Datasheet
Components & Accessories
LMA-GDF-20/130-M, Matched Passive Double Clad Optical Fiber
Coherent's passive series of Large Mode Area (LMA) double clad fibers are ideal for high-power monolithic fiber lasers and amplifiers. These passive fibers are based on a 20 µm diameter core and a 130 µm diameter cladding with a low NA (0.08) core. They are designed to work well with active Yb-doped 20/130 LMA fibers. These fibers utilize the latest fiber design and NuCOAT coating technology to ensure excellent preservation of beam quality and extended operational life at the high power levels demanded by today’s industrial fiber laser applications. These fibers are available in both non-PM and PANDA-style PM fibers.
Features
- Designed for compatibility with 20/130 active fibers
- NuCOAT fluoroacrylate coating - Greater fiber durability in extreme environmental operating & storage conditions
- Optimized LMA core design - Easy to maintain single mode LP01 beam through fiber & components at high power
- All fiber proof tested to > 100 kpsi - Critical for ensuring long-term reliability when coiling
- RoHS compliant
Applications
- Pulsed fiber lasers and amplifiers
- Material processing
- LIDAR
- Non-linear optics / frequency doubling
Datasheet
| Parameter | LMA-GDF-20/130-M |
|---|---|
| Optical Specifications | |
| Operating Wavelength | 1060 - 1600 nm |
| Core NA | 0.080 ± 0.005 |
| Core Attenuation | ≤ 40.0 dB/km @ 1300 nm |
| First Cladding NA | ≥ 0.46 |
| Cladding Attenuation | ≤ 15.0 dB/km @ 1095 nm |
| Geometrical & Mechanical Specifications | |
| Cladding Diameter | 130.0 ± 1.0 μm |
| Core Diameter | 20.0 ± 1.5 μm |
| Coating Diameter | 245.0 ± 10.0 μm |
| Coating Cencentricity | < 5.0 μm |
| Core Clad Offset | ≤ 0.70 μm |
| Coating Material | NuCOAT fluoroacrylate |
| Prooftest Level | ≥ 100 kpsi (0.7 GN/m²) |
| Clad Non-Circularity | ≤ 0.5 % |