Smart Product Number: LMA-GDF-20/400-M
20/400 NuMATCH LMA Double Clad Fibers
Nufern's Large Mode Area (LMA) and Polarization Maintaining LMA (PLMA) passive double clad fiber are ideal for high power fiber lasers and amplifiers used in military, industrial, and medical applications. These fibers feature a 20 micron diameter core and 400 micron diameter clad size with a low NA (0.065) core. They are precision matched to their active Yb-doped 20/400 LMA and PLMA matched counterparts to ensure excellent splice compatability and low loss. As with all Nufern standard Large Mode Area (LMA) fibers, these fibers are proof-tested to 100 kpsi, an industry requirement for long term reliability. They 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 precision matched fibers are available in both non-PM and PANDA-style PM fibers.
Optical Specifications
Operating Wavelength
1060 – 1600 nm
Core NA
0.065 ± 0.005
First Cladding NA (5%) ≥ 0.46
Core Attenuation
≤ 12.0 dB/km @ 1300 nm
≤ 8.0 dB/km @ 1200 nmCladding 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
≤ 2.00μm
Clad Non-Circularity
≤ 0.50 %
Prooftest Level
≥ 100 kpsi (0.7 GN/m²)
Comments
Coating Requirements: Low index polymer coating.
Features & Benefits
NuCOATFA fluoroacrylate coating — Greater fiber durability in extreme environmental operating & storage conditions
LMA core design — Useful for transmitting high CW powers
“Few” moded core design — Easy to maintain single mode LP01 beam through fiber & components
PANDA-style stress structure for increased birefringence — Superior optical performance and uniformity
All fiber proof tested to > 100 kpsi — Critical for ensuring long term reliability when coiling
Typical Applications
High power fiber lasers
CW and pulsed amplifiers
Military, industrial and medical
商品属性 [波长] 1060 - 1600 nm [芯径大小] 20 µm [首包层直径] 395 µm [数值孔径] 0.065 [光学包层] Double [掺杂类型] Ge