Datasheet

Components & Accessories

LMA-GDF-25/400-M, Large Mode Area Matched Passive Double Clad Fiber

Product image of LMA-GDF-25/400-M, Large Mode Area Matched Passive Double Clad Fiber

Coherent Large Mode Area (LMA) matched passive double clad fibers are engineered for high-power laser systems. Featuring a 25 µm core diameter and a 400 µm cladding diameter, the M version ensures low splice loss and exceptional beam quality. The NuCOAT fluoroacrylate coating provides superior environmental durability, making these fibers an excellent choice for industrial, medical, and defense applications.

Features

  • NuCOAT fluoroacrylate coating - Provides superior environmental durability
  • Precision matched (M) design - Reduces splice loss
  • 25 µm core and 400 µm cladding - Optimized for high power applications
  • Proof tested to > 100 kpsi - Guarantees long-term reliability
  • RoHS compliant

Applications

  • High power fiber lasers
  • Material processing
  • Medical and defense systems
Parameter LMA-GDF-25/400-M
Optical Specifications
Operating Wavelength 1060 - 1600 nm
Core NA 0.065 ± 0.005
Core Attenuation ≤ 15.0 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 25.0 ± 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 ≤ 0.5 %