterparts, they ensure excellent splice compatibility and low loss. NuCOAT fluoroacrylate coating enhances durability, enabling extended operational life even under extreme conditions.
Features
- NuCOAT fluoroacrylate coating - Ensures durability in extreme environments
- LMA core design - Suitable for high CW powers
- “Few” moded core design - Maintains single mode LP01 beam
- Proof tested to > 100 kpsi - Long-term reliability
- RoHS compliant
Applications
- High power fiber lasers
- CW and pulsed amplifiers
- Military, industrial, and medical uses
Datasheet
| Parameter | LMA-GDF-20/400-M |
|---|---|
| Optical Specifications | |
| Operating Wavelength | 1015 - 1115 nm |
| Core NA | 0.065 ± 0.005 |
| Core Attenuation | ≤ 8.0 dB/km @ 1200 nm |
| First Cladding NA | ≥ 0.46 |
| Cladding Attenuation | ≤ 15.0 dB/km @ 1095 nm |
| Geometrical & Mechanical Specifications | |
| Cladding Diameter | 395.0 ± 5.0 μm |
| Core Diameter | 20.0 ± 1.5 μm |
| Coating Diameter | 550.0 ± 15.0 μm |
| Core Clad Offset | ≤ 2.00 μm |
| Coating Material | NuCOAT fluoroacrylate |
| Prooftest Level | ≥ 100 kpsi (0.7 GN/m²) |
| Clad Non-Circularity | ≤ 0.50 % |