Smart Product Number: LMA-GDF-30/250-M
30/250 Passive LMA Double Clad Fiber
Nufern'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 30 µm diameter core and 250 µm diameter clad size with a low NA (0.06) core and are designed to work well with the active Yb-doped 30/250 LMA fibers. These fibers utilize the latest fiber design and NuCOATFA coating technology to ensure excellent preservation of beam quality and extended operating 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.
Optical Specifications
Operating Wavelength
1060 – 1600 nm
Core NA
0.062 ± 0.005
First Cladding NA (5%) ≥ 0.46
Core Attenuation
≤ 45.0 dB/km @ 1300 nm
≤ 30.0 dB/km @ 1200 nmCladding Attenuation
≤ 15.0 dB/km @ 1095 nm
Geometrical & Mechanical Specifications
Cladding Diameter
247.0 ± 3.0 µm
Core Diameter
30.0 ± 2.0 µm
Coating Diameter
395.0 ± 15.0 µm
Core/Clad Offset
≤ 2.00 μm
Clad Non-Circularity
≤ 0.5 %
Prooftest Level
≥ 100 kpsi (0.7 GN/m²)
Comments
Coating Requirements: Low Index Polymer Coating
Designed to work with 30/250 LMA Yb-doped active fibers.
Features & Benefits
NuMATCH™ — Optimized compatibility with 30/250 active fibers
NuCOATFA 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
Typical Applications
Monolithic high power lasers & amplifiers
LMA fiber couplers & pump combiners
High power pump & signal pigtails
Military, industrial and medical
商品属性 [波长] 1060 - 1600 nm [掺杂类型] Ge [芯径大小] 30 µm [首包层直径] 247 µm [数值孔径] 0.062 [光学包层] Double